P0C49Hybrid/EV Battery Pack Coolant Pump A 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
- P0C49 is set when the control signal to battery coolant pump A remains too high, for example because the line is shorted to battery voltage or, on a pulled-up input, interrupted. Ford uses it on the 2020 Explorer, Police Interceptor Utility and Lincoln Aviator hybrids. Bulletins 20-2293 and 20-2345 list it right after P0C48 among a group of MIL codes for the battery and electronics coolant pumps; Ford traces them to the battery energy control module software and fixes them by reprogramming. GM, by contrast, folds short to power into P0C47. CARB requires the outputs of battery thermal management to be monitored for circuit faults. If the pump actually loses its command, the battery heats up faster under load and the system reduces power. P0C48 is the low counterpart, P0C4D concerns the supply voltage instead.
- What you may notice
- MIL on
- Battery power reduced during long climbs or fast charging
- Likely causes
- LikelyBattery control module software (Ford/Lincoln 2020 hybrids, TSB 20-2293/20-2345)
- PossibleControl wire shorted to battery voltage
- RareControl line interrupted at the pump connector
- 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: €50 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.