U3568

Q: Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

Anode Multifunction Valve Control Circuit

High severity

Generic electrical fault on the anode multifunction valve. This valve combines shut-off, pressure regulation and recirculation control on the hydrogen side.

Common causes

Valve actuator failed
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $440-3300
Gateway module routing CAN messages incorrectly
Less common, but worth ruling out after the more likely causes.
low
Typical part cost: $440-3300
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First things to check

1Confirm the code with a scan tool and check for additional related codes.
2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does U3568 mean?

U3568 means "Anode Multifunction Valve Control Circuit". It is a generic OBD-II code that points to a fault in the network / communication.

What are the most common causes of U3568?

valve actuator failed; gateway module routing can messages incorrectly; can terminating resistor (120 ω) drifted out of spec — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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