P0B32Hybrid/EV Battery D Voltage 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
- P0B32 sets when the voltage of hybrid/EV battery D goes above its permitted maximum. It is the high counterpart of P0B31; P0B30 covers unstable readings and P0B2F the general fault. No manufacturer documents P0B32 publicly; Bentley's P0B26 for battery A, cured by replacing the 48 V super capacitor, shows the same fault type on another unit. GM's analogous whole-pack monitor is P0ABD (above 479 V, Type A, MIL at once). CARB requires hybrid storage voltage sensors and cells to be monitored and codes to identify the replaceable unit. Causes are an overcharged cell group when balancing fails, a defective module or a measuring error. Charging and recuperation are cut back, and the contactors may open to protect the pack.
- What you may notice
- Hybrid/EV system or high-voltage battery warning on
- MIL on
- Charging or recuperation restricted
- Battery power limited, less electric drive or assist
- Likely causes
- PossibleCell group in battery D charged too high, balancing ineffective
- PossibleDefective module in battery D
- RareVoltage measurement fault in the controller or sense leads
- 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 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.