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Home >> Pontiac >> 2001 >> Firebird Formula, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 5.7L >> Diagnostic Tests >> DTC P0171: Fuel Trim System Lean - Bank 1; P0174: Fuel Trim System Lean - Bank 2 >> Code Enable Criteria
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Code Enable Criteria

For DTC to run, the following conditions must be met:

DTC will set when average long term fuel trim cell value is greater than 23 percent for 6 seconds.