CC
CarCodeFix
P0123High Priority

Throttle/Pedal Position Sensor/Switch A Circuit High Input

Category: Powertrain• Fuel and Air Metering

11 articles · 4 makes affected

What is P0123?

Throttle Position Sensor (TPS) Circuit High Input. The TPS voltage is abnormally high, showing full throttle when partially open or an open circuit.

Symptoms You May Notice

  • ●Check engine light
  • ●High idle speed
  • ●Poor fuel economy
  • ●Reduced power
  • ●Limp mode

How to Fix It

  • ●Replace TPS ($100-$300, intermediate)
  • ●Repair open circuit ($100-$300, intermediate)
  • ●Check connector pins ($50-$150, beginner)

Owner Statistics

Based on 30,866 real owner discussions • 753 confirmed solutions

Dataset (30,866 records)
$762
Average Repair Cost
2%
Success Rate
11%
DIY Repairs
30,866
Data Sources

About This Data

Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.

Issues by Vehicle