P06A2Variable A/C Compressor Control Circuit High
- 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. P06A2 means the control valve circuit is too high – a short to voltage, so a low-side driver cannot pull to ground; with low-side drivers an open valve coil can also appear as 'high'. No manufacturer document available to us names P06A2 itself; the description follows P06A0 and the Ford EVDC system. Cooling is then weak or absent.
- What you may notice
- A/C cools weakly or not at all
- Code stored
- Likely causes
- LikelyValve control wire shorted to voltage
- PossibleValve coil open (seen as 'high' with low-side drivers)
- PossibleConnector or harness at the compressor damaged
- 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.