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!

Body generic / SAE

P26DE

Engine Sound Control A Circuit Performance

The sound generator A circuit responds to commands but the resulting acoustic feedback is not as expected. Speaker damage or feedback path noise.

SystemBody
Typegeneric / SAE
GroupP2
Range / number6 / DE

Possible causes

  • Speaker cone damaged or coil shorted high
  • Feedback microphone drifts medium

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • Estimated cost: 150–1000 €
  • Estimated time: 1–3.5 h
  • Component: sound amplifier
  • Component: speaker
  • Component: feedback microphone
  • 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