U354F
Hydrogen Tank C Temperature Sensor 2 Circuit
Hydrogen Tank C Temperature Sensor 2 Circuit: an electrical fault is present in the circuit.
Hydrogen Tank C Temperature Sensor 2 Circuit: an electrical fault is present in the circuit.
Common causes
- high
Temperature sensor failed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-2200
- low
Gateway module routing CAN messages incorrectly
Less common, but worth ruling out after the more likely causes.
Typical part cost: $220-2200
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for U354F.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for U354F.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for U354F.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does U354F mean?
U354F means "Hydrogen Tank C Temperature Sensor 2 Circuit". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U354F?
temperature sensor failed; gateway module routing can messages incorrectly; can terminating resistor (120 ω) drifted out of spec — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full U354F diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.