P0B6CHybrid/EV Battery Voltage Sense J Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- No manufacturer documents P0B6C publicly. The code stands for a channel J signal that is unstable, with brief jumps or dropouts, as opposed to the steady faults covered by P0B68 to P0B6B. CARB section 1968.2 requires that the individual electronic inputs of a hybrid energy storage system, battery voltage sensors expressly included, be monitored for circuit and rationality faults; erratic behaviour is one way such a fault can show. GM, which publishes tests for the other four channel J codes, lists none for this one. For the driver it would mean a warning that comes and goes, possibly with short power cuts. A cable or connector with marginal contact is the most plausible cause.
- What you may notice
- Intermittent warning light
- Brief power reductions while driving
- Likely causes
- LikelyMarginal contact in the channel J harness or connector
- PossibleCracked solder joint on the monitoring electronics
- 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: €80 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.