P06A2
Variable A/C Compressor Control Circuit High
A/C compressor control
Generic OBD-II
Low
What it means
P06A2 means the control circuit for the variable-displacement A/C compressor is reading high — an open or high-resistance condition. This is an air-conditioning control fault, so it affects cooling performance rather than how the engine runs: the car drives normally, but the compressor may not vary its output correctly.
Low
Can I keep driving? Yes — this only affects the variable A/C compressor control, so the engine and drivetrain drive normally; you may just notice weak or no air conditioning.
Common symptoms
What you'll notice
- Air conditioning blows warm or cools poorly
- A/C compressor not modulating (stuck at one output)
- Check-engine light on
Common causes
Most likely first
- Faulty variable A/C compressor control valve/solenoidLikely
- Open or high-resistance wiring to the compressor controlCommon
- Corroded or loose connector at the compressor control valveCommon
- Faulty control module driving the circuitLess often
How to diagnose & fix
Work through it in order
- Scan and confirm P06A2, then read freeze-frame.
- Inspect the wiring and connector to the variable compressor control valve for opens or corrosion.
- Measure the control valve's resistance against specification.
- Replace the control valve/solenoid if it is open or out of spec.
- If the wiring and valve are good, check the driver module/PCM output.
FAQ
Quick answers
Is it safe to drive with P06A2?+
Yes — it only affects air-conditioning control, not engine performance or safety. The A/C may just cool poorly until it is fixed.
Can I just clear P06A2?+
It returns whenever the module re-tests the compressor control circuit unless the valve or wiring is repaired.
Related codes
Often seen with P06A2
Read & clear P06A2 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX