Check Engine Light Due to Failed Secondary Air Pump on Volvo S70

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.

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Average mileage: 134,040 (18,500–223,000)
3 model years affected: 1998, 1999, 2000
15 people reported this problem
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Viewing 1 - 5 of 5 problem details
1998 Volvo S70 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.
1998 Volvo S70 139,400 mi,
Air pump whining loudly for several months when first started, then abruptly stopped with CEL.
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
1998 Volvo S70 83,543 mi,
Check engine light due to failed secondary air pump. Check valve failure also.
Air pump failed due to moisture from failed check valve