P0172 Diagnostic Trouble Code Discussion for May 2018
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2015 GMC Yukon SLT 5.3L Poor Idle Quality, Surge, Poor Fuel Economy, MIL Lamp on VIN: 1GKS2BKC3F P0172: rich bank 1. Well been at battle with this for too long, need help. This Yukon is setting rich codes both banks, driveabilty is good with no lack of power. To me it's just like an 08 with fuel composition issues. Using MDI and find no reset for that. Fuel trim reset wo... |
May 10, 2018 |
