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P0172 Diagnostic Trouble Code Discussion for August 2007

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
1999 Toyota 4Runner Limited 3.4L Hesitation, MIL Lamp on VIN: JT3HN87R9X
P0172: Fuel System Too Rich (Bank 1). I have two of these [...] doing just about the same thing. This one keeps throwing po172. I have replace b1s1 a/f sensor reading are about .64 at cruising speed. I have cleaned the maf and my ltft has come down to -21.9 from -35. I am not really sure on how th...
August 07, 2007
2002 Ford Explorer XLS 4.0L Misfire, MIL Lamp on VIN: 1FMZU72K22
P0172: Bank rich. This truck missfires especially under hard load. It will at times miss at light cruise. The long term fuel trim for both banks is -25%. STFT is -8 to -12%. Both front o2 sensors seem to be switching fine. The truck was origianlly brought in for trans shifting ...
August 30, 2007
1999 Toyota 4Runner Limited 3.4L Hesitation, MIL Lamp on VIN: JT3HN87R9X
P0172: Fuel System Too Rich (Bank 1). I have two of these [...] doing just about the same thing. This one keeps throwing po172. I have replace b1s1 a/f sensor reading are about .64 at cruising speed. I have cleaned the maf and my ltft has come down to -21.9 from -35. I am not really sure on how th...
August 07, 2007
2002 Ford Explorer XLS 4.0L Misfire, MIL Lamp on VIN: 1FMZU72K22
P0172: Bank rich. This truck missfires especially under hard load. It will at times miss at light cruise. The long term fuel trim for both banks is -25%. STFT is -8 to -12%. Both front o2 sensors seem to be switching fine. The truck was origianlly brought in for trans shifting ...
August 30, 2007