OBD-II FAULT CODE
B2479
BRAKE PARK SWITCH CIRCUIT SHORT TO GROUND
Meaning, symptoms, likely causes, diagnostic checks and repair guidance for B2479.
- Body/accessory warning lamp or feature not working
- ABS/traction light, ABS disabled, possible speedometer or stability-control issues
- Dirty/damaged wheel speed sensor
- Damaged tone ring/bearing
- Wiring fault
- ABS pump/module issue
- Wire shorted to chassis/ground
- Check related fuses, connectors, grounds and switch/module power supply
- Inspect wheel speed sensor wiring and tone ring
- Compare live wheel speed data while spinning wheels safely
- Inspect harness for rubbing/pinch points and check resistance to ground
- Repair sensor wiring or replace failed sensor/bearing/tone ring
- Diagnose pump/module only after sensor circuits pass
- Repair insulation/harness damage or replace internally shorted component
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Disclaimer: Information is provided for general guidance only and may not apply to all vehicles. Always consult a qualified technician.