U356F

Anode Header Drain Valve Heater Relay Control Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Possible problems with the operation of fuel cells in cold weather
The error may be accompanied by a decrease in power
In some cases, problems with starting the engine in cold weather may occur.

Causes

Drain valve heating relay malfunction
Open or short circuit in control circuit
Wiring Harness Problems
Control unit malfunction
Corrosion of contacts in the circuit

How to Fix

Check the condition of the drain valve heating relay
Check the integrity of the control circuit
Inspect the wiring harness for damage
Check contacts for corrosion
Scan the control unit for additional errors

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