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

C0146

Left Front ABS Outlet Solenoid Circuit

The ABS control module has detected an electrical fault in the outlet solenoid for the left front brake circuit. The outlet valve releases brake pressure to the low-pressure accumulator during ABS regulation.

SystemChassis
Typegeneric / SAE
GroupC0
Range / number1 / 46

Possible causes

  • Outlet solenoid coil open or shorted high
  • Internal ABS module fault 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: 300–1500 €
  • Estimated time: 1–4 h
  • Component: abs outlet solenoid
  • Component: abs hydraulic unit
  • Component: abs 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