Variable A/C Compressor Control Circuit High
The P06A2 code indicates that the Powertrain Control Module (PCM) has detected a high voltage condition in the variable A/C compressor control circuit. This circuit modulates the compressor displacement to match cooling demand. A high voltage reading suggests a short to power, a faulty compressor control solenoid, or an issue with the PCM itself. This can lead to improper A/C operation and potential compressor damage.
01. Most Common Causes
- Short to power in the control circuit wiring
- Faulty variable A/C compressor control solenoid
- Damaged PCM or internal short
02. Symptoms You Will Notice
- A/C compressor not engaging or running continuously
- Inconsistent or no cooling from A/C system
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve the code and check freeze frame data.
Step 2: Inspect the wiring and connector at the A/C compressor for damage or corrosion.
Step 3: Measure voltage at the compressor control circuit; compare to manufacturer specs.
Step 4: Test the compressor control solenoid resistance; replace if out of range.
Step 5: If wiring and solenoid are good, check for PCM issues or reprogramming.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended as the A/C may not work properly, and continued driving could damage the compressor or other components.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, depending on the cause (wiring repair vs. solenoid replacement).