Chassis, generic

C060B Left Park Brake Actuator Control Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

On motor-on-caliper parking brakes, a small DC motor drives a gear stage and a spindle that pushes the rear piston; ZF quotes up to 19 kN clamping force with its early swash plate gearbox and up to 25 kN with a two-stage planetary set for heavy vehicles. C060B means the control unit (ESC module or separate EPB module) finds the drive circuit of the left motor open: broken lead, unplugged caliper connector or burnt winding. Hyundai uses its own code C2416 for an open or shorted left motor and fixed 2019–2022 Ioniq hybrids with new connector extension harnesses; GM's PIT5662A, filed under C056D/C056E, asks for no more than 6 Ω per rear circuit measured at the EBCM. No maker publishes C060B itself. The left caliper cannot clamp.

Likely causes

Corroded or loose connector or extension harness at the left caliper
Wire broken where the harness flexes with the suspension
Open winding in the left actuator motor

Symptoms

  • Red park brake lamp flashing or Service Parking Brake message
  • Left rear brake does not apply when the switch is pulled
  • Auto-hold or hill-start assist unavailable

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€40–600
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

left epb actuatorepb control module

Related codes

C060CC060DC060EC060FC0610C0670

References: aftermarket.zf.com, static.nhtsa.gov, static.nhtsa.gov.