OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

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.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / A0

Possible causes

  • Open in compressor solenoid or wiring high

Symptoms

  • Check engine light on
  • Possible limp mode or no-start
  • Multiple follow-up faults across modules
  • Reset/relearn may be needed after repair

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 120–600 €
  • Estimated time: 0.6–2.5 h
  • Component: variable ac compressor
  • MIL / check engine light

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication