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- 28 Jul 2014, 20:20
- Forum: Volvo S40 & V40 2000-2004
- Topic: 2001 S40 displaying MAF, Boost, O2 and Misfire codes
- Replies: 1
- Views: 976
2001 S40 displaying MAF, Boost, O2 and Misfire codes
i bought a used '01 S40 (131K miles) from wholesaler thought it was a good deal...CEL came within one month...Codes were MAF, MAP (Boost), O2 sensor (Bank 1 sensor 2), and misfires on all 4 cylinders... Replaced the MAF, MAP, Coils and plugs as well as Aft O2 sensor...Car will still not run even aft...