Powertrain, generic (extended)

P2BD6 Motor Electronics Coolant Pump C Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2BD6 is stored when the control circuit of motor electronics coolant pump C reads higher than the commanded state allows. A short to battery voltage, or a driver stage that reports overcurrent, are the usual triggers; the pump may then keep running or ignore commands. No manufacturer documents P2BD6 publicly. Ford's 2019 hybrid summary shows how fast the pump A counterpart reacts: P0A07 sets after the output driver has signalled an overcurrent for just 0.25 s, which protects the stage early. GM's Volt and ELR tables fold a short to voltage on their equivalent pump line into P0CE9 (16 failures out of 20 checks spaced 250 ms apart, Type B). Ground faults on pump C are P2BD5, an open line P2BD4. A warning and reduced power follow if cooling suffers.

Likely causes

Control wire of pump C shorted to a supply wire in the harness
Pump C drawing excessive current because of an internal electrical fault
Bent or corroded pins in the pump C connector touching each other
Failed output stage in the controlling module

Symptoms

  • Hybrid system or check engine warning
  • Pump C keeps running after the vehicle is switched off, or does not respond at all
  • Power limitation during long climbs or fast driving

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–900
Time0.5–3 h

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

Parts involved

motor electronics coolant pump cwiring harnesshybrid control module

Related codes

P2BD4P2BD5P2BD7P2D0EP0A07P0B3A

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