P0D68A/C Compressor Motor Voltage Sensor A Circuit
- Generic OBD-II code · Powertrain
- How the car detects it
- An electric A/C compressor in a hybrid or EV runs its motor from the high-voltage battery through an inverter in the compressor housing, and a sensor there measures the incoming high voltage. P0D68 is the general circuit code for that sensor: its signal is missing or unusable as a whole, without a specific low or high reading. No manufacturer documents P0D68 publicly. GM (Volt) and Mitsubishi (Outlander PHEV) monitor the same sensor but use P0D69 for plausibility against the battery voltage and P0D6A/P0D6B for out-of-range values. CARB requires electronic A/C components to be monitored where they affect engine control or other diagnostics. In practice the compressor controller stops the compressor when it cannot trust its input voltage, so cabin cooling and any refrigerant-based battery cooling are lost.
- What you may notice
- Air conditioning does not cool
- Warning message or warning light, depending on the vehicle
- Battery cooling via refrigerant may be limited
- Likely causes
- LikelyVoltage measurement inside the electric compressor's inverter failed
- PossibleCompressor reports its sensor value over a faulty data link
- RarePoor high-voltage connection at the compressor
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.