Powertrain
Definition only
Lights the check engine lamp
P2E46: Hybrid/EV Electronics Coolant Pump B Overspeed - Dry Run
Standardized SAE J2012 code · P2Exx codes
What does P2E46 mean?
Hybrid/EV electronics coolant pump B reports a overspeed - dry run condition. Power electronics cooling on this branch is impaired.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Pump motor or driver fault
- Medium Air or coolant level issue
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2E46 on the same make and model first.
P2E46 in the community
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