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Cars & Trucks Master
1,406 Answers
- Posted on Jul 31, 2014
Re: '09 wrx obd codes P2200 and P3700....what do they...
P2200 = nitrogen oxide sensor bank 1.
P3700... no clue. Probably related to P2200, but manufacturer-specific.
That's an '09. This is an emissions issue. Your vehicle is covered by an emissions warranty until the year 2019. Use that warranty, don't pay to get this fixed.
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