robmustang201528
15 mustang gt302blown
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- #1
This is the 3rd or 4th 02 sensor I've had to buy in 3 or 4 months. This time it says P2243. 02 sensor reference voltage circuit/ open bank 1 sensor 1. The last time it said p2251 negative current control/open bank 1 sensor 1. I just replaced the extension harness. I have longtubes on my car without cats. Recently just started having this problem. What can it be? Should I replace thr harness again?? I don't know what else to do. I replaced the extension harness and the 02 sensor... what else could it be? Thanks
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