OBD-II code · Powertrain (generic, extended)
P2E43 Hybrid/EV Electronics Coolant Pump B Control Circuit Low
Hybrid/EV electronics coolant pump B reports a control circuit low condition. Power electronics cooling on this branch is impaired.
Is it safe to drive with P2E43?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPump motor or driver fault
- PossibleAir or coolant level issue
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Hybrid Electronics Coolant Pump B, Power Electronics Coolant Loop
Related codes
- P0CEBHybrid/EV Electronics Coolant Pump A Control Circuit Low
- P2E40Battery Charger B Module Forced Shutdown Voltage High
- P2E41Hybrid/EV Electronics Coolant Pump B Control Circuit/Open
- P2E42Hybrid/EV Electronics Coolant Pump B Performance
- P2E44Hybrid/EV Electronics Coolant Pump B Control Circuit High
- P2E45Hybrid/EV Electronics Coolant Pump B Enable Circuit
- P2E46Hybrid/EV Electronics Coolant Pump B Overspeed - Dry Run
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.