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Diagnose/P0723
P0723High SeverityTransmission

Output Speed Sensor Circuit High Input

What This Means

The transmission output speed sensor voltage is above maximum threshold. This sensor measures output shaft speed to determine vehicle speed and control shift points.

Common Symptoms

  • Speedometer not working
  • Harsh or delayed shifts
  • Transmission may not shift
  • ABS/traction lights on

Common Causes

  • Failed output speed sensor
  • Damaged wiring
  • Metallic contamination
  • Damaged tone ring
  • Fluid contamination

Estimated Repair Cost

$150 – $700
Parts and labor (varies by vehicle and location)
Difficulty:Advanced

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.