U0695

Lost Communication With Hybrid/EV Battery Pack Coolant Pump B

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Error message on the dashboard
Elevated battery temperature
The hybrid system may not start

Causes

Open or short circuit in the pump circuit
Cooling pump malfunction
Problems with connectors or wiring harness
Malfunction of the hybrid system control module
Pump power problems

How to Fix

Check fuses and relays associated with the pump
Diagnose the pump control circuit for opens and short circuits
Check connectors for oxidation and damage
Test the performance of the cooling pump
If necessary, replace the cooling pump
Repair only from an authorized dealer

Related codes

U0694 U0696 U0697