Powertrain, generic (extended)

P2D50 Hybrid/EV Battery Pack L Over Temperature

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Insufficient cooling of section L
Worn or imbalanced modules in section L (see P2CD1, P0BBD)
Temperature sensor of section L reading high

Symptoms

  • Hybrid or EV warning lamp
  • Reduced electric power and regeneration
  • Slower charging

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–4,000
Time1–10 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

hv battery pack lbattery thermal managementbattery energy control module

Related codes

P2D4FP2CD1P0A7EP0BBDP2D46

References: law.cornell.edu, gsi.ext.gm.com, static.nhtsa.gov.