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Home › Subaru › 2000 › Outback Base, Automatic › Repair and Diagnosis › Engine Performance › System › ENGINE CONTROLS - Self-Diagnostics › Diagnostic Tests › DTC P0133: Front Oxygen Sensor (O2S) Circuit Slow Response

DTC P0133: Front Oxygen Sensor (O2S) Circuit Slow Response

  1. Turn ignition off. Connect scan tool. Turn ignition on. If DTC P1130, P1131, P1132, P 1133 and/or P1134 exist, diagnose and repair those DTCs. Do not diagnose DTC P0133. If DTC P0133 is only DTC set, go to next step.
  2. Check exhaust system components for damage or loose components. Repair or replace exhaust system components as necessary. If exhaust system is okay, replace front O2S.
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