U069E

Lost Communication with Coolant Heater A

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Interior heating does not work
The engine takes a long time to warm up in cold weather
Check Engine Light Is On
Reduced efficiency of the heating system

Causes

Open or short circuit in the heater circuit
Coolant heater malfunction
Problems with the heater control unit
Wiring harness damage
Poor contact in connectors

How to Fix

Check the integrity of the heater circuit
Check fuses and relays
Inspect connectors and contacts for corrosion
Check the functionality of the heater
Scan the system for other errors

Related codes