P2D50 code meaning
Hybrid/EV Battery Pack L Over Temperature
Powertrain system Generic code P2Dxx codes Check engine light
What P2D50 means
P2D50 is the last code in the lettered over-temperature series: after P0A7E for section A, or the whole pack if it is undivided, and sections B to K (P2D46 to P2D4F), L is the twelfth section. The deterioration series runs further to N (P2CD3), but sections M and N have no matching heat code in the current lists. No manufacturer documents P2D50 publicly. The logic would follow the parent code, which GM's 2019 table 19OBDG02 runs on the hottest module against 65 °C as a Type A code. Its ageing partner is P2CD1. In service, cell voltages and temperatures of section L are compared with the rest of the pack, and cooling faults are ruled out before any module is changed. CARB requires monitored battery temperature sensors. Power is reduced.
P2D50 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 P2D50
- Hybrid or EV warning lamp
- Reduced electric power and regeneration
- Slower charging
Common causes of P2D50
- Most likelyInsufficient cooling of section L
- PossibleWorn or imbalanced modules in section L (see P2CD1, P0BBD)
- Less likelyTemperature sensor of section L 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 lBattery thermal managementBattery energy control module
What each part of P2D50 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 50 | The exact fault in that area. |
What to do next
- Note P2D50 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 P2D50
What does P2D50 mean?
P2D50 means "Hybrid/EV Battery Pack L Over Temperature". P2D50 is the last code in the lettered over-temperature series: after P0A7E for section A, or the whole pack if it is undivided, and sections B to K (P2D46 to P2D4F), L is the twelfth section. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D50?
Drive gently and only to a workshop. With P2D50 the car can go into limp mode (reduced power) to protect itself.
Will P2D50 fail an emissions test?
Yes, it can. P2D50 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 P2D50 to fix?
Difficulty: workshop only. A typical repair takes 1 to 10 hours of work. This is a job for a workshop.
Will P2D50 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.