P2D47 code meaning
Hybrid/EV Battery Pack C Over Temperature
Powertrain system Generic code P2Dxx codes Check engine light
What P2D47 means
With P2D47 the battery controller reports that the third section of a divided traction battery, C, has exceeded its temperature limit. Because neighbouring sections share the same coolant or air supply, a fault confined to one letter usually points to a local cause: a blocked cooling channel, a cold plate that lost contact with its modules, or an air duct obstructed in that area. No manufacturer documents P2D47 publicly. For whole-pack overheating GM's 2011 Chevrolet Volt used P0A7E with a module limit of 73.5 °C, 50 failures in 60 samples, Type A, and skipped the test while a temperature sensor rationality fault was active. California's rule also expects the cooling performance of the battery to be verified. Expect reduced power until the section cools.
P2D47 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2D47
- Check engine or hybrid system warning light
- Less electric power, especially after longer drives
- Battery cooling fan or pump running at high speed
Common causes of P2D47
- Most likelyBlocked cooling channel or air duct serving section C
- PossiblePoor thermal contact between section C modules and the cooling plate (missing or displaced thermal paste/pad)
- Less likelyTemperature sensor in section C reading high
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery pack cBattery thermal managementBattery energy control module
What each part of P2D47 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 47 | The exact fault in that area. |
What to do next
- Note P2D47 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 P2D47
What does P2D47 mean?
P2D47 means "Hybrid/EV Battery Pack C Over Temperature". With P2D47 the battery controller reports that the third section of a divided traction battery, C, has exceeded its temperature limit. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D47?
Drive gently and only to a workshop. With P2D47 the car can go into limp mode (reduced power) to protect itself.
Will P2D47 fail an emissions test?
Yes, it can. P2D47 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 P2D47 to fix?
Difficulty: workshop only. A typical repair takes 1 to 10 hours of work. This is a job for a workshop.
Will P2D47 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.