U0694

Lost Communication With Hybrid/EV Battery Pack Coolant Pump A

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Hybrid/electric system power reduction
Battery overheating
Error message on the instrument panel display
System transition to emergency mode

Causes

Open or short circuit in the pump circuit
Cooling pump malfunction
Problems with connectors or wiring harness
Control module malfunction
Problems in the CAN network

How to Fix

Check fuses and relays associated with the pump
Inspect connectors and wiring harness for damage
Check the functionality of the cooling pump
Scan the CAN network for errors
Repair only from an authorized dealer

Related codes

U0695 U0696 U0100