P2E47

Hybrid/EV Electronics Coolant Pump B Underspeed

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Overheating of electronic components
Switching to emergency mode
Increased noise from the cooling pump

Causes

Cooling pump malfunction
Problems with electrical wiring to the pump
Low coolant level
Clogged filter or blockage in the cooling system
Pump control unit malfunction

How to Fix

Check the level and condition of the coolant
Diagnose pump electrical connections
Check the functionality of the cooling pump
Clean the cooling system if necessary
Replace the cooling pump if a malfunction is detected

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