U0478

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

1. Diagnose the security system using a scanner
2. Check the integrity of the wiring and connections of the H sensor
3. Check the functionality of the sensor H
4. If necessary, replace the faulty sensor
5. Repair only from an authorized dealer

Related codes

Error U0478 by Vehicle Brand