U354D

Hydrogen Tank B Temperature Sensor 2 Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$50–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
System transition to emergency mode
Unavailability of some fuel system functions

Causes

Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Malfunction of the temperature sensor itself
Wiring harness damage
Problems with the control unit

How to Fix

Check the integrity of the wiring to the sensor
Inspect connectors for corrosion or damage
Check sensor resistance (compare with specifications)
If necessary, replace the temperature sensor
Repair only from an authorized dealer

Related codes

U354C U354E U3550