C028A

Hand Brake Motor Circuit

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$44–333 (est.)

Symptoms

Parking brake does not engage or release
The parking brake warning light is on with a fault indication
Parking brake locked in one position
EPB error message appears on the display
Extraneous sounds from rear brakes

Causes

Parking brake motor malfunction
Open or short circuit in the electric motor wiring
Oxidation or damage to the engine connector
Mechanical wear or jamming of the drive
Parking brake control module malfunction

How to Fix

Read error codes and check EPB system data with a diagnostic scanner
Check the supply voltage at the parking brake motor connector
Measure the motor winding resistance
Inspect wiring and connectors for damage
Check the mechanical performance of the drive (no jamming)
Replace the electric motor or repair the wiring
After repair, perform EPB calibration via diagnostic scanner

Related codes

C003A C0040 P0571