Powertrain, generic (extended)

P2D02 Motor Electronics Coolant Pump A Underspeed

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

With P2D02 the controller sees pump A of the motor electronics cooling loop turning, but clearly below its target speed for longer than allowed. The rotor is not locked, which separates it from P2D00; a stiff bearing, deposits on the impeller, cold and thick coolant or a supply that sags under load are therefore more likely than a dead motor. Ford names P2D02 in the 2020 Escape HEV bulletin 20-2221 (BECM) and in the PCM-based bulletins 20-2293/20-2345 for the hybrid Explorer, Aviator and Police Interceptor Utility: with the coolant level confirmed, new software resolved the lamp. Ford's 2024 summary keeps underspeed as a separate pump fault type (B2), checked over 5 s with at least 11 V. Excess speed is P2D01. Less flow lets the inverter warm up and may limit power.

Likely causes

Stiff bearing or deposits on the impeller of pump A
Control software strategy (Ford 2020 hybrids, fixed by reprogramming)
Voltage drop on the pump feed or ground under load
Wrong, contaminated or aged coolant raising viscosity at low temperature

Symptoms

  • Malfunction indicator lamp on
  • Higher inverter or motor electronics temperatures in live data
  • Power limitation under sustained load

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–900
Time0.4–3 h

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

Parts involved

motor electronics coolant pump apower electronics coolant loop

Related codes

P2D00P2D01P2D03P2D07P2D0CP0C73

References: static.nhtsa.gov, static.nhtsa.gov, fordservicecontent.com, law.cornell.edu.