OBD-II code · Powertrain (generic, extended)

P2DB8 Battery Charging System B High Voltage Interlock Circuit Performance

The high-voltage interlock circuit of battery charging system B reports a circuit performance condition. Safety interlock chain may be compromised.

Is it safe to drive with P2DB8?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

  • Most likelyInterlock signal interrupted
  • PossibleInterlock connector not seated

Repair at a glance

Difficulty
Hard
DIY friendly
Best left to a mechanic
Typical labour
2–6 h
Emissions test
Usually unaffected
Parts involved
Bcs B Hv Interlock, Wiring Harness, Bms

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.