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P0172 Diagnostic Trouble Code Discussion for January 2009

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2004 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on VIN: 1GNDT13S14
P0172: Fuel System Rich (Bank 1). hello fellow techs need help have a 2004 trailblazer with a 0068,0172,0128 code followed diag. tree from alldata with no conclusive answer to the problems. did unplug map sensor seemed to run better but not 100% ect reads correctly rpms do fluctuate no power,s...
January 02, 2009
2001 Pontiac Bonneville SE 3.8L Excessive Emissions, Stall, HARD RESTART VIN: 1G2HX54K81
P0172: Fuel Trim System Rich. ... module on with no luck. we put module on because of strange signal from icm to pcm the crank signal was not right. the module made the signal good but didnt fix the dying problem. all other sensors are working like they should. that i know of. now after da...
January 07, 2009
2000 Ford Ranger XL 3.0L MIL Lamp on VIN: 1FTZR15V2Y
P0172: system lean bank 2. Hello, fellow junk fixers(sorry, TECHS) We have one here eating our lunch and leaving no tip. As per related repair history, you can assume our bosses are getting pretty tired of us "throwing parts" at this truck. Close visual inspection and some guess...
January 16, 2009
2002 Land Rover Freelander SE 2.5L MIL Lamp on VIN: SALNY22212
P0172: Lambda control limit bank 1. Short circuit to ground. Replaced both oxygen sensors and fault still remained. Data stream shows correct fluctuation of sensor voltage, but the corrective fuel trim for bank 1 is 6480 and bank 2 is 414
January 20, 2009
1997 Chrysler LHS 3.5L Poor Fuel Economy, MIL Lamp on VIN: 2C3HC56F7V
P0172: Fuel System Rich (Bank 1). have a car that came in with a vacumn leak at lower intake manifold,along with p301.after a couple days car came back in with po172 bank 1 rich.found fuel pressure to be 45 psi at key on engine off. when running i have 80 plus engine running.i have replace fue...
January 23, 2009
1999 Toyota Camry LE 2.2L Poor Fuel Economy VIN: JT2BG22K0X
P0172: Fuel System Too Rich (Bank 1). Is this the way it is suppost to work? I could not find anything in alldata that could tell me if it has to be working for a sertain amount of time and then stop keeping the vaccum in the system. I am thinking that the other posibility is a bad fresh air contr...
January 29, 2009