P0E4CHybrid/EV Battery Pack Voltage Sense F Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0E4C means pack voltage measurement F reports a value above anything the battery can produce. Common reasons are a sense line in contact with a higher potential, a lost ground reference in the measuring circuit or a faulty analog input, so the channel rather than the cells is suspect. No manufacturer documents P0E4C publicly. In GM's 2019 hybrid tables the channel A code P0ABD sets above 479 V, again 1.6 s within 2 s and Type A. CARB requires battery voltage sensors to be checked against upper and lower limits. Real overvoltage of single cells is reported by cell voltage codes such as P0DE7, while the low fault of channel F is P0E4B and the same high fault on channel E is P0E47. The controller usually blocks or limits electric operation.
- What you may notice
- Warning lamp and limited electric drive
- Charging interrupted or not started
- Likely causes
- LikelyChannel F sense line touching a higher potential
- PossibleLost ground reference or broken divider in the measuring circuit
- RareFaulty analog input or software of the battery controller
- 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: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.