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!

Chassis generic / SAE

C0730

Electric Power Steering Motor Position Sensor Circuit

The EPS motor position sensor (resolver/Hall) reports an implausible or missing signal.

SystemChassis
Typegeneric / SAE
GroupC0
Range / number7 / 30

Possible causes

  • Position sensor failed high
  • Connector corroded medium

Symptoms

  • ABS warning light on
  • ESC/stability control deactivated
  • Possible reduced brake assist
  • Speedometer may behave erratically

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 300–1400 €
  • Estimated time: 1.5–4 h
  • Component: eps motor position sensor
  • Component: eps control module

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