Intermittent errors with Blind Spot Monitor

[RedlandRanger]

This started a couple of days ago and has persisted. It is intermittent but continues to happen and is getting very annoying. What happens is I get an error on the dash for "Blind Spot System Fault" followed almost immediately by a "Cross Traffic System Fault". It will stay there for a bit and then clear itself after a while. And then the cycle repeats. It is not completely regular - meaning it doesn't happen every 30 seconds or every minute or any consistent length of time - but it is consistent enough to occur quite a bit. I just got back from an hour drive and it probably happened 20-30 times during the drive.

A couple of other weird/interesting things happen when this occurs. I have the "cold weather monitor" (snowflake) turned on in Forscan and when this occurs, the snowflake usually appears. Sometimes the temperature readout on the screen will disappear, sometimes not - but the snowflake almost always appears. I've also seen the airbag light come on sometimes when it happens, but that does not happen very often.

I took the taillights out just to see if something had happened to a connection or something - both looked fine other than a lot of dust (I drive a lot of dusty forest service roads)- no damage to the wires - I'm guessing that there may be some mouse damage somewhere - I had a mouse in the truck a while back.

Any ideas for what to look for would be appreciated before I take it somewhere to have it looked at. This is kind of a weird one.....

Also - until I can get this fixed is there a way to turn this off? I haven't seen a setting that turns off blind spot monitoring or cross traffic alerts.

Sponsored

 

[RangerBill]

This started a couple of days ago and has persisted. It is intermittent but continues to happen and is getting very annoying. What happens is I get an error on the dash for "Blind Spot System Fault" followed almost immediately by a "Cross Traffic System Fault". It will stay there for a bit and then clear itself after a while. And then the cycle repeats. It is not completely regular - meaning it doesn't happen every 30 seconds or every minute or any consistent length of time - but it is consistent enough to occur quite a bit. I just got back from an hour drive and it probably happened 20-30 times during the drive.

A couple of other weird/interesting things happen when this occurs. I have the "cold weather monitor" (snowflake) turned on in Forscan and when this occurs, the snowflake usually appears. Sometimes the temperature readout on the screen will disappear, sometimes not - but the snowflake almost always appears. I've also seen the airbag light come on sometimes when it happens, but that does not happen very often.

I took the taillights out just to see if something had happened to a connection or something - both looked fine other than a lot of dust (I drive a lot of dusty forest service roads)- no damage to the wires - I'm guessing that there may be some mouse damage somewhere - I had a mouse in the truck a while back.

Any ideas for what to look for would be appreciated before I take it somewhere to have it looked at. This is kind of a weird one.....

Also - until I can get this fixed is there a way to turn this off? I haven't seen a setting that turns off blind spot monitoring or cross traffic alerts.

Have you read the DTC codes using Forscan? Knowing any codes will help narrow the problem down.

 

[RedlandRanger]

Have you read the DTC codes using Forscan? Knowing any codes will help narrow the problem down.

One other symptom I noticed is that when these errors are displaying the turn signals flash fast - when they are gone they work normally.

Yikes! There are a lot of them - I know the U0422 is nothing to be worried about - that is due to a change in the tire size to fix the speedo - but some of the others look very concerning:
===PCM DTC U0164:00-68===
Code: U0164 - Lost Communication With HVAC Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Powertrain Control Module

===END PCM DTC U0164:00-68===

===PCM DTC U0422:00-2F===
Code: U0422 - Invalid Data Received From Body Control Module

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

===END PCM DTC U0422:00-2F===

===OBDII DTC None===
Successful DTC reading, no error codes found

Module: On Board Diagnostic II

===END OBDII DTC None===

===APIM DTC U0232:00-08===
Code: U0232 - Lost Communication With Side Obstacle Detection Control Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0232:00-08===

===APIM DTC U0233:00-08===
Code: U0233 - Lost Communication With Side Obstacle Detection Control Module B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0233:00-08===

===APIM DTC U0256:00-08===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0256:00-08===

===PAM DTC U0256:00-28===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Parking Aid Module

===END PAM DTC U0256:00-28===

===PAM DTC U0557:00-28===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Parking Aid Module

===END PAM DTC U0557:00-28===

===PAM DTC U0252:00-28===
Code: U0252 - Lost Communication With Lighting Control Module- Rear B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Parking Aid Module

===END PAM DTC U0252:00-28===

===BdyCM DTC B124D:02-C8===
Code: B124D - Tire Pressure Sensor

Additional Fault Symptom:
- General Signal Failure

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC
- Test not complete

Module: Body Control Module

===END BdyCM DTC B124D:02-C8===

===BdyCM DTC B1115:15-48===
Code: B1115 - High Mounted Stop Lamp Control, Incorrect Current Consumption, Suspect Incorrect Bulb Fitted

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Body Control Module

===END BdyCM DTC B1115:15-48===

===BdyCM DTC U0256:87-08===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Additional Fault Symptom:
- Missing Message

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC U0256:87-08===

===BdyCM DTC U0252:87-08===
Code: U0252 - Lost Communication With Lighting Control Module- Rear B

Additional Fault Symptom:
- Missing Message

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC U0252:87-08===

===SODR DTC U0146:00-28===
Code: U0146 - Lost Communication With Serial Data Gateway A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Right

===END SODR DTC U0146:00-28===

===SODR DTC U0100:00-28===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Right

===END SODR DTC U0100:00-28===

===SODR DTC U0101:00-28===
Code: U0101 - Lost Communication with TCM

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Right

===END SODR DTC U0101:00-28===

===SODL DTC U0146:00-28===
Code: U0146 - Lost Communication With Serial Data Gateway A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Left

===END SODL DTC U0146:00-28===

===SODL DTC U0100:00-28===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Left

===END SODL DTC U0100:00-28===

===SODL DTC U0101:00-28===
Code: U0101 - Lost Communication with TCM

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Left

===END SODL DTC U0101:00-28===

===FCIM DTC B11F0:15-08===
Code: B11F0 - Air Intake Damper Position Sensor

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Front Controls Interface Module

===END FCIM DTC B11F0:15-08===

===FCIM DTC U0140:00-48===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0140:00-48===

===FCIM DTC U0151:00-48===
Code: U0151 - Lost Communication With Restraints Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0151:00-48===

===FCIM DTC U0155:00-48===
Code: U0155 - Lost Communication With Instrument Panel Cluster (IPC) Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0155:00-48===

===FCIM DTC U0253:00-48===
Code: U0253 - Lost Communication With Accessory Protocol Interface Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0253:00-48===

===FCIM DTC U0452:82-48===
Code: U0452 - Invalid Data Received From Restraints Control Module

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0452:82-48===

===TRM DTC U0140:00-28===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Trailer Module

===END TRM DTC U0140:00-28===

===ABS DTC None===
Successful DTC reading, no error codes found

Module: Antilock braking system

===END ABS DTC None===

===TCU DTC None===
Successful DTC reading, no error codes found

Module: Telematic Control Unit Module

===END TCU DTC None===

===RTM DTC None===
Successful DTC reading, no error codes found

Module: Radio Transceiver Module

===END RTM DTC None===

===RCM DTC B00A0:68-08===
Code: B00A0 - Occupant Classification System

Additional Fault Symptom:
- Event Information

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC B00A0:68-08===

===RCM DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0100:00-08===

===RCM DTC U0112:00-08===
Code: U0112 - Lost Communication With Battery Energy Control Module B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0112:00-08===

===RCM DTC U0140:00-08===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0140:00-08===

===RCM DTC U0253:00-08===
Code: U0253 - Lost Communication With Accessory Protocol Interface Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0253:00-08===

===RCM DTC U0557:82-08===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-EVENT_TIME: -198345803 s (Wed Jul 15 16:19:10 2026) - Event time
-TOTAL_DISTANCE: 118494 km - Total Distance

Freeze Frame #2:
-EVENT_TIME: -198178412 s (Fri Jul 17 14:49:01 2026) - Event time
-TOTAL_DISTANCE: 118774 km - Total Distance
===END RCM DTC U0557:82-08===

===PSCM DTC None===
Successful DTC reading, no error codes found

Module: Power Steering Control Module

===END PSCM DTC None===

===SCCM DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC U0100:00-08===

===SCCM DTC U0140:00-08===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC U0140:00-08===

===SCCM DTC U0146:00-08===
Code: U0146 - Lost Communication With Serial Data Gateway A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC U0146:00-08===

===IPC DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0100:00-08===

===IPC DTC U0232:00-08===
Code: U0232 - Lost Communication With Side Obstacle Detection Control Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0232:00-08===

===IPC DTC U0233:00-08===
Code: U0233 - Lost Communication With Side Obstacle Detection Control Module B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0233:00-08===

===IPC DTC U0256:00-08===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0256:00-08===

===IPC DTC U0401:00-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0401:00-08===

===IPC DTC U0401:82-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0401:82-08===

===IPC DTC U0557:81-08===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Additional Fault Symptom:
- Invalid Serial Data Received

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0557:81-08===

===IPC DTC U0557:82-08===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0557:82-08===

===GWM DTC None===
Successful DTC reading, no error codes found

Module: Gateway Module A

===END GWM DTC None===

===IPMA DTC U0100:00-28===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 27 °C - ECU Internal Temperature
===END IPMA DTC U0100:00-28===

===IPMA DTC U0101:00-28===
Code: U0101 - Lost Communication with TCM

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0101:00-28===

===IPMA DTC U0140:00-28===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0140:00-28===

===IPMA DTC U0418:86-28===
Code: U0418 - Invalid Data Received from Brake System Control Module A

Additional Fault Symptom:
- Signal Invalid

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 27 °C - ECU Internal Temperature
===END IPMA DTC U0418:86-28===

===IPMA DTC U0422:82-28===
Code: U0422 - Invalid Data Received From Body Control Module

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.8 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0422:82-28===

===IPMA DTC U0429:86-28===
Code: U0429 - Invalid Data Received From Steering Column Control Module

Additional Fault Symptom:
- Signal Invalid

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0429:86-28===

 

[RangerBill]

This started a couple of days ago and has persisted. It is intermittent but continues to happen and is getting very annoying. What happens is I get an error on the dash for "Blind Spot System Fault" followed almost immediately by a "Cross Traffic System Fault". It will stay there for a bit and then clear itself after a while. And then the cycle repeats. It is not completely regular - meaning it doesn't happen every 30 seconds or every minute or any consistent length of time - but it is consistent enough to occur quite a bit. I just got back from an hour drive and it probably happened 20-30 times during the drive.

A couple of other weird/interesting things happen when this occurs. I have the "cold weather monitor" (snowflake) turned on in Forscan and when this occurs, the snowflake usually appears. Sometimes the temperature readout on the screen will disappear, sometimes not - but the snowflake almost always appears. I've also seen the airbag light come on sometimes when it happens, but that does not happen very often.

I took the taillights out just to see if something had happened to a connection or something - both looked fine other than a lot of dust (I drive a lot of dusty forest service roads)- no damage to the wires - I'm guessing that there may be some mouse damage somewhere - I had a mouse in the truck a while back.

Any ideas for what to look for would be appreciated before I take it somewhere to have it looked at. This is kind of a weird one.....

Also - until I can get this fixed is there a way to turn this off? I haven't seen a setting that turns off blind spot monitoring or cross traffic alerts.

Look in the menus under Driver Assist to turn BLISS and Cross Traffic off.

 

[RangerBill]

One other symptom I noticed is that when these errors are displaying the turn signals flash fast - when they are gone they work normally.

Yikes! There are a lot of them - I know the U0422 is nothing to be worried about - that is due to a change in the tire size to fix the speedo - but some of the others look very concerning:
===PCM DTC U0164:00-68===
Code: U0164 - Lost Communication With HVAC Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Powertrain Control Module

===END PCM DTC U0164:00-68===

===PCM DTC U0422:00-2F===
Code: U0422 - Invalid Data Received From Body Control Module

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

===END PCM DTC U0422:00-2F===

===OBDII DTC None===
Successful DTC reading, no error codes found

Module: On Board Diagnostic II

===END OBDII DTC None===

===APIM DTC U0232:00-08===
Code: U0232 - Lost Communication With Side Obstacle Detection Control Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0232:00-08===

===APIM DTC U0233:00-08===
Code: U0233 - Lost Communication With Side Obstacle Detection Control Module B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0233:00-08===

===APIM DTC U0256:00-08===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Accessory Protocol Interface Module

===END APIM DTC U0256:00-08===

===PAM DTC U0256:00-28===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Parking Aid Module

===END PAM DTC U0256:00-28===

===PAM DTC U0557:00-28===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Parking Aid Module

===END PAM DTC U0557:00-28===

===PAM DTC U0252:00-28===
Code: U0252 - Lost Communication With Lighting Control Module- Rear B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Parking Aid Module

===END PAM DTC U0252:00-28===

===BdyCM DTC B124D:02-C8===
Code: B124D - Tire Pressure Sensor

Additional Fault Symptom:
- General Signal Failure

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC
- Test not complete

Module: Body Control Module

===END BdyCM DTC B124D:02-C8===

===BdyCM DTC B1115:15-48===
Code: B1115 - High Mounted Stop Lamp Control, Incorrect Current Consumption, Suspect Incorrect Bulb Fitted

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Body Control Module

===END BdyCM DTC B1115:15-48===

===BdyCM DTC U0256:87-08===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Additional Fault Symptom:
- Missing Message

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC U0256:87-08===

===BdyCM DTC U0252:87-08===
Code: U0252 - Lost Communication With Lighting Control Module- Rear B

Additional Fault Symptom:
- Missing Message

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC U0252:87-08===

===SODR DTC U0146:00-28===
Code: U0146 - Lost Communication With Serial Data Gateway A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Right

===END SODR DTC U0146:00-28===

===SODR DTC U0100:00-28===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Right

===END SODR DTC U0100:00-28===

===SODR DTC U0101:00-28===
Code: U0101 - Lost Communication with TCM

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Right

===END SODR DTC U0101:00-28===

===SODL DTC U0146:00-28===
Code: U0146 - Lost Communication With Serial Data Gateway A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Left

===END SODL DTC U0146:00-28===

===SODL DTC U0100:00-28===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Left

===END SODL DTC U0100:00-28===

===SODL DTC U0101:00-28===
Code: U0101 - Lost Communication with TCM

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Side Obstacle Detection Control Module - Left

===END SODL DTC U0101:00-28===

===FCIM DTC B11F0:15-08===
Code: B11F0 - Air Intake Damper Position Sensor

Additional Fault Symptom:
- Circuit Short To Battery Or Open

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Front Controls Interface Module

===END FCIM DTC B11F0:15-08===

===FCIM DTC U0140:00-48===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0140:00-48===

===FCIM DTC U0151:00-48===
Code: U0151 - Lost Communication With Restraints Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0151:00-48===

===FCIM DTC U0155:00-48===
Code: U0155 - Lost Communication With Instrument Panel Cluster (IPC) Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0155:00-48===

===FCIM DTC U0253:00-48===
Code: U0253 - Lost Communication With Accessory Protocol Interface Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0253:00-48===

===FCIM DTC U0452:82-48===
Code: U0452 - Invalid Data Received From Restraints Control Module

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Front Controls Interface Module

===END FCIM DTC U0452:82-48===

===TRM DTC U0140:00-28===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Trailer Module

===END TRM DTC U0140:00-28===

===ABS DTC None===
Successful DTC reading, no error codes found

Module: Antilock braking system

===END ABS DTC None===

===TCU DTC None===
Successful DTC reading, no error codes found

Module: Telematic Control Unit Module

===END TCU DTC None===

===RTM DTC None===
Successful DTC reading, no error codes found

Module: Radio Transceiver Module

===END RTM DTC None===

===RCM DTC B00A0:68-08===
Code: B00A0 - Occupant Classification System

Additional Fault Symptom:
- Event Information

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC B00A0:68-08===

===RCM DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0100:00-08===

===RCM DTC U0112:00-08===
Code: U0112 - Lost Communication With Battery Energy Control Module B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0112:00-08===

===RCM DTC U0140:00-08===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0140:00-08===

===RCM DTC U0253:00-08===
Code: U0253 - Lost Communication With Accessory Protocol Interface Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-TOTAL_DISTANCE: 115256 km - Total Distance

Freeze Frame #2:
-TOTAL_DISTANCE: 116913 km - Total Distance
===END RCM DTC U0253:00-08===

===RCM DTC U0557:82-08===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module

Freeze Frame #1:
-EVENT_TIME: -198345803 s (Wed Jul 15 16:19:10 2026) - Event time
-TOTAL_DISTANCE: 118494 km - Total Distance

Freeze Frame #2:
-EVENT_TIME: -198178412 s (Fri Jul 17 14:49:01 2026) - Event time
-TOTAL_DISTANCE: 118774 km - Total Distance
===END RCM DTC U0557:82-08===

===PSCM DTC None===
Successful DTC reading, no error codes found

Module: Power Steering Control Module

===END PSCM DTC None===

===SCCM DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC U0100:00-08===

===SCCM DTC U0140:00-08===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC U0140:00-08===

===SCCM DTC U0146:00-08===
Code: U0146 - Lost Communication With Serial Data Gateway A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Steering Column Control Module

===END SCCM DTC U0146:00-08===

===IPC DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0100:00-08===

===IPC DTC U0232:00-08===
Code: U0232 - Lost Communication With Side Obstacle Detection Control Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0232:00-08===

===IPC DTC U0233:00-08===
Code: U0233 - Lost Communication With Side Obstacle Detection Control Module B

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0233:00-08===

===IPC DTC U0256:00-08===
Code: U0256 - Lost Communication With Front Controls Interface Module A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0256:00-08===

===IPC DTC U0401:00-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0401:00-08===

===IPC DTC U0401:82-08===
Code: U0401 - Invalid Data Received from ECM/PCM A

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0401:82-08===

===IPC DTC U0557:81-08===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Additional Fault Symptom:
- Invalid Serial Data Received

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0557:81-08===

===IPC DTC U0557:82-08===
Code: U0557 - Invalid Data Received From Front Controls Interface Module A

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Instrument Panel Control Module

===END IPC DTC U0557:82-08===

===GWM DTC None===
Successful DTC reading, no error codes found

Module: Gateway Module A

===END GWM DTC None===

===IPMA DTC U0100:00-28===
Code: U0100 - Lost Communication With ECM/PCM A

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 27 °C - ECU Internal Temperature
===END IPMA DTC U0100:00-28===

===IPMA DTC U0101:00-28===
Code: U0101 - Lost Communication with TCM

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0101:00-28===

===IPMA DTC U0140:00-28===
Code: U0140 - Lost Communication With Body Control Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0140:00-28===

===IPMA DTC U0418:86-28===
Code: U0418 - Invalid Data Received from Brake System Control Module A

Additional Fault Symptom:
- Signal Invalid

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 27 °C - ECU Internal Temperature
===END IPMA DTC U0418:86-28===

===IPMA DTC U0422:82-28===
Code: U0422 - Invalid Data Received From Body Control Module

Additional Fault Symptom:
- Alive/Sequence Counter Incorrect/Not Updated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.8 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0422:82-28===

===IPMA DTC U0429:86-28===
Code: U0429 - Invalid Data Received From Steering Column Control Module

Additional Fault Symptom:
- Signal Invalid

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame #1:
-EVENT_TIME: -200686557 s (Thu Jun 18 14:06:35 2026) - Event time
-TOTAL_DISTANCE: 115256 km - Total Distance
-MODULE_VOLTAGE: 12.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 22 °C - Outside temperature
-ECU_POWER_SUPPLY: 11.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 28 °C - ECU Internal Temperature
===END IPMA DTC U0429:86-28===

Have you checked for water/moisture in either taillight and its corresponding BLIS module? You might want to remove each BLIS module from the taillights and check for corrosion on the module and in its connector. Many of your DTCs are communications related and a corroded BLIS module or wiring can cause problems with the communications buses.

 

[RedlandRanger]

I took one of the BLIS modules out (the drivers side) and it was VERY clean - the connector to the taillight was very dusty but the BLIS module connector looked great - I did not remove the connector though.

 

[RangerBill]

You could also try unplugging both taillights and clear all the codes. Then rescan to see what codes come back.

 

[RangerBill]

I took one of the BLIS modules out (the drivers side) and it was VERY clean - the connector to the taillight was very dusty but the BLIS module connector looked great - I did not remove the connector though.

You need to look at both taillights and their BLISS modules.

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