CC
CarCodeFix
P0120High Priority

Throttle Pedal Position Sensor/Switch A Circuit Malfunction

Category: Powertrain• Fuel and Air Metering

6 articles · 3 makes affected

What is P0120?

Throttle Position Sensor (TPS) Circuit Malfunction. Problem with the TPS circuit, preventing the ECM from accurately determining throttle position.

Symptoms You May Notice

  • ●Check engine light
  • ●Poor acceleration
  • ●Engine stalling
  • ●Erratic idle
  • ●Transmission shifting issues

How to Fix It

  • ●Replace throttle position sensor ($100-$300, intermediate)
  • ●Replace throttle body ($300-$800, intermediate)
  • ●Repair wiring harness ($100-$350, intermediate)

Owner Statistics

Based on 4,522 real owner discussions • 225 confirmed solutions

Dataset (4,522 records)
$1,277
Average Repair Cost
5%
Success Rate
25%
DIY Repairs
4,522
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