Powertrain, generic · Hybrid propulsion

P0CC1 Drive Motor A Coolant Pump Control Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0CC1 concerns the control circuit of the electric pump that moves coolant through the loop of drive motor A, here specifically an open circuit. GM documents it for the 2013 eAssist hybrids, where the table 13OBDG05C calls the part the motor generator coolant pump: the output driver reports an open-circuit status, and 20 of 25 checks at 250 ms intervals with the vehicle in run/crank and the pump commanded off fail the test, Type B, two trips. Checking in the off state lets the driver detect a missing load without running the pump. A broken wire, a corroded pump connector or an open motor winding are typical causes. With the pump not reachable, the motor generator cannot be cooled actively, so the system is likely to limit assist and charging; the short codes P0CC3 and P0CC4 belong to the same circuit.

Likely causes

Broken control or supply wire to the pump
Corroded or unplugged pump connector
Open winding inside the pump motor

Symptoms

  • Check-engine lamp after two trips
  • Less electric assist and regeneration

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–600
Time0.5–2.5 h

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

Parts involved

drive motor a coolant pumpwiring harnesshybrid control module

Related codes

P0CC2P0CC3P0CC4P0CBDP0C73

References: gsi.ext.gm.com, law.cornell.edu.