Check Engine Light Due to Oxygen Sensor Failure on Chevrolet Astro

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 119,000 (58,000–180,000)
Exhaust & Emissions affected: 2.5L 4 Cylinder
4 model years affected: 1990, 1997, 2000, 2002
4 people reported this problem
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Viewing 1 - 1 of 1 comments
Occasionally the Check Engine light comes on stays on. The repair shop takes the air cleaner apart and blows off the "mass air sensor" with an air hose. Then it's fine again for a long time.