P2E43

Hybrid/EV Electronics Coolant Pump B Control Circuit Low

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–444 (est.)

Symptoms

Hybrid system warning on dashboard
Reduced power or transition to emergency mode
Overheating of electronic components
Noisy operation or lack of operation of the cooling pump

Causes

Electronics cooling pump failure
Open or short circuit in control circuit
Pump control relay problems
Corrosion of contacts or connectors
Malfunction of the hybrid system control unit

How to Fix

Check the pump circuit fuse
Diagnose resistance and voltage in the control circuit
Check the operation of the cooling pump
Inspect connectors and wiring for damage
If necessary, replace the electronics cooling pump

Related codes

P2E42 P2E44 P0A80