U0698

Lost Communication with Coolant Pump E

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Engine overheating
Unstable operation of the cooling system
Check Engine Light Illuminates
Reduced interior heating efficiency
Floating engine speed

Causes

Broken or damaged wires to the pump
Electrical coolant pump malfunction
Problems with the pump connector
Faulty relay or fuse
Problems with the engine ECU

How to Fix

Check the integrity of the pump wires and connectors
Check fuses and relays associated with the pump
Test the operation of the coolant pump
Check power and ground at the pump connector
If necessary, replace the coolant pump

Related codes

U0697 U0699 U0100