P0171 Diagnostic Trouble Code Discussion for June 2024
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2007 Ford Mustang 4.0L Excessive Emissions, MIL Lamp on VIN: 1ZVFT80N67 P0171: Lean Bank 1. Help! Thanks in advance. I tried smoking the intake system but found no leaks. If I ad propane to the intake the fuel trim will go negative but never correct close to 0, it will stay close to 10 on the LT trim for both banks. I sprayed water around intake ... |
June 26, 2024 |
