P2CF5

Hybrid/EV Battery Pack Coolant Pump B Stuck/Stalled

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–444 (est.)

Symptoms

Reduced vehicle power
Battery overheat warning on dashboard
Increased noise from the cooling pump
The vehicle goes into emergency mode
Reduced range of an electric vehicle

Causes

Pump bearings jamming
Pump motor malfunction
Pump power problems
Cooling system is dirty or clogged
Open or short circuit in control circuit

How to Fix

Check the level and condition of the coolant
Diagnose the electrical circuit of the pump
Check fuses and pump relays
Replace faulty cooling pump
Flush the battery cooling system if necessary

Related codes

P2CF4 P2CF6 P0AFA