P0C49 code meaning
Hybrid/EV Battery Pack Coolant Pump A Control Circuit High
Powertrain system Generic code P0Cxx codes Check engine light
What P0C49 means
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.
P0C49 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C49
- MIL on
- Battery power reduced during long climbs or fast charging
Common causes of P0C49
- Most likelyBattery control module software (Ford/Lincoln 2020 hybrids, TSB 20-2293/20-2345)
- PossibleControl wire shorted to battery voltage
- Less likelyControl line interrupted at the pump connector
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 aWiring harnessBms
What each part of P0C49 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| 49 | The exact fault in that area. |
What to do next
- Note P0C49 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 P0C49
What does P0C49 mean?
P0C49 means "Hybrid/EV Battery Pack Coolant Pump A Control Circuit High". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C49?
Drive gently and only to a workshop. With P0C49 the car can go into limp mode (reduced power) to protect itself.
Will P0C49 fail an emissions test?
Yes, it can. P0C49 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 P0C49 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. This is a job for a workshop.
Will P0C49 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.