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P0172 Diagnostic Trouble Code Discussion for November 2017

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2007 Pontiac G6 3.5L Poor Idle Quality, MIL Lamp on VIN: 1G2ZH18N27
P0172: Fuel System Rich (Bank 1). this one is killing me. bank 1 fuel trims maxed at -31 long and short. bank 2 +31 long and short. runs bad until you reset fuel trims to 0 then purrs like a kitten. then fuel trims immediately start running down on bank 1 and up on bank 2 and starts to run bad...
November 09, 2017
2003 Toyota Avalon XL 3.0L Cuts out, Misfire, MIL Lamp on VIN: 4T1BF28B93
P0172: Fuel System Too Rich (Bank 1). ... on and lack of power when warm under accel. Codes p0300,p0304,p0305,p0172,p0325,p0330. replaced knock sensors with OE parts, replaced coil #4. New spark plugs had been installed and the correct ones,performed compression test and fuel pressure test, all wi...
November 09, 2017
2011 Chevrolet Cruze LT 1.4L Poor Idle Quality, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G1PF5S9XB
P0172: System Rich Bank 1. ... why the idle surges, stalls sometimes, and is setting these codes. I replaced the engine a while back due to the turbo overheating and melting the return line. Wasnt sure if other internal damaged occured so we just replaced the engine. Came back in a coup...
November 13, 2017
2011 Chevrolet Impala LS 3.5L Excessive Emissions, Poor Idle Quality VIN: 2G1WG5EK1B
P0172: Fuel system rich. Customer is complaining of a rough running condition on the first start up when the vehicle is cold everyday. We verified this problem. Once it warns up it goes away. The pcm is backing off the fuel trims -25%. We pulled the fuel rail to make sure we did n...
November 17, 2017
2012 Toyota Tundra Limited 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 5TFBW5F11C
P0172: rich bank 1. Got this Tundra that runs rough at idle and has very negative long term. B1S1 and B2S1 both do not fluctuate much at idle or highway--run around .9-1.00. B1S2 and B2S2 stay around .9 idle or down the highway but will drop to .1 when letting off the throttl...
November 30, 2017