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P0172 Diagnostic Trouble Code Discussion for January 2006

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2001 Mercury Sable LS Premium 3.0L MIL Lamp on VIN: 1MEHM55SX1
P0172: Rich bank one. ... think it is the fuel pressure regulator. Only problem is the fuel pressure spec is 35 to 65 psi. I might buy that if this car had a variable speed pump. But it doesn't. (I'm sure, there isn't a fuel line pressure sensor on the rail, no pid for fuel pressur...
January 05, 2006
1999 Honda Accord EX 2.3L Cuts out
P0172: Fuel System Too Rich (Bank 1). ... light, dtc p0172 (rich condition) I do not have a fuel pressure adaptor for this vehicle so i am unable to test the fuel pressure, but I did find the upstream oxygen sensor not working properly so I replaced it, also due to customer request replaced plugs,...
January 09, 2006
1999 Honda Accord EX 2.3L Cuts out
P0172: Fuel System Too Rich (Bank 1). ... light, dtc p0172 (rich condition) I do not have a fuel pressure adaptor for this vehicle so i am unable to test the fuel pressure, but I did find the upstream oxygen sensor not working properly so I replaced it, also due to customer request replaced plugs,...
January 10, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 15, 2006
2004 Ford E-250 5.4L MIL Lamp on
P0172: bank1 rich. hello group, sorry about no vin, this pretains to a fleet of 2004 e-250 vans with a mil with always the same codes on on every model. fuel trim short and long term look ok, fuel pressure is ok, no vac leaks found. vans run good just mil on. i tried a maf on on...
January 15, 2006
1996 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GNDT13W8T
P0172: Fuel System Rich (Bank 1). I am not sure where to go next on this one. It has a rough idle and doesn't seem to have full power when driving. It has 3 DTC's, the freeze frame was: FSS O2O2, CLV 5.1%, ECT 205deg, STFT1 -5.5%, LTFT1 -18%, STFT2 -7%, LTFT2 -18%, MAP 11.81in, RPM 1189, VS 24...
January 17, 2006
1996 Plymouth Neon 2.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1P3ES22CXT
P0172: Fuel System Rich (Bank 1). ... OBDII emissions due to a lit MIL. It came in with a P0300 random misfire code which I initially blamed on the "4 prong" Bosch platinum plugs that the customer installed. I threw a set of OE plugs in it, cleared the code and drove. It ran very rough...
January 17, 2006
1997 GMC K2500 Sierra SL 5.7L MIL Lamp on VIN: 1TGEK19R4W
P0172: Fuel Trim System Rich (Bank 1). Have installed lpg system .Drives good for a week or so with service engine soon light on until it gets enough codes and then goes into limp mode.Have fitted emulators to o2 sensors. I have tried everything i can think of to stop this occuring. It is only when...
January 25, 2006
1997 GMC K2500 Sierra SL 5.7L MIL Lamp on VIN: 1TGEK19R4W
P0172: Fuel Trim System Rich (Bank 1). Have installed lpg system .Drives good for a week or so with service engine soon light on until it gets enough codes and then goes into limp mode.Have fitted emulators to o2 sensors. I have tried everything i can think of to stop this occuring. It is only when...
January 30, 2006
2000 Ford Taurus SE 4-Valve 3.0L MIL Lamp on VIN: 1FAFP56S1Y
P0172: rich bank 1. freeze frame showed trim pegged rich, and was still close to that when it came in. I opened the breather and all of a sudden short term went the other way. Filter was dirty, but it did not go back to rich when reassembled. Maybe I knocked some trash off the MA...
January 31, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 31, 2006
2001 Mercury Sable LS Premium 3.0L MIL Lamp on VIN: 1MEHM55SX1
P0172: Rich bank one. ... think it is the fuel pressure regulator. Only problem is the fuel pressure spec is 35 to 65 psi. I might buy that if this car had a variable speed pump. But it doesnít. (Iím sure, there isnít a fuel line pressure sensor on the rail, no pid for fuel pressur...
January 05, 2006
1999 Honda Accord EX 2.3L Cuts out
P0172: Fuel System Too Rich (Bank 1). ... light, dtc p0172 (rich condition) I do not have a fuel pressure adaptor for this vehicle so i am unable to test the fuel pressure, but I did find the upstream oxygen sensor not working properly so I replaced it, also due to customer request replaced plugs,...
January 09, 2006
1999 Honda Accord EX 2.3L Cuts out
P0172: Fuel System Too Rich (Bank 1). ... light, dtc p0172 (rich condition) I do not have a fuel pressure adaptor for this vehicle so i am unable to test the fuel pressure, but I did find the upstream oxygen sensor not working properly so I replaced it, also due to customer request replaced plugs,...
January 10, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 15, 2006
2004 Ford E-250 5.4L MIL Lamp on
P0172: bank1 rich. hello group, sorry about no vin, this pretains to a fleet of 2004 e-250 vans with a mil with always the same codes on on every model. fuel trim short and long term look ok, fuel pressure is ok, no vac leaks found. vans run good just mil on. i tried a maf on on...
January 15, 2006
1996 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GNDT13W8T
P0172: Fuel System Rich (Bank 1). I am not sure where to go next on this one. It has a rough idle and doesn't seem to have full power when driving. It has 3 DTC's, the freeze frame was: FSS O2O2, CLV 5.1%, ECT 205deg, STFT1 -5.5%, LTFT1 -18%, STFT2 -7%, LTFT2 -18%, MAP 11.81in, RPM 1189, VS 24...
January 17, 2006
1996 Plymouth Neon 2.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1P3ES22CXT
P0172: Fuel System Rich (Bank 1). ... OBDII emissions due to a lit MIL. It came in with a P0300 random misfire code which I initially blamed on the "4 prong" Bosch platinum plugs that the customer installed. I threw a set of OE plugs in it, cleared the code and drove. It ran very rough...
January 17, 2006
1997 GMC K2500 Sierra SL 5.7L MIL Lamp on VIN: 1TGEK19R4W
P0172: Fuel Trim System Rich (Bank 1). Have installed lpg system .Drives good for a week or so with service engine soon light on until it gets enough codes and then goes into limp mode.Have fitted emulators to o2 sensors. I have tried everything i can think of to stop this occuring. It is only when...
January 25, 2006
1997 GMC K2500 Sierra SL 5.7L MIL Lamp on VIN: 1TGEK19R4W
P0172: Fuel Trim System Rich (Bank 1). Have installed lpg system .Drives good for a week or so with service engine soon light on until it gets enough codes and then goes into limp mode.Have fitted emulators to o2 sensors. I have tried everything i can think of to stop this occuring. It is only when...
January 30, 2006
2000 Ford Taurus SE 4-Valve 3.0L MIL Lamp on VIN: 1FAFP56S1Y
P0172: rich bank 1. freeze frame showed trim pegged rich, and was still close to that when it came in. I opened the breather and all of a sudden short term went the other way. Filter was dirty, but it did not go back to rich when reassembled. Maybe I knocked some trash off the MA...
January 31, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 31, 2006