OBD-II code · Powertrain (generic)
P0B35 High Voltage Service Disconnect Circuit Low
The high-voltage service disconnect circuit reports a circuit low condition. Safe HV disconnection state cannot be verified.
Is it safe to drive with P0B35?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWire shorted to ground
- PossibleSwitch shorted
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Service Disconnect Switch, Wiring Harness, Bms
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.