2004 cv70 code P0600, 0504,40073,P0863

raquette · Post by **raquette** » 05 Apr 2022, 19:18

150k miles - today car abs/brake light came on, with all these codes listed in the subject. car has bene trouble free.

tach, temp and speed gauge quit but was able to drive the car home. would not shifty into OD.

also shifting up very erratic.

from other posts I see the P0600 communication link is likely then CEM not communicating to the ECM that is known to be problematic with age and heat.

car now is in limp mode and starts but quits, cannot drive with confidence.

Is this enough information to send the ECM and CEM to XeMODeX for rebuild?

Price: $649.00

Thanks all

Post by **abscate** » 06 Apr 2022, 03:37

It’s pretty cool here to be having CEM overheats. You can try blowing cool air on it with a 12 fan too

raquette · Post by **raquette** » 06 Apr 2022, 03:43

would an matched ECM and CEM out of another 2004 work without any reprogramming?

Post by **abscate** » 06 Apr 2022, 03:47

I’m not an expert on this but I think you also have to match the DIM and immobiliser

raquette · Post by **raquette** » 06 Apr 2022, 18:19

took the advice to replace the battery and so far so good, no codes returned.