P2D47Hybrid/EV Battery Pack C Over Temperature
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Check engine or hybrid system warning light
- Less electric power, especially after longer drives
- Battery cooling fan or pump running at high speed
- Likely causes
- 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)
- RareTemperature sensor in section C reading high
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.