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1: unplug neg on battery for 2-3 mins
2: unplug the ecu 2-3 mins
3: pull emergency flasher fuse 2-3 mins
4: stop at autozone and have them erase your codes.
I just disconnect the battery, then push on the horn, turn lights on for a few seconds then reconnect battery. ECU is reset. Any recurring problems will trigger the CEL.