U354D
Hydrogen Tank B Temperature Sensor 2 Circuit
U354D is an OBD-II diagnostic trouble code meaning: Hydrogen Tank B Temperature Sensor 2 Circuit. Common causes: open or short circuit in the sensor circuit, poor contact in the sensor connector. Estimated repair cost: $50–167.
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
Error U354D by Vehicle Brand
FAQ
What does the U354D code mean?
U354D is an OBD-II diagnostic trouble code that indicates: Hydrogen Tank B Temperature Sensor 2 Circuit
What causes a U354D error code?
The most common causes of U354D include: Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Malfunction of the temperature sensor itself; Wiring harness damage.
How do I fix a U354D diagnostic trouble code?
To fix U354D: Check the integrity of the wiring to the sensor. Inspect connectors for corrosion or damage. Check sensor resistance (compare with specifications). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U354D?
Do not drive — repair immediately
How much does it cost to fix U354D?
The estimated repair cost for U354D is $50–167. Actual cost depends on your vehicle, location, and labor rates.
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