U354C

Hydrogen Tank B Temperature Sensor 1 Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check engine light comes on
Reduced engine power
Unstable engine operation
Problems with hydrogen refueling

Causes

Open or short circuit in the sensor circuit
Hydrogen tank 1 temperature sensor malfunction
Bad contacts in connectors
Wiring harness damage

How to Fix

Check the integrity of the sensor circuit
Check sensor resistance and voltage
Inspect connectors and contacts
If necessary, replace the temperature sensor
Repair only from an authorized dealer

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