Chassis, generic

C0615 Park Brake Control Module Control Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

C0615 points at the circuit that feeds or enables the parking brake control electronics, not at a single caliper: it reads as open. Today the parking brake logic often runs as a software block inside the ESC unit (VDA recommendation 305-100), while the host supplies the motor power stage; a few cars keep a separate module. GM's EBCM tables for 2025 trucks show what such a check looks for, filed under C0616: if the motor supply line stays below 2 V for 500 ms during an apply or release, the clamp 30 feed counts as open. Mitsubishi sets C10B7-16 when the feed falls to 10 V or less. No maker publishes C0615 with this meaning; on 2014–2019 GM trucks C0615 is listed beside ride control codes in PIT5307G, which reflects an older GM assignment.

Likely causes

Blown fuse or fusible link in the parking brake power feed
Loose or corroded terminal on the power or enable line at the module
Broken wire between fuse box and module
Internal fault in the module's supply stage

Symptoms

  • Electric parking brake inoperative on both sides
  • Parking brake warning lamp and service message
  • Auto hold and hill start assist unavailable

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€10–900
Time0.3–2 h

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

Parts involved

epb control moduleabs control module

Related codes

C0616C0617C0618C0680

References: gsi.ext.gm.com, komunikacie.uniza.sk, mitsubishitechinfo.com, static.nhtsa.gov.