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P10C100 — Electric A/C compressor, control unit – supply voltage too high

Electric A/C compressor, control unit – supply voltage too high. The Taycan, 911 (992), Panamera (971) and Cayenne report this code; below is which control unit sets it on each model and how to read and clear it.

Which models and control units set P10C100

Porsche Taycan

Thermal Management

Porsche 911 (992)

TME (Thermomanagement)

Porsche Panamera (971, 2017–2023)

TME (Thermomanagement)

Porsche Cayenne (9YA)

TME (Thermomanagement)

How to read and clear P10C100

  1. Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
  2. Open STEUER14, pick your car and run a fault scan: every control unit is read, and P10C100 shows with its status, its full description and the freeze frame when the unit stores one.
  3. Fix the cause first, then clear the fault memory and scan again to check it stays away. Reading and clearing fault codes is free on every control unit.

More about fault memory in the manual →

Download STEUER14 — free fault reading

Other codes of the Thermal Management

P0EC900Refrigerant circuit shut-off valve (EAV2) – mechanical fault
P0EE200Refrigerant circuit shut-off valve (EAV3) – mechanical fault
P0EE300Refrigerant circuit shut-off valve (EAV3) – fault
P0EE400Refrigerant circuit shut-off valve (EAV3) – voltage too low
P0EE500Refrigerant circuit shut-off valve (EAV3) – voltage too high
P0EE600Refrigerant circuit shut-off valve (EAV3) – temperature too high
P10C200Electric A/C compressor, control unit – supply voltage too low
P10C300Electric air-conditioning compressor (V470) - control unit, temperature too high
P10C400Electric air-conditioning compressor (V470) - control unit, temperature too low
P10C500Electric A/C compressor, motor – overload protection active
P10C700Electric A/C compressor, motor – starting current too high
P10CD00Solenoid valve for low-temperature circuit upstream of chiller (UVW1) – current too high

All 636 codes of this control unit →

Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.