P0B6C code meaning
Hybrid/EV Battery Voltage Sense J Circuit Intermittent/Erratic
Powertrain system Generic code P0Bxx codes Check engine light
What P0B6C means
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.
P0B6C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 8 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0B6C
- Intermittent warning light
- Brief power reductions while driving
Common causes of P0B6C
- Most likelyMarginal contact in the channel J harness or connector
- PossibleCracked solder joint on the monitoring electronics
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery voltage sense jWiring harnessBms
What each part of P0B6C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| B | Area: hybrid propulsion. |
| 6C | The exact fault in that area. |
What to do next
- Note P0B6C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0B6C
What does P0B6C mean?
P0B6C means "Hybrid/EV Battery Voltage Sense J Circuit Intermittent/Erratic". No manufacturer documents P0B6C publicly. It is a generic code, so it means the same on every make.
Is it safe to drive with P0B6C?
Drive gently and only to a workshop. With P0B6C the car can go into limp mode (reduced power) to protect itself.
Will P0B6C fail an emissions test?
Yes, it can. P0B6C is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0B6C to fix?
Difficulty: workshop only. A typical repair takes 1 to 8 hours of work. This is a job for a workshop.
Will P0B6C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.