U3556

Hydrogen Tank C Valve Control Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–333 (est.)

Symptoms

Loss of engine power
Malfunction indicator light comes on
Problems starting the engine
Unstable engine operation
Increased fuel consumption

Causes

Open or short circuit in control circuit
Hydrogen tank valve C fault
Problems with the control module
Wiring harness damage
Contact corrosion

How to Fix

Check valve control circuit integrity
Check valve resistance C
Inspect the wiring harness for damage
Check control module
Repair only from an authorized dealer

Related codes

U3555 U3557 U3560