Chassis, generic

C052C ABS Pump Motor Control Circuit/Open

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

Open circuit in the ABS pump motor drive: the control unit finds no current path through motor or relay where one should exist. Mitsubishi lists C1051-13 as C052C on the 2023 Outlander PHEV within the same frame as C052B (normal supply, up to 12 s, ABS, ASC, brake and engine lamps after one trip, stability and regenerative braking functions off). Its confirmation drive runs at roughly 50 km/h for about two minutes, so a cleared code may only return on the road. A Bosch patent spots an interruption while the motor is not driven: two resistors bias both terminals to a middle level, and a broken loop drags one terminal down and the other up. Likely causes are a loose connector, burnt brushes or an open winding inside the hydraulic unit.

Likely causes

Loose or corroded connector at the ABS unit
Worn brushes or open winding in the pump motor
Motor relay contact not closing

Symptoms

  • ABS and ESC warning lamps on
  • ABS, traction and stability control switched off
  • Code returns only after a short drive

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–2,000
Time0.5–4 h

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

Parts involved

abs pump motormotor wiring

Related codes

C052BC052DC052EC052F

References: mitsubishitechinfo.com, mitsubishitechinfo.com, static.nhtsa.gov, patents.google.com.