Car Problem Reports

Pontiac Grand Prix Check Engine Light Due to Oxygen Sensor Failure

 
Pontiac Grand Prix Problem
6 Reports
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Model Years Affected: 1990, 1991, 1992, 2004, 2005

Exhaust & Emissions Affected: 2.3L 4 Cylinder

Average Mileage: 112,000 mi (85,000 mi - 139,000 mi)

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

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