Home/Subaru/Outback/Subaru Outback BG (1994-1999)/Repair manual/Testing & Diagnostics/DTC P0133 (FO2_R) - FRONT O2S CIRCUIT SLOW RESPONSE
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DTC P0133 (FO2_R) - FRONT O2S CIRCUIT SLOW RESPONSE Subaru Outback BG

If DTC P0130 is also present, diagnose DTC P0130 first. Clear DTC and retest. If DTC P0133 resets, check exhaust system and repair as necessary. If exhaust system is okay, replace front O2S.