Powertrain, generic · Hybrid propulsion

P0D8F Battery Charger A Cooling System Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P0D8F means the cooling of on-board charger A is not keeping the unit within its temperature limits, so the charger has to restrict its function. Mercedes documents the code with failure type 97 for the AMG GLE 53 Hybrid (bulletin LI47.70-P-079963, 2025): AC charging stops after about 15 minutes, the cluster reports AC charging inoperative and severely limited hybrid performance, and alongside P0D8F the charger stores an implausibility between its two coolant temperature sensors. The cause was the low-temperature circuits of power electronics and charger with swapped coolant lines; the remedy is to exchange them, not the charger. Air-cooled chargers, such as in Ford's older plug-in hybrids, report overheating under P0D24 instead. Charger B uses P2DB6.

Likely causes

Low coolant level or air in the charger's cooling circuit
Coolant lines connected to the wrong circuit (Mercedes AMG GLE 53 Hybrid)
Failed coolant pump of the low-temperature circuit
Blocked low-temperature radiator or inactive cooling fan

Symptoms

  • AC charging stops after a short time or runs at reduced power
  • Warning that AC charging is inoperative
  • Hybrid drive performance limited

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–1,500
Time0.5–3 h

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

Parts involved

battery charger abattery charger a cooling

Related codes

P2DB6P0D24P0D67

References: static.nhtsa.gov, fordservicecontent.com, law.cornell.edu.