BMW Drive unit aka DISA for the 4.8is

[twinspool]

I've recently got a CEL light and the DTCs I obtained were

- 2B70
- 2B71
- 2B72

These all lead to a bad "DISA" - Drive unit on the 4.8is but wondering how many folks have had to replace this unit? I know nothing is finite on these but I couldn't find much about them during my search..

Then I decided to run a generic OBDII reader and pulled the following code:

- P1515

and this code is everywhere, highlighting a bad TPS,TB

for the TPS to be bad, I feel there would be some symptoms related to a bad TPS/TB, such as bucking, possible stalling etc and I am not currently experiencing any of that.

What are you thoughts/experience with these codes if any...

BMW Drive unit is abt $200 more than a new TB/TPS and I don't want to go dumping money on unnecessary parts.

appreciate the help!

[X5chemist]

Remove and clean the TB. Don't open the plate manually. Use TB cleaner only. Check the connector. Clear the codes and drive it.

[twinspool]

Originally Posted by X5chemist

Remove and clean the TB. Don't open the plate manually. Use TB cleaner only. Check the connector. Clear the codes and drive it.

ooofff.... being super lazy due to the weather up here in the northeast.. but you have a point.. clean it, drive it and see if codes come back.. cheaper than throwing parts at it.