Chosen Solution
Hello to all, I have in my shop one 2013 RR EVOQUE here, this car when drive for 10 minutes show the battery light on cluster. Faults in PCM: P065A-88 - Generator system performance B1087-00 LIN bus A I already test the line between generator - PCM Change generator Change PCM And nothing fix the problem, the generator charge 14+ all times, anyone already see problem like this?
Hey Mo If your alternator is charging fine then I would suspect a fault with Battery Monitoring Sensor. If you look at the negative battery terminal, there will be a connector with 2 pins. 1 signal and 1 positive. You will need to do wiring checks to make sure there isn’t an open circuit anywhere along the wiring. The positive travels from the positive battery terminal and go to the BMS (this also has a fuse in the circuit). The signal wire (Lin Bus) travels from the BMS to the Body Control Module in the passenger footwell. I would suspect the Lin Bus wire may be at fault as I have come across this before.
