P0D70A/C Compressor Control Module Internal Temperature Sensor A Circuit
- Generic OBD-II code · Powertrain
- How the car detects it
- The control electronics inside an electric A/C compressor carry a temperature sensor on the processor board, called internal sensor A; the compressor uses it to protect itself and reports the value to the vehicle. P0D70 is the general circuit code for it: the value is missing or invalid without a defined low or high reading. No manufacturer documents P0D70 publicly. GM's Volt and ELR tables only use P0D71 (comparison with other temperatures), P0D72 (below −40 °C) and P0D73 (above 150 or 274 °C) for this sensor. A Hyundai patent on temperature sensors of power electronics lists open connectors, shorts, noise and board faults as the usual origins. As the sensor sits on the module's circuit board, a confirmed fault usually means a new compressor assembly; cooling may be reduced or stop.
- What you may notice
- Air conditioning weak or off
- Battery cooling via refrigerant may be limited
- Warning depending on the vehicle
- Likely causes
- LikelyTemperature sensor or its circuit on the compressor board failed
- PossibleValue not transmitted correctly over the data link
- RareUnstable 12 V supply or ground of the compressor electronics
- 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.