P2E46
Hybrid/EV Electronics Coolant Pump B Overspeed - Dry Run
Hybrid/EV electronics coolant pump B reports a overspeed - dry run condition. Power electronics cooling on this branch is impaired.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Pump motor or driver faultCommon
- Air or coolant level issuePossible
Parts involved
- Hybrid Electronics Coolant Pump B
- Power Electronics Coolant Loop
P2E46 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.