O2 sensor heater codes

You need to clean your mass airflow sensor.

https://www.2carpros.com/articles/mass-air-flow-service

Let me know if this takes care of it.

Rich

I have seen this problem before and replacing the PCM fixed it. The heater driver goes out which is internal to the PCM. Here is the location to the PCM and instruction on how to replace it in the diagrams below. Check out the diagrams (below). Please let us know what happens.

Rich and Ken, thanks for the responses. Since it is easier faster and cheaper, I'll do the MAF first hoping that will do the trick. I had been investigating and considering the PCM as well, but hope to leave that as the last resort. I am thinking that I can check the PCM by using a volt meter to check for power to the sensors before committing to replace it.

If the MAF cleanup doesn't work, I'll be back to discuss the testing of PCM.

Thanks for the suggestions it gives me some items to eliminate to resolve the problem. Will let you know progress.

I just had this exact same issue with my car a few months ago and my MAF was filthy. If the cleaning doesn't work I would try replacing the MAF before jumping to the PCM. Much cheaper and less hassle.

I am not sure if the MAF sensor will affect the oxygen sensor heaters but you never know. please let us know whats happens.

Thanks for all the advice. Finally got frustrated not being able to find a problem to fix, broke down and got an ECM from carcomputerexchaange.com.

Installed it a few days ago and the problem was resolved. Because the unit has a jelly like heat sink, I didn't try to see if I could see damage in the bad one.

Now my only headache is getting the drive cycle to complete to pass inspection.

Thanks again and stay safe in there.

Here are the driving procedures to force the monitors to learn. Basically this will take an hour or two of driving but it will force them to run. However, it is helpful if you have a scan tool that you can check the status of each monitor after the specific drive procedure. Hopefully this will help get them to run rather then waiting for them to run under normal driving.

Just make sure you clear codes before starting all these.

Ken thanks again! I went through the procedures and got everything cleared. Got my sticker and good until at least next year.

Great news! Thanks for the update. Glad that helped. Come back if you need more help with other issues. Thanks