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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1133: Ho2S1 Circuit - Insufficient Switching >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2002 Saturn LW200, 2002 Saturn L200, and 2002 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.

DTC is usually set by contamination. Contamination can be caused by fuel, improper use of RTV, engine oil or coolant. Repair cause of contamination first before replacing oxygen sensor.

The most probable cause for DTC P1133 is contamination. Check for obvious contamination (oil, fuel or engine coolant) by removing sensor. Identify and correct the cause of the contamination if contaminated. Replace the HO2S1.

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