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

P2612

A/C Refrigerant Distribution Valve A Control Circuit Low

Voltage on the A/C distribution valve A control line is below the expected window. Usually a short to ground or a shorted solenoid coil.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 12

Possible causes

  • Control wire shorted to ground high
  • Internal short in the valve solenoid medium
  • Connector pins corroded - high contact resistance low

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • Estimated cost: 150–1200 €
  • Estimated time: 0.8–3.5 h
  • Component: ac distribution valve a
  • Component: valve solenoid
  • Component: wiring harness
  • 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