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P0172 Diagnostic Trouble Code Discussion for March 2011

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2004 Ford E-350 Super Duty 5.4L MIL Lamp on VIN: 1FDWE35L64
P0172: Bank 1 To rich. Ok this vehicle is maxing out the negative fuel trim on the right bank and max positve on the left bank. first swapped o2 sensors to check for a bias and no change. performed a fuel injector drop test it is ok. pressure is also at 35 pounds running. smoke test...
March 01, 2011
1999 Dodge Intrepid 3.2L Poor Idle Quality, MIL Lamp on VIN: 2B3HD56J3X
P0172: Fuel System Rich (Bank 1). ... that sets code p0172 right bank rich all the time.also misfire on cylnder #1. Compression , fuel pressure, injector balance,spark ,valve timing (t belt)all check out.computer shows its trying to lean out rt bank and i think that is what is making cylinder ...
March 02, 2011
2004 Ford E-350 Super Duty 5.4L MIL Lamp on VIN: 1FDWE35L64
P0172: Bank 1 To rich. Ok this vehicle is maxing out the negative fuel trim on the right bank and max positve on the left bank. first swapped o2 sensors to check for a bias and no change. performed a fuel injector drop test it is ok. pressure is also at 35 pounds running. smoke test...
March 03, 2011
2008 Chevrolet Impala LT 3.5L MIL Lamp on VIN: 2G1WT55K68
P0172: Bank 1 System too rich. We have checked the O2 sensor, isolated the purge valve, and checked fuel pressure and come up with no reason for bank 1 to be running so rich (LTFT -21). Bank 2 pid is not available on our scan tool. Not really sure what will be our next step to figure this o...
March 12, 2011
2000 Volkswagen Golf GL 2.0L MIL Lamp on VIN: 3VWSA21C8Y
P0172: fuel system rich bank 1. ... power.I replaced the MAF sensor 2 weeks ago for p0172 code.Under WOT load pid read 80%. After replacing MAF WOT load pid improved to 93% at WOT. Fuel trims are near zero at any throttle but steady -2% at idle.Freeze frame shows LTFT -2% at 73 degrees celci...
March 16, 2011