OBD-II FAULT CODE
B2478
ANTI THEFT INPUT SIGNAL SHORT TO GROUND
Meaning, symptoms, likely causes, diagnostic checks and repair guidance for B2478.
- Body/accessory warning lamp or feature not working
- Wire shorted to chassis/ground
- Internal component short
- Check related fuses, connectors, grounds and switch/module power supply
- Inspect harness for rubbing/pinch points and check resistance to ground
- Repair insulation/harness damage or replace internally shorted component
Related Codes
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Disclaimer: Information is provided for general guidance only and may not apply to all vehicles. Always consult a qualified technician.