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Home >> Toyota >> 2010 >> Matrix S, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (Engine Control (SFI) System (2ZR-FE) (Diagnostic Codes (P0010-P043E))) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1) >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

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FUEL-TRIM

Purge-cut Executing
Either of following conditions 1 or 2 met -
1. Average between short-term fuel trim and long-term fuel trim 35% or more (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim -35% or less (varies with engine coolant temperature)