Battery Charger High-Voltage Converter 2 Input Current Too High
Table of contents
P1EFB CADILLAC Possible Causes
- Faulty Battery Charger
- Battery Charger harness is open or shorted
- Battery Charger circuit poor electrical connection
How do I fix code P1EFB CADILLAC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1EFB CADILLAC code
The cost of diagnosing the P1EFB CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1EFB CADILLAC Description
The hybrid/EV powertrain control module 2 monitors the battery charger high-voltage output and current output and ensures they are within the proper range. The battery charger operates in either a constant current mode or a constant voltage mode. Whichever mode you are in will determine which diagnostic will be run. The battery charger runs constant voltage mode at the beginning and end of the charge cycle and runs constant current mode most of the charging cycle.