So something is really screwed up here...I have a B16A...first my ecu was throwing codes for the O2 Sensor (code 1), Then for the VTEC Solenoid Valve (code 21), then my knock sensor (code 23), and finally my Primary Oxygen Sensor Heater (code 41). I put in a new O2 sensor and the code went away. Then I put a new knock sensor in, and that went away too. But then after resetting my ECU they all came back. And sometimes only code 41 would show, and then sometimes 41 and 23, and sometimes 41 and 21, and then sometimes all of em. It cant seem to make up its mind. Does anybody know what the hell is going on with my ecu?

 

go to autozone or something and have them clear the codes with their obd scanner.

 

check your plugs

 

His plugs wouldnt have set off 4 codes.