P06A0Variable A/C Compressor Control Circuit
- Generic OBD-II code · Powertrain
- How the car detects it
- Variable-displacement A/C compressors change their swash-plate stroke via an electric control valve: a PWM current sets the crankcase pressure and thus the output. Where the engine module drives this valve (Ford's 'EVDC' compressors 2013–2019), it monitors the circuit; where the climate control module drives it (Hyundai, VW/Audi, GM), faults appear in that module instead. CARB requires monitoring only where the A/C affects engine control. P06A0 is the general circuit fault of the compressor control valve. Ford's service messages for its EVDC compressors (2013–2019) describe it with weak or no cooling, typically from a valve with an open coil or a corroded connector at the compressor; low refrigerant can also mislead the diagnosis. The compressor then runs at minimum stroke or does not cool. Not emission relevant in most cases.
- What you may notice
- A/C cools weakly or not at all
- Code stored, check engine light usually off
- Compressor stays at minimum output
- Likely causes
- LikelyCompressor control valve faulty (coil open)
- LikelyConnector at the compressor corroded or loose, wire open
- PossibleLow or incorrect refrigerant charge misleading the diagnosis
- RareEngine module driver faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.