U3553

Hydrogen Tank B Valve Control Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Problems starting the engine
Unstable engine idling
Increased fuel consumption

Causes

Open or short circuit in valve control circuit
Hydrogen tank solenoid valve B malfunction
Problems with the control unit
Corrosion or poor contact in connectors
Wiring harness damage

How to Fix

Check valve control circuit integrity
Check resistance and operation of valve B
Inspect connectors and contacts for corrosion
Check the control unit for errors
Repair only from an authorized dealer

Related codes

U3550 U3551 U3552