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I got this code after finishing installing my headers, about 20 min and 30 miles after I left the shop. I think it is "TWC System low efficency Bank 2-A" Any idea what this is? I also got a whole bunch of right and left door control module codes (B2282,86 B2285 B2287) Could this be a ground problem?? Car runs and sounds great, even with check engine light on. Any help will be great.
If I'm not mistaken thats for the air pump on start up. Mine does it every couple of months. No Biggie
No, it isn't.
TWC stands for Three Way Catalyst, and it, (along with P0420) are codes that let you know your catalytic converters are inefficient or not working.
These two codes are thrown when the PCM doesn't detect enough of a difference in readings between the front 02 sensors, and rear 02 sensors.
Aftermarket high-flow cats seem to be good at causing these codes, and the only way to really cure this would be to edit the rear 02 sensors out of the PCM program, or use 02 sims.
Yep, thats the plan, as soon as DART heads are available from PrecisionPorting in FL, getting that and tha cam done. (231/237 591/598 112)
Been thinkin about our conversation at the car show, depending on what Jeff says, I will be stickin with stock lifters and rockers. dont plan on beatin on her too hard but plans have been known to change.