[ezrush]

Hey guys wondering if someone can point my in the right direction on troubleshooting the following codes.

I noticed last week that my coolant pump was staying on longer than I remember, and there was a CEL on my dash. Woke up in the morning and the car was dead. Charged it back up and drove for the week disconnecting the battery until I could run the scanner.

After running the scanner I got the following codes pop up

CD8E10 LIN Data bus: communication error
CD9010 LIN, communication (electrics coolant pump): missing
CD8F10 LIN, communication (IBS): missing
CD9003 LIN, communication (aux water pump) :missing

[amolaz4mc]

Any answers yet? I have a 2016 435i and have the exact same issue/ codes which started a couple weeks ago….I changed out my auxiliary water pump but the problems persisted. I’ll keep you posted if I have any updates.

[ezrush]

It's still doing the same thing, all I can tell as of right now is it's obvious that something is not telling the electrical coolant pump to turn off, and it stays on until the battery dies.

Would anybody know where I should be looking, is there a harness under the hood that I could check?

[amolaz4mc]

I ended up replacing the coolant pump and it solved all my issues…