P0CEC

Hybrid/EV Electronics Coolant Pump A Control Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$44–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Overheating of electronic components
The vehicle goes into emergency mode
Noisy cooling pump

Causes

Short circuit to power in the control circuit
Electronics cooling pump failure
Problems with the wiring harness or connectors
Malfunction of the hybrid system control module
Poor contact in control circuit

How to Fix

Check the pump circuit fuse
Diagnose the condition of the cooling pump
Inspect the wiring harness and connectors for damage
Check the level and condition of the coolant
Test control signals from the control module

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