OBD-II code · Powertrain (generic, extended)
P2DD0 Control Pilot Charging Switch B Circuit Low
The control pilot charging switch B reports a circuit low condition. SAE J1772 charging signal handshake may be compromised.
Is it safe to drive with P2DD0?
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
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
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
- Control Pilot Switch B, Wiring Harness, Bms
Related codes
- P0CFAControl Pilot Charging Switch A Circuit Low
- P2DCDParticulate Filter B Incorrect
- P2DCEControl Pilot Charging Switch B Circuit/Open
- P2DCFControl Pilot Charging Switch B Range/Performance
- P2DD1Control Pilot Charging Switch B Circuit High
- P2DD2Control Pilot Charging Switch B Intermittent/Erratic
- P2DD3Control Pilot Charging Switch B Stuck Off
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.