My Cat was stolen. Replaced the system with sensors, third party. since then I get the error message o2 sensor high voltage bank 1. Many people are having this problem. not sure why third party sensors do not. work. it should be remove the connector with cut wires. get the new sensor with the connector and plug back into socket.
anyway now I am getting rough idle. when I am at a red light with gear D selected and brake pressed. I can see the rev going up and down. doe not vary hugely. just small fluctuations. it drops a bit below 500 very briefly, car shakes a bit then back to normal. this happens time to time. Could this be a symptom of the bad sensor? sometimes car struggle to acceleration and right after I get the check engine light saying over voltage bank 1. so something definitely to do with O2 sensor ?
