Chevrolet S10 Problem Report

Chevrolet S10 Check Engine Light Due to Oxygen Sensor Failure

(11 reports)

The oxygen sensor can fail causing Check Engine Light illumination and the engine to run rich (burn more fuel than normal).

Sensor heater not working in 2 sensors -
Check engine light on constantly. Level 1 diagnostic flagged Oxygen Sensor #1, Bank #1. Replacing sensor corrected problem. -
Had to replace the down stream O2 sensor. -
truck start but runs high and low in idleing then stalls -
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