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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Engine Controls - Self-Diagnostics - 2.2L) >> Diagnostic Tests >> DTC P1134: Ho2S1 - Transition Time Ratio >> Diagnostic Aids

Diagnostic Aids

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

An intermittent connection of corrosion in the HO2S1 harness connector can set this DTC. Use scan tool to monitor HO2S1 voltage with engine running at normal operating temperature while wiggling the signal and ground wire. Ensure sensor is tight.

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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