P0C48Hybrid/EV Battery Pack Coolant Pump A Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0C48 narrows a fault on the control line of battery coolant pump A down to a signal that stays too low, as caused by a short to ground or a driver output that cannot pull the line up. Ford lists the code for the 2020 Explorer, Police Interceptor Utility and Lincoln Aviator with the hybrid powertrain. Bulletins 20-2293 and 20-2345 group it with P0C49, P0C4A, P0C4B, P0CFF, P2B29 and other pump and battery codes that light the MIL and are stored in the PCM; the cause is the software of the battery energy control module, which is reprogrammed. Other makers, GM for instance, cover the same failure inside the broader code P0C47. CARB requires output components of battery thermal management to be checked for circuit faults. If the pump really stops, battery power is limited.
- What you may notice
- MIL on
- Hybrid system message, battery power possibly limited
- Likely causes
- LikelyBattery control module software (Ford/Lincoln 2020 hybrids, TSB 20-2345)
- PossiblePump control wire shorted to ground
- RareInternal fault in the pump electronics pulling the line low
- 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.