P0E1D

Hybrid/EV Battery Pack Coolant Pump B Control Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced performance of the hybrid system
Battery overheating
Increased fuel consumption in hybrid models
Check Engine Light Illuminated
Reducing power or disabling electric mode

Causes

Battery cooling pump malfunction
Problems with the pump's electrical circuit
Faulty relay or fuse
Problems with the hybrid system control unit
Airing the cooling system

How to Fix

Check the operation of the battery cooling pump
Diagnose the electrical circuit of the pump
Check relays and fuses
Eliminate possible air locks in the system
If necessary, replace the cooling pump

Related codes

P0E1C P0E1E P0AFA