P0C47 code meaning
Hybrid/EV Battery Pack Coolant Pump A Control Circuit/Open
Powertrain system Generic code P0Cxx codes Check engine light
What P0C47 means
P0C47 means the controller sees an electrical fault on the line that commands battery coolant pump A. GM's 2019 tables catch open, short to ground and short to power by current: with the pump on, less than 200 mA or more than 3 A on the control line count as failures, with the pump off less than 120 µA; 4 s within 5 s set a Type B code. Porsche reports P0C4700 on the 2015–2017 Cayenne plug-in hybrid (92A), often with the MIL as the only symptom, and blames corroded ground pin 6B, a corroded pump connector or poor wiring. Audi links it on the 2024 Q4 e-tron to corrosion at splice J1 with reduced power. Bentley warns that on 2025–2026 Continental GT and Flying Spur hybrids it can keep the car from switching to ready mode. P0C48 and P0C49 are the low and high variants.
P0C47 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C47
- MIL, frequently the only sign
- Electrical or drive system warning with reduced power
- Vehicle refuses to become ready to drive
Common causes of P0C47
- Most likelyCorroded or painted ground point or corroded pump connector (Porsche Cayenne 92A)
- PossibleCorroded splice or chafed harness in the pump circuit (Audi Q4 e-tron, Bentley)
- PossibleFailed electric coolant pump or its relay
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 P0C47 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. |
| 47 | The exact fault in that area. |
What to do next
- Note P0C47 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 P0C47
What does P0C47 mean?
P0C47 means "Hybrid/EV Battery Pack Coolant Pump A Control Circuit/Open". P0C47 means the controller sees an electrical fault on the line that commands battery coolant pump A. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C47?
Drive gently and only to a workshop. With P0C47 the car can go into limp mode (reduced power) to protect itself.
Will P0C47 fail an emissions test?
Yes, it can. P0C47 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 P0C47 to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0C47 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.