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

P05D4

Driver Mode Select Switch B Circuit

A general circuit fault on the driver mode select switch A - the switch with which the driver picks Sport, Comfort, Sand, Snow, etc. The ECU cannot read which mode the driver wants.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / D4

Possible causes

  • Open in switch or harness high

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 80–280 €
  • Estimated time: 0.4–1.4 h
  • Component: driver mode switch b
  • 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