Honda civic code PO135 won't turn off with new o2 sensor?
Code reader said po135 which means O2 Sensor Heater Circuit Malfunction. Bought a new o2 sensor, changed it and then reset the dash board. The light stayed off while the car idled but came back on when I drove it with the same code. Someone on youtube said that if it doesn't idle properly, you probably have a dirty aic valve and that could be what is causing the o2 sensor not to work. The car idled fine but I tried cleaning it anyways, the same thing happened. Someone please help!
So the same code came back after resetting? Then you've got a fuse/wiring/connector problem to the sensor heater. We could look it up but you kinda forgot to give us the year and engine info
Check the connector for corrosion maybe buy dielectric grease and put it on the connector and put it into the Sensor it might work. Clean the AIC then with MAF sensor cleaner its $8
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