P0C31

Inverter B Cooling System Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Reduced motor power
Warning messages on the dashboard
Inverter overheating
Activation of emergency operation
Increased noise of the cooling system

Causes

Low coolant level
Coolant pump malfunction
Clogged radiator or pipes
Problems with temperature sensors
Cooling fan malfunction

How to Fix

Check the level and condition of the coolant
Diagnose the operation of the cooling system pump
Check the system for leaks
Clean the radiator and cooling pipes
Check temperature sensors and their connections

Related codes

P0C32 P0C33 P0C34