My brother got an 96 EK/B20Z hybrid he's throwing three codes even after we fixed his secondary O2 sensor. He's throwing a code 41 and a new code 65 (Oxygen heater) does that have something to do with the wires of the O2 sensor. Either the two black ones or the white or the green. We need help. Thanks.

 

The 4 wire O2's use the 2 black wires for the heater section. You need to have them hooked up if your ECU is looking for them.

 

thanks