P1EB9 BUICK - High Voltage Energy Management Communication Bus Enable Circuit
- Faulty Hybrid/EV Powertrain Control Module
- Hybrid/EV Powertrain Control Module harness is open or shorted
- Hybrid/EV Powertrain Control Module circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P1eb9 Buick DescriptionThe Hybrid/EV Powertrain Control Module 2 activates the high voltage energy management communication enable circuit when the vehicle is on. This circuit wakes up the devices for high voltage energy bus communication.
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