U3551

Hydrogen Tank A Valve Enable Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Problems starting the engine
Reduced engine power
Possible hydrogen odor
Errors in the hydrogen storage system

Causes

Open or short circuit in valve circuit
Solenoid valve malfunction
Problems with the control unit
Contact corrosion
Mechanical damage to the wiring harness

How to Fix

Check valve wiring integrity
Test valve resistance
Check power and control signals
Replace faulty valve if necessary
Repair only from an authorized dealer

Related codes

U3550 U3552 U3553