Car Problem Reports

Volvo S70 Air Pump Failure Due to Failed Air System Check Valve

Volvo S70 Problem
14 Reports
Me Too

Model Years Affected: 1998, 1999, 2000

Average Mileage: 134,040 mi (18,500 mi - 223,000 mi)


The secondary air pump may fail causing the check engine light to illuminate. The cause is often a failure of the air pump check valve that contaminates the air pump with exhaust gas/moisture.

  • , , 100,000 mi

    This is an easy fix. Check valve fails, condesation enters pump, bearings freeze, shazam CEL light is on. Air pump is under battery tray. Buy a rebuilt pump with warrenty on ebay ~$150. Buy a new check valve ~$50. Buy a new relay (#2 in main fuse box) ~$20. Replace parts. Done.

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  • , , 83,543 mi

    Check engine light due to failed secondary air pump. Check valve failure also.

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  • , , 223,000 mi

    I recently bought my 98 volvo s70 from a guy that had pulled out the check engine light. Well comes to find out that i am throwing 10 codes and had to do with the smog pump/air pump

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  • , , 139,400 mi

    Air pump whining loudly for several months when first started, then abruptly stopped with CEL.

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  •  Rookie

    Air pump failed due to moisture from failed check valve

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