DTC P0133 - Oxygen Sensor Circuit (Sensor No. 1) Slow Response: Condition

DTC is set when ECM detects a response time of one second or more from sensor to change from rich to lean, or lean to rich. Possible cause is:

NOTE: Sensor No. 1 refers to sensor located in exhaust manifold. Sensor No. 2 refers to sensor located behind catalytic converter.