P06A0
Variable A/C Compressor Control Circuit
A general circuit fault on the control output to a variable-displacement A/C compressor - the ECU cannot vary swash-plate angle and the compressor stays at fixed displacement.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Common causes
Ordered by how often each turns out to be the cause.
- Open in compressor solenoid or wiringCommon
Parts involved
- Variable AC Compressor
P06A0 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.