P06A2: Variable A/C Compressor Control Circuit High

Severity

Medium

System

Computer and Output Circuits

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P06A2 Mean?

P06A2 is a diagnostic trouble code indicating: Variable A/C Compressor Control Circuit High. This code relates to the computer and output circuits system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P06A2

⚠️ Check Engine Light (MIL) illuminated
⚠️ Variable A/C Compressor reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Multiple system malfunctions

Common Causes

🔍 Short to voltage in Variable A/C Compressor wiring harness
🔍 Corroded or water-damaged Variable A/C Compressor connector
🔍 Faulty Variable A/C Compressor outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P06A2 mean?

P06A2 indicates: Variable A/C Compressor Control Circuit High. The vehicle's computer has detected that the Variable A/C Compressor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P06A2?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P06A2 for extended periods may cause additional problems.

How much does it cost to fix P06A2?

Repair costs for P06A2 typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and repair Variable A/C Compressor wiring for short to voltage
🔧 Clean or replace corroded Variable A/C Compressor connector
🔧 Replace faulty Variable A/C Compressor

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P0600 Serial Communication Link P0601 Internal Control Module Memory Checksum Error P0602 Control Module Programming Error P0603 Internal Control Module Keep Alive Memory (KAM) Error P0604 Internal Control Module RAM Error P0605 Internal Control Module Read Only Memory (ROM) Error P0606 Control Module Processor P0607 Control Module Performance P0608 Control Module VSS Output A P0609 Control Module VSS Output B