U0478
Invalid Data Received From Restraints System Sensor H
U0478 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Restraints System Sensor H. Common causes: security system sensor h malfunction, damaged wiring or poor contact in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- Airbag light is on
- The security system may not work correctly
- There may be errors in the operation of other safety-related systems
- In some cases there may be no response to changes in the passenger's position
Causes
- Security system sensor H malfunction
- Damaged wiring or poor contact in the sensor circuit
- Problems with the SRS module (airbag control unit)
- Short circuit or open circuit in the sensor circuit
- Software error in SRS module
How to Fix
- Diagnose the security system using a scanner
- Check the integrity of the wiring and connections of the H sensor
- Check the functionality of the sensor H
- If necessary, replace the faulty sensor
- Repair only from an authorized dealer
Related codes
Error U0478 by Vehicle Brand
FAQ
What does the U0478 code mean?
U0478 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Restraints System Sensor H
What causes a U0478 error code?
The most common causes of U0478 include: Security system sensor H malfunction; Damaged wiring or poor contact in the sensor circuit; Problems with the SRS module (airbag control unit); Short circuit or open circuit in the sensor circuit.
How do I fix a U0478 diagnostic trouble code?
To fix U0478: Diagnose the security system using a scanner. Check the integrity of the wiring and connections of the H sensor. Check the functionality of the sensor H. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0478?
Do not drive — repair immediately
How much does it cost to fix U0478?
The estimated repair cost for U0478 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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