P0ABCHybrid/EV Battery Pack Voltage Sense A Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0ABC is stored when the pack voltage sensor reports a value below anything the battery could really have, pointing to a short to ground or a lost sense signal rather than a discharged pack. GM's 2016 and 2019 hybrid tables set it below 4.8 V with system voltage above 10.2 V, after 8 failed samples out of 10 taken every 25 ms, and rate it Type A with MIL on the first trip. The 2013 table for an earlier hybrid uses a limit of 30 V, 7 of 10 samples and Type B. A real deep discharge is handled by other codes such as P0AFA. Because the controller no longer trusts pack voltage, hybrid operation is restricted or the vehicle will not go ready.
- What you may notice
- Hybrid system or check engine warning on
- Vehicle may refuse to enter ready mode
- Engine runs continuously, no electric drive
- Likely causes
- LikelySense line shorted to ground or disconnected
- PossibleSense fuse or link open so no voltage reaches the input
- RareBattery controller measurement input defective
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €2,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.