P139C Code

[RangerBill]

I get the code off and on. While I was doing that previous test, the code light was off. I drove around for 15 minutes and the code came back on. I have to use my laptop with FORScan to monitor the data. I did notice while moving but without my foot on the gas, it was almost always around -0.80 psi.

DPFE_UR showed "no fault" even when the code light was on.

Also, it is running rough and "studdering".

Mark

Replace the DPFE sensor and see if that fixes it.

Sponsored

 

[airline tech]

yes - replace the sensor and then follow up with Live Data again to ensure readings come back to normal range if they do not - then the issue is within the EGR Tube Assembly or electrically (wiring) we can isolate that if the sensor does not bring it back to normal readings but since at KOEO the voltage is very near (new) normal - electrically it appears fine and the issue is withing the (pressure reading) capabilities

 

[emesel]

I hope to receive and replace the sensor tomorrow. But, is there a way to check if the orifice is clear? What about blowing compressed air in high or low pressure port and checking other port for flow?

 

[airline tech]

I hope to receive and replace the sensor tomorrow. But, is there a way to check if the orifice is clear? What about blowing compressed air in high or low pressure port and checking other port for flow?

The high pressure side - only as to check the orifice the tube must be removed, the only thing that you can do is disconnect both hoses and then koeo and note did the readings change

 

[emesel]

The high pressure side - only as to check the orifice the tube must be removed, the only thing that you can do is disconnect both hoses and then koeo and note did the readings change

I imagine it would have to be totally blocked for the readings to change when houses removed.

Sponsored