P0E1C code meaning
Hybrid/EV Battery Pack Coolant Pump B Control Circuit High
Powertrain system Generic code P0Exx codes Check engine light
What P0E1C means
P0E1C is set when the command signal to battery coolant pump B stays above what the controller allows, for instance because the line is shorted to battery voltage or, on a pulled-up PWM input, interrupted. No manufacturer documents P0E1C publicly. Its pump A counterpart P0C49 appears in Ford bulletin 20-2293 for the 2020 Lincoln Aviator hybrid among MIL codes for the coolant pumps, with BECM reprogramming as the fix. In contrast to a ground short, a line held high can either keep a simple on/off pump running continuously or, with PWM pumps that read a steady high as an invalid command, make the pump fall back to a default speed or stop. CARB requires circuit monitoring of thermal management outputs. Look for a wire touching a live feed. P0E1B is the low case, P0E1A the open circuit.
P0E1C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0E1C
- Check engine light on
- Pump B runs constantly or not at all
- Reduced power under heavy load
Common causes of P0E1C
- Most likelyPump B control wire shorted to battery voltage
- PossibleInterrupted pulled-up PWM input at the pump
- Less likelyControl module software fault, as Ford found for pump A
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 bWiring harnessBms
What each part of P0E1C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 1C | The exact fault in that area. |
What to do next
- Note P0E1C 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 P0E1C
What does P0E1C mean?
P0E1C means "Hybrid/EV Battery Pack Coolant Pump B Control Circuit High". P0E1C is set when the command signal to battery coolant pump B stays above what the controller allows, for instance because the line is shorted to battery voltage or, on a pulled-up PWM input, interrupted. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E1C?
Drive gently and only to a workshop. With P0E1C the car can go into limp mode (reduced power) to protect itself.
Will P0E1C fail an emissions test?
Yes, it can. P0E1C 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 P0E1C to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0E1C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.