P0D6BA/C Compressor Motor Voltage Sensor A Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0D6B reports that the high-voltage input reading of the electric A/C compressor sits below the plausible range. GM's first-generation Volt (2011–2015) and the 2016 ELR set it at 190 V or less in 30 of 60 samples at 50 ms, checked only with the contactors closed for over a second and fault-free. The 2016–2019 Volt uses below 27.75 V, judged by the compressor and passed on over GMLAN (2019: 4 of 5 s); all are Type B, MIL after two trips. Mitsubishi's Outlander PHEV flags under 205 V for 2 s while the battery shows 220 to 400 V; the 2019/2022 page header mislabels it as high, but the threshold is a low one, and the 2023 list calls it Circuit Low with MIL only. Suspects: compressor inverter, CAN link, hybrid ECU. A real supply loss is P0D6D.
- What you may notice
- Check engine light after two trips (GM) or immediately (Mitsubishi 2023)
- Air conditioning stops cooling
- Battery cooling via refrigerant may be restricted
- Likely causes
- LikelyVoltage measurement in the compressor inverter reads too low
- PossibleFaulty data link between compressor and hybrid controller (named by Mitsubishi)
- RareHybrid or vehicle controller evaluates the value incorrectly
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.