Powertrain, generic · Hybrid propulsion

P0D6A A/C Compressor Motor Voltage Sensor A Circuit High

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D6A means the electric A/C compressor reports an input voltage higher than the high-voltage system can actually deliver. GM's 2011 Volt table sets it at 450 V or more (30 of 60 samples at 50 ms); the 2016 and 2019 Volt tables use more than 527.25 V, judged by the compressor itself and sent over the data bus (2019: 4 of 5 s). Both are Type B, MIL after two trips. Mitsubishi's Outlander PHEV flags it when the compressor reads above 415 V for 2 s while the battery shows 220 to 400 V; its 2019 and 2022 manuals label the code inconsistently as low and high, but the threshold is a high one. The 2023 model lights the MIL. A real overvoltage is unlikely, so the compressor's measurement or the hybrid controller is the main suspect. The low end is P0D6B, plausibility P0D69.

Likely causes

Voltage measurement in the compressor inverter reading too high
Electric compressor assembly defective
Hybrid controller or data link fault

Symptoms

  • Check engine light
  • Air conditioning stops cooling
  • Driving otherwise normal

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 motor voltage sensor aac compressor module

Related codes

P0D6BP0D69P0D68P0D6CP0D6E

References: gsi.ext.gm.com, gsi.ext.gm.com, mitsubishitechinfo.com, mitsubishitechinfo.com.