P0E1CHybrid/EV Battery Pack Coolant Pump B Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Check engine light on
- Pump B runs constantly or not at all
- Reduced power under heavy load
- Likely causes
- LikelyPump B control wire shorted to battery voltage
- PossibleInterrupted pulled-up PWM input at the pump
- RareControl module software fault, as Ford found for pump A
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.