P0E1E code meaning
Hybrid/EV Battery Pack Coolant Pump B Control Circuit Driver Current/Temperature Too High
Powertrain system Generic code P0Exx codes Check engine light
What P0E1E means
P0E1E does not describe the wire or the pump directly but the switching stage that drives pump B: that driver has reported excess current or overheating and has protected itself. Such smart switches measure their own state; a TI automotive high-side switch, for example, turns off at about 150 °C junction temperature or on reaching its current limit and signals the fault on a diagnostic pin. No manufacturer documents P0E1E publicly. GM's 2019 tables show a comparable monitor for a different load, the fuel pump driver code P1255: a board temperature of 160 °C or more, 3 failures in 15 samples, Type B. A pump that drags or seizes, a partial short in the motor or a hot mounting spot of the module are typical. Pump A has the same code as P0E1F.
P0E1E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0E1E
- Check engine light on
- Pump B switches off intermittently
- Battery or electronics temperature rises, power is limited
Common causes of P0E1E
- Most likelyPump B binding or seized, drawing too much current
- PossiblePartial short in the pump motor or its wiring
- PossibleDriver in the module overheating due to location or poor cooling
- Less likelyDegraded output driver in the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery pack coolant pump bBms
What each part of P0E1E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 1E | The exact fault in that area. |
What to do next
- Note P0E1E and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0E1E
What does P0E1E mean?
P0E1E means "Hybrid/EV Battery Pack Coolant Pump B Control Circuit Driver Current/Temperature Too High". P0E1E does not describe the wire or the pump directly but the switching stage that drives pump B: that driver has reported excess current or overheating and has protected itself. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E1E?
Drive gently and only to a workshop. With P0E1E the car can go into limp mode (reduced power) to protect itself.
Will P0E1E fail an emissions test?
Yes, it can. P0E1E is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0E1E to fix?
Difficulty: hard. A typical repair takes 1 to 3 hours of work. This is a job for a workshop.
Will P0E1E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.