P0E1A

Hybrid/EV Battery Pack Coolant Pump B Control Circuit/Open

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Battery overheating
Hybrid system power reduction
Malfunction indicator lights up
Reduced performance of the hybrid system
Noise or lack of operation of the cooling pump

Causes

Pump control circuit open
Cooling pump malfunction
Problems with the control relay
Wiring harness damage
Malfunction of the hybrid system control unit

How to Fix

Check pump circuit fuses
Diagnose the operation of the cooling pump
Check the integrity of the control circuit
Check connectors and contacts
Test the pump control relay

Related codes

P0E1B P0E19 P0E18