P0133

[P0133] The scan tool indicates Diagnostic Trouble Code (DTC) PO133: A slow response problem in the Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) circuit.


NOTE:
^ If DTC P0131, P0132 and/or P0135 are stored at the same time as DTC P0133, troubleshoot those DTCs first, then troubleshoot DTC P0133.

Possible Cause:
^ Primary HO2S (Sensor 1) Deterioration
^ Primary HO2S Heater (Sensor 1) Deterioration
^ Exhaust system leakage