P0E3C

Hybrid/EV Battery Coolant Pump Underspeed

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Hybrid system power reduction
Battery overheat warning on dashboard
Increased noise from the cooling pump
System transition to emergency mode
Reduced electric range

Causes

Battery cooling pump malfunction
Pump power problems
Airing the cooling system
Cooling system is dirty or clogged
Malfunction of the hybrid system control unit

How to Fix

Check the level and condition of the coolant
Diagnose the operation of the battery cooling pump
Check the integrity of the electrical connections of the pump
Check fuses and relays associated with the pump
If necessary, replace the battery cooling pump

Related codes

P0E3D P0E3E P0E3F