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

P2D41

A/C Compressor Motor Voltage B Performance

The voltage B feedback of the electric A/C compressor motor does not match the commanded value within tolerance.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 41

Possible causes

  • Voltage feedback drifted high
  • High-resistance contact in connector medium

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 300–2000 €
  • Estimated time: 2–7 h
  • Component: ac compressor motor
  • Component: wiring harness
  • Component: ecm
  • MIL / check engine light
  • limp mode possible

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