OBD-II FAULT CODE
B1433

Wiper Brake/Run Relay Circuit Short To Ground

Reference information for B1433. Because this is manufacturer-specific, confirm the exact definition for the vehicle before using the diagnostic guidance below.

Manufacturer-specific code

This code can have different meanings depending on vehicle make, model and year. Treat the definition below as a reference and confirm it with OEM service information before diagnosis or repair.

BodySystem
ABS / brake systemCategory
HighSeverity
  • 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.