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Home >> Toyota >> 2004 >> RAV4 Base, AWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Diagnostics >> Circuit Inspection >> DTC P0171: System too Lean (Bank 1), DTC P0172: System too Rich (Bank 1) >> Monitor Strategy
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Monitor Strategy

STRATEGY MONITORING

Related DTCs P0171: Fuel trim lean
Related DTCs P0172: Fuel trim rich
Required sensors / components (Main) Fuel system
Required sensors / components (Related) A/F sensor, MAF meter, CKP sensor
Frequency of operation Continuous
Duration 10 sec.
MIL operation 2 driving cycles
Sequence of operation None