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
14 people reported this problem
5 people shared problem details
1998 Volvo S70100,000
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 S7083,543
Check engine light due to failed secondary air pump. Check valve failure also.
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 S70139,400
Air pump whining loudly for several months when first started, then abruptly stopped with CEL.
Air pump failed due to moisture from failed check valve
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