P0123Hyundai Santa-feYears: 1996 - 2026
Throttle/Pedal Position Sensor/Switch A Circuit High Input
Reviewed by ASE Certified Technician
What does this mean?
Code P0123 indicates the TPS 'A' signal voltage is above the maximum expected threshold.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Hyundai Santa-fe models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty throttle position sensor (TPS)
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Symptoms to Watch For
- Check Engine Light is illuminated
- Poor acceleration or sluggish response
- Abnormally high idle speed
- Vehicle enters reduced power / limp mode
- Engine surging or fluctuating RPM