Code 327: Low Voltage to DPFE
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Code 327: Low Voltage to DPFE
I have a 95 Ford Explorer with the CHECK ENGINE kight on for the past year. I've slowly been replacing parts to resolve this problem, but had no success. I replaced the catalytic convertor, the two O2 sensors, the PFE and the DPFE. The vacuum lines are all ok. The codes have been cleared and rechecked. I'm still getting a 327 code and my help indicates low voltage to the DPFE.
The voltage to the DPFE ranges from 0.01-0.02. I can't find anywhere that tells me what the PROPER voltage is, nor can I find out what's causing the problem. ANY help is greatly appreciated.
The voltage to the DPFE ranges from 0.01-0.02. I can't find anywhere that tells me what the PROPER voltage is, nor can I find out what's causing the problem. ANY help is greatly appreciated.
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From: UT
I don't remember the specific answer (I want to say Vref which is approximately 4-5 V), but if you search this forum (set the time setting back so it will search last summer) for a file called "gtest.pdf", you'll find a complete EEC-IV diagnostic article, including circuit tests for a code 327 that will tell you what the voltage should be.
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MrShorty, Thanks. I found the file and it will definitely be helpful.
Unfortunately for me, one of the tests it specifies (using a jumper wire to check the circuit) was performed about 6 months ago and fried my computer. I replaced the computer and I'm hesitating on trying it again. I'll have to try all other avenues first. Thanks again.
Unfortunately for me, one of the tests it specifies (using a jumper wire to check the circuit) was performed about 6 months ago and fried my computer. I replaced the computer and I'm hesitating on trying it again. I'll have to try all other avenues first. Thanks again.
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Originally Posted by mrshorty
I don't remember the specific answer (I want to say Vref which is approximately 4-5 V), but if you search this forum (set the time setting back so it will search last summer) for a file called "gtest.pdf", you'll find a complete EEC-IV diagnostic article, including circuit tests for a code 327 that will tell you what the voltage should be.
Thanks
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The search feature is down while they get a new server installed. Use Google searches instead for now. That's how I found this link:
http://www.carsoft.ru/avtorepair/gtest.pdf
Good luck!
http://www.carsoft.ru/avtorepair/gtest.pdf
Good luck!
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