P0EA7

Auxiliary Cooling System Performance

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$28–167 (est.)

Symptoms

Overheat warning on dashboard
Reduced engine power
Unstable operation of the cooling system
Turning the fan on at maximum speed
Increase in coolant temperature

Causes

Auxiliary cooling system pump malfunction
Clogged auxiliary system radiator
Problems with temperature sensors
Open or short circuit in control circuit
Low coolant level

How to Fix

Check the level and condition of the coolant
Diagnose the operation of the auxiliary cooling pump
Check the integrity of electrical circuits and connectors
Clean or replace the auxiliary system radiator
Test temperature sensors

Related codes

P0EA8 P0EA6 P0128