Powertrain, generic · Hybrid propulsion

P0A95 High Voltage Fuse A

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P0A95 means the battery management detects that a fuse in the high-voltage circuit has opened, usually by comparing the voltage before and after the fuse. Several makers document it: Jaguar for the I-PACE battery energy control module, where a shorted high-voltage auxiliary component blows fuses in the junction box and battery module; Porsche for the Taycan as the main high-voltage fuse with a vehicle that will not become ready to drive; Volvo, whose procedure compares the voltage after the fuses with pack voltage; and Audi, which found an intermittent false entry in hard cornering fixed by software. P0E2F and P0E30 cover fuses B and C. Mostly the car cannot be driven until the cause is found.

Likely causes

Short circuit in a high-voltage auxiliary component (e.g. compressor, heater)
Fuse opened after overload or ageing
Faulty voltage measurement or software misdetection in the battery control module

Symptoms

  • Vehicle not ready to drive, propulsion warning
  • MIL or yellow warning lamp
  • Climate compressor or heater inoperative

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€200–15,000
Time1–10 h

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

Parts involved

high voltage fuse

Related codes

P0E2FP0E30P0A0AP0AA6

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.