U356E

Anode Drain Valve Heater Relay Control Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Possible errors in the EVAP system
Difficulty starting the engine in cold weather
Increased fuel consumption

Causes

Faulty heater relay
Open or short circuit in control circuit
Poor contact in connectors
Valve heating element malfunction
Problems with the engine control unit

How to Fix

Check the integrity of the relay control circuit
Test the functionality of the relay
Check the condition of connectors and contacts
Diagnose the valve heating element
If necessary, replace faulty components

Related codes

U356F U3570 U3571