P0B82 code meaning
Hybrid/EV Battery Voltage Sense O Circuit Range/Performance
Powertrain system Generic code P0Bxx codes Check engine light
What P0B82 means
P0B82 is a plausibility verdict on channel O. GM's 2016 program with a battery sense module asks cell O to trend at least 0.002 V in the direction of the average whenever the average moves by more than 0.022 V; 35 failed evaluations out of 40 set a Type A code. The 2019 controllers use the same logic with 0.005 V. Where O is NiMH block 15, on the 2012 two-mode hybrids, the battery pack control module multiplies blocks 15 and 16 by twenty and compares the result with the pack voltage, failing beyond 70 V in 160 of 170 samples, Type B. The BAS Plus mild hybrid needs half the average movement, 20 of 40, Type B. Low, high and open faults on the same channel are reported separately as P0B83, P0B84 and P0B81.
P0B82 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0B82
- MIL with otherwise normal driving
- State of charge display jumps or is inaccurate
Common causes of P0B82
- Most likelyChannel O reading frozen in the monitoring electronics
- PossibleBattery controller software fault
- Less likelyRising resistance in the O sense tap distorting the reading
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 oWiring harnessBms
What each part of P0B82 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. |
| 82 | The exact fault in that area. |
What to do next
- Note P0B82 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 P0B82
What does P0B82 mean?
P0B82 means "Hybrid/EV Battery Voltage Sense O Circuit Range/Performance". P0B82 is a plausibility verdict on channel O. It is a generic code, so it means the same on every make.
Is it safe to drive with P0B82?
Drive gently and only to a workshop. With P0B82 the car can go into limp mode (reduced power) to protect itself.
Will P0B82 fail an emissions test?
Yes, it can. P0B82 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 P0B82 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0B82 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.