Code p0882

Hello,

First I would like to ask, was this problem the reason why you replaced the PCM and TIPM in the first place? Or did it start doing this right after they were replaced?

Regards,
Jon

Yes, it was the reason.

Okay, let me check a few things over here. It sounds a wiring issue to me. Especially since the behavior started even before you did the replacement of the PCM and TPIM. I say assuming that neither of them had been touched before this happened. What I would suggest at this point is to start looking at the wires and connectors. You would be looking for smashed shorted or broken wires. Let me look through the diagrams and see what will help you the best.

Jon

The other thing is when there is no communication .5 volts reference is present so what I heard is if there is 5 volts reference than ground and power to the PCM are good. Also at the same time the PCM does not power up the transmission relay so the car goes to limp mode and no back up light also like you saw in the video the P N R 1 2 either disappear or all of them selected. Also, I forgot to tell the behavior is intermittent.

Hello, I am Danny.

Here is a wiring diagram for your vehicle. Have you checked the wiring for broken/corroded/burnt wires near the PCM? Just adding my two cents and hope this helps. I have attached a diagram and a few tutorials for you. Thanks again for using 2CarPros.
Danny-

https://www.2carpros.com/articles/how-to-check-wiring

Sorry Danny the picture is small I cannot see the writing.

Let me see if I can get you a bigger picture. I am having trouble logging in to my reference data.
Jon

Since you say that it is intermittent, then I would definitely look for a broken wire, chafed wire shorting to ground or a damaged connector. That intermittent stuff happens to me all the time. They are the hardest things to troubleshoot! See the diagrams below.
Jon

while I am checking the wiring I have a question. Does PCM pin #24 red/gray (Gen Sens) connector #1 can cause the issue I have?

Never mind it was not the cause. Can anyone give me electrical diagram for the backup light?

Hello, I am Danny,

Here is the back up light diagram. I have also attached a tutorial showing how to check wiring. Hope this helps and tanks again for using 2CarPros.
Danny-

https://www.2carpros.com/articles/how-to-check-wiring