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P0172 Diagnostic Trouble Code Discussion for February 2021

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2012 Chevrolet Silverado 1500 LT 5.3L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1GCRKSE70C
P0172: Fuel System Rich Bank 1. This truck has no power at all and doesn't want to rev above 2500 rpms under load, such as going up a steep grade. Keeps setting P0101 and P2635 codes, have checked fuel pressure both engine off (57 psi) , at idle and while driving, fuel pressure stays pre...
February 15, 2021
2006 Chevrolet HHR LT 2.2L MIL Lamp on VIN: 3GNDA23D56
P0172: Fuel System Rich. ... full throttle. Had code p0172 rich, p0300 misfire. fuel trim short term -7 and long term -21. found coil pack broken and plugs fouled. Replace spark plugs and coli pack. Ran compression test cyl.#1 170 psi #2 125 psi @3 175 psi #4 165 psi. cyl.leakage...
February 18, 2021