Engine light won’t go away after replacing DPfE sensor

[ScarzRanger21(2.0)]

Driven it 4 times since replacing the DPFE sensor last Friday. It’s running much smoother so I’m pretty confident that fixed the problem. Only issue now is I can’t get the CEL to clear… The first drive I took, I expected it to be on because I drove the truck with the sensor unplugged to diagnose whether it was really the DPFE that was the culprit. It ran way better with the sensor unplugged, so I went ahead and replaced it.

I did a reset (unplugged battery for 20 mins) and cleared the engine light when I got home and thought everything was good. The second time I drove it, CEL came back and hasn’t cleared since. My ford app is saying a fault is detected with one of the engine emission sensors. I figured the truck just needed to recognize the new sensor and adjust but I’ve driven it 150 miles since replacing and CEL hasn’t cleared. Thoughts?

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[RangerBill]

Driven it 4 times since replacing the DPFE sensor last Friday. It’s running much smoother so I’m pretty confident that fixed the problem. Only issue now is I can’t get the CEL to clear… The first drive I took, I expected it to be on because I drove the truck with the sensor unplugged to diagnose whether it was really the DPFE that was the culprit. It ran way better with the sensor unplugged, so I went ahead and replaced it.

I did a reset (unplugged battery for 20 mins) and cleared the engine light when I got home and thought everything was good. The second time I drove it, CEL came back and hasn’t cleared since. My ford app is saying a fault is detected with one of the engine emission sensors. I figured the truck just needed to recognize the new sensor and adjust but I’ve driven it 150 miles since replacing and CEL hasn’t cleared. Thoughts?

Was the light on before replacing the sensor?
What is the DTC code that you are now getting? You need the code to trouble shoot.

 

[airline tech]

If I am reading this correctly - Battery Disconnect Only Reset?
You generated a Hard Code with the disconnect - you will need to clear with a scan tool and or let it complete a few drive cycle tests or manually run the drive cycle test.

 

[jmelair]

you can take it to a nationwide auto parts store and ask them to give you the codes (most won't reset the light, though). I'm in Pennsylvania, and part of the annual inspection is to check the computer for codes, and if the light was recently cleared, it will show that the computer isn't showing an "all clear" yet and the vehicle will fail the emission part of the inspection. the computer needs to re-learn the sensors and determine if everything is in check. take your better half on a road trip somewhere (go see the countryside) and see if the light goes out by itself.

 

[ScarzRanger21(2.0)]

The “reset” I did was just disconnecting the battery. I haven’t tried to clear any codes with my scanner, I’ll do that when I get home from work later. I was hoping it would clear itself once it recognizes the new DPFE sensor.

I drive 60 miles a day for work, about a 45 minute commute each way. I’ve put about 500 miles on the new sensor already. I would think if it’s going to clear itself, it would’ve already done so.

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