B048E

Auxiliary Heater System Malfunction

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Auxiliary heater does not work
Long time to warm up the interior
Check Engine light comes on

Causes

Temperature sensor malfunction
Wiring Harness Problems
Solenoid valve failure
Malfunction of the heater control unit

How to Fix

Check temperature sensor
Inspect the wiring harness for damage
Check the solenoid valve
Diagnose the heater control unit

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