U354A
Hydrogen Tank A Temperature Sensor 1 Circuit
U354A is an OBD-II diagnostic trouble code meaning: Hydrogen Tank A Temperature Sensor 1 Circuit. Common causes: hydrogen temperature sensor malfunction, open or short circuit in wiring. Estimated repair cost: $133–278.
Symptoms
- Check Engine light comes on
- Engine power limitation
- Possible hydrogen system error messages
- Incorrect hydrogen temperature readings
- The car may go into emergency mode
Causes
- Hydrogen temperature sensor malfunction
- Open or short circuit in wiring
- Poor contact in connectors
- Contact corrosion
- Malfunction of the hydrogen system control unit
How to Fix
- Check the resistance of the temperature sensor
- Inspect wiring and connectors for damage
- Check the power and ground of the sensor circuit
- Scan the control unit for additional errors
- Replace temperature sensor if necessary
- Repair only from an authorized dealer
Related codes
Error U354A by Vehicle Brand
FAQ
What does the U354A code mean?
U354A is an OBD-II diagnostic trouble code that indicates: Hydrogen Tank A Temperature Sensor 1 Circuit
What causes a U354A error code?
The most common causes of U354A include: Hydrogen temperature sensor malfunction; Open or short circuit in wiring; Poor contact in connectors; Contact corrosion.
How do I fix a U354A diagnostic trouble code?
To fix U354A: Check the resistance of the temperature sensor. Inspect wiring and connectors for damage. Check the power and ground of the sensor circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U354A?
Do not drive — repair immediately
How much does it cost to fix U354A?
The estimated repair cost for U354A is $133–278. Actual cost depends on your vehicle, location, and labor rates.
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