DTC P0133: Ho2S Bank No. 1 (Left Bank) Sensor No. 1 (B1 S1) Circuit, High Input: Condition
DTC is set when time for HO2S B1 S1 to change from lean to rich or from rich to lean is high. MIL is illuminated when Power Control Module (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:
- HO2S B1 S1 malfunction.
- PCM malfunction.