U354B

Hydrogen Tank A Temperature Sensor 2 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
Incorrect hydrogen temperature readings
Problems with hydrogen refueling
Limitation of fuel system operation

Causes

Open or short circuit in the sensor circuit
Hydrogen tank temperature sensor malfunction
Connection problems or contact corrosion
Control module malfunction
Mechanical damage to system components

How to Fix

Check the integrity of wiring and connections
Test the hydrogen tank temperature sensor
Check contacts for corrosion
Scan the control module for errors
Replace faulty components
Repair only from an authorized dealer

Related codes

U354A U354C U354D