Chassis, generic

C0617 Park Brake Control Module Control Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

C0617 says the supply or control line feeding the parking brake electronics reads too low. Because both caliper motors draw several amps when they clamp, a weak battery, a poor ground or a corroded feed shows up here first. Mitsubishi's ABS unit on the 2023 Outlander PHEV sets C10B7-16 when the ignition feed drops to 10 V or less for about a second and then suspends the parking brake and hill start assist. GM's 2025 EBCM tables stop the motor and block actuation when its voltage stays under 7 V for 700 ms, but they store that as C0616. In the integrated layout described for VDA 305-100 the power stage belongs to the ESC host, so the feed is shared. No maker publishes C0617; charge the battery before chasing it.

Likely causes

Discharged or failing 12 V battery
High resistance in the module ground or power feed
Control or enable line shorted to ground

Symptoms

  • Parking brake warning lamp, often together with other low-voltage messages
  • Parking brake applies slowly or not at all
  • Hill start assist unavailable

Repair estimate

DifficultyEasyDIY possible
Parts and labour€0–300
Time0.3–1.5 h

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

Parts involved

epb control moduleabs control module

Related codes

C0615C0616C0618C0680

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