OBD-II FAULT CODE
P1703

Brake Switch Out Of Self Test Range

Reference information for P1703. 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.

PowertrainSystem
ABS / brake systemCategory
HighSeverity
  • Check Engine light
  • Poor drivability or reduced fuel economy depending on fault
  • 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
  • Scan all modules and record freeze-frame data before clearing codes
  • Check battery voltage and related fuses
  • Inspect wheel speed sensor wiring and tone ring
  • Compare live wheel speed data while spinning wheels safely
  • Repair sensor wiring or replace failed sensor/bearing/tone ring
  • Diagnose pump/module only after sensor circuits pass
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Disclaimer: Information is provided for general guidance only and may not apply to all vehicles. Always consult a qualified technician.