Hello Mr. Scotty, I want to start off by telling you that I'm happy that I have came across you on youtube last year. I love watching your videos They are very helpful. I have a 2000 Cavalier and two weeks ago, while driving home, my car started losing power and has moved on to rough idling and not starting sometimes. Last Thurdsy, I had a mechanic come out to look at my car and due to him having surgery on his arm and being in a sling, he couldn't get into depth with my car as he wanted to, but he did checked a few things out that he thought could be wrong. He didn't like that his expensive obd machine couldn't read my car to help him try to pinpoint the problem.He was able to change my spark plugs after seeing they were bad. I wished he could have worked with both arms, but it was nice of him to come see about me in the condition that he was in. He was trying to help me out and I thank God for that. Last night I bought a $30.88 obd2 scanner and this morning I ran a test on my car. It indicated that I had 1 probllem. It gave me a P0141 02 Sensor Heater Circuit Bank 1 Sensor 2 code. When I ran a previous test, I saw that code, plus a P0300 Random/Multiple Cyclinder Misfire Detected code. I'm assuming the second code was already stored in my computer, due to my check engine light coming on a long time ago. Also, when I did an obd test again, it showed me 1 problem, which was the P0141 O2 Sensor Heater Circuit Bank 1 Sensor 2 code.

Which colde is my true code and what do you think that I need to have change on my car? I haven't looked at my coil pack, but I do know that my spark plug wires look old. My car is 18 years old and this year will make 6 years that I had it. I never had the wires or coil pack changed. I just had the sparkl plug changed last Thursday. I know bad me.

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ScottyKilmer
ScottyKilmer

Editor

without me analyzing it in person with my own scan tool, I would be guessing. jBut sensor heater won't make random misfires, odds are you have more than one problem. try a new sensor, but that wont fix the 300 code which can have dozens of ccauses