DPFE voltage too low
Thread Starter
Joined: Nov 2011
Posts: 4
From: Missouri
DPFE voltage too low
I'm troubleshooting the following codes on my 2000 Mustang V6:
P0401-EGR flow insufficient
P0301-Cyl #1 misfire
P0174-System too lean
My voltage measurement from the signal wire on the DPFE is significantly low compared to what I've gathered from multiple sources at only 0.21-0.28V at idle. I've verified my EGR valve is operational by supplying vaccuum to it which made it run rough as expected. I have also made sure all passageways are clear. One post I read said to monitor the dpfe signal voltage as I applied vaccuum to the ports on the sensor itself and showed no change in signal voltage. This leads me to believe my dpfe is in fact bad. Am I missing something?
P0401-EGR flow insufficient
P0301-Cyl #1 misfire
P0174-System too lean
My voltage measurement from the signal wire on the DPFE is significantly low compared to what I've gathered from multiple sources at only 0.21-0.28V at idle. I've verified my EGR valve is operational by supplying vaccuum to it which made it run rough as expected. I have also made sure all passageways are clear. One post I read said to monitor the dpfe signal voltage as I applied vaccuum to the ports on the sensor itself and showed no change in signal voltage. This leads me to believe my dpfe is in fact bad. Am I missing something?
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