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Home >> Subaru >> 2001 >> Outback Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - 2.2L & 2.5L >> Diagnostic Tests >> DTC P0133: Front Ho2S Circuit Slow Response

DTC P0133: Front Ho2S Circuit Slow Response

  1. Perform basic diagnostic procedure. See BASIC DIAGNOSTIC PROCEDURE . If DTC P0131, P0132, P1130, P1131, P1132, P1133, P1134 and/or P1137 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, holes, leaks, or loose components. Repair or replace exhaust system components as necessary. If exhaust system is okay, replace front HO2S. Clear memory and perform verification procedure. See CLEARING DIAGNOSTIC TROUBLE CODES  and VERIFICATION PROCEDURE  .
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