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Home › Mazda › 2002 › Tribute ES, FWD › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics › Diagnostic Tests › DTC P0133 Or DTC P0153 › Possible Causes

Possible Causes

Possible causes are:

Contaminated HO2S.
Exhaust leaks.
Shorted or open wires.
Improper fueling.
Mass Airflow/Intake Air Temperature (MAF/IAT) sensor.
Deteriorating HO2S.
Intake air leaks.