P0172 Diagnostic Trouble Code Discussion for May 2025
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2016 Chevrolet Suburban LT 5.3L MIL Lamp on VIN: 1GNSCHKC4G P0172&175 fuel trims showing -25 to -30 all speeds- removed pcv hose in case of oil contamination, pulled purge system fuel tank hose, still shows same- was told to ground lt green/white wire at MAF to keep it out of the circuit and run on other data..... |
May 01, 2025 |
