Powertrain, generic · Hybrid propulsion

P0D6E A/C Compressor Motor Voltage A High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D6E means the high voltage supplied to the electric A/C compressor motor is above what the compressor is built to accept, as opposed to a sensor circuit reading too high (P0D6A). No manufacturer documents P0D6E publicly. GM handles the situation its own way: the 2011–2015 Volt and 2016 ELR compressor sets P0D6A at 450 V or more and a separate maker code, P1ECA, for a single peak of 480 V; Mitsubishi's Outlander PHEV treats over 415 V for 2 s as P0D6A. Real overvoltage is rare because the traction battery clamps the bus; possible triggers are spikes during charging or regeneration, a faulty charger or converter, or a misreading inverter. The compressor usually shuts down to protect its power stage. CARB covers such inputs under hybrid thermal-management monitoring.

Likely causes

Voltage measurement in the compressor inverter reads too high
Voltage spikes on the high-voltage bus during charging or regeneration
Charger or DC/DC converter regulating the bus voltage incorrectly

Symptoms

  • Air conditioning switches off
  • Possibly further high-voltage codes
  • Warning message depending on the vehicle

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time1–5 h

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

Parts involved

ac compressor motorwiring harnessac compressor module

Related codes

P0D6DP0D6AP0D69P0D6F

References: law.cornell.edu, gsi.ext.gm.com, mitsubishitechinfo.com.