P0D69A/C Compressor Motor Voltage Sensor A Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0D69 is a plausibility check: the high voltage that the electric A/C compressor measures at its input should match the traction battery voltage, since both see the same supply. GM's Volt sets it when the two differ by more than 15 V in the 2011 table (35 of 40 samples at 250 ms) and by more than 30 V in the 2016 and 2019 tables (8 of 10 s in 2019), each Type B with MIL after two trips and only with contactors closed and no battery voltage codes active. Mitsubishi's Outlander PHEV uses 20 V for 2 s, with the compressor reading 205 to 415 V, a battery above 15 °C and intake air above 0 °C; the 2023 model lights only the MIL for it. Usual causes are the compressor's internal measurement, the data link carrying its value, or the hybrid controller. Range faults are P0D6A and P0D6B.
- What you may notice
- Check engine light
- Air conditioning weak or switched off
- Often no other noticeable change
- Likely causes
- LikelyDrifting high-voltage measurement inside the electric compressor
- PossibleFault on the data bus that carries the compressor voltage value
- RareHybrid or vehicle controller misjudging the comparison
- RareError in the battery voltage measurement used as reference
- 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.