P0CE9

Hybrid/EV Electronics Coolant Pump A Control Circuit/Open

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Hybrid system power reduction
Overheating of electronic components
The car goes into emergency mode
Noise or lack of operation of the cooling pump

Causes

Broken wiring in the pump control circuit
Pump motor malfunction
Relay or fuse problems
Poor contact in connectors
Malfunction of the hybrid system control module

How to Fix

Check fuses and pump relays
Inspect the wiring harness for damage
Check the pump connectors for corrosion and tight connections.
Test the operation of the pump with the ignition on
Check pump parameters via OBD-II scanner

Related codes

P0CEA P0CE8 P0A1A