OBD Codes List

Diagnostic reference · P0124

P0124

Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

System
Fuel and air metering (P code)
Lamp
Check Engine Light
Category
Powertrain - Fuel/Air Metering

What it means

P0124 means Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

Where it lives

For P0124, the sensor sits on the circuit this code reports. The description of P0124 reports a fault at the sensor.

Check these first

  • A loose connector at throttle or pedal position sensor A
  • Chafed wiring on the sensor A circuit
  • A failing sensor A
  • Debris in the throttle body or pedal assembly
  • A poor ground for sensor A

What to do next

  1. Wiggle test the sensor A harness on live data
  2. Inspect the sensor A connector and wiring
  3. Clean the throttle body and pedal assembly
  4. Replace sensor A if the signal drops out
  5. Repair the wiring and clean the ground
  6. Clear the code and retest

Look up another code

Enter a full code or a symptom. Press / to search. How to read a code

Type a code above, or start from a symptom or a common code.

Updated

Generic SAE J2012 definition. Last updated 2026-10-10.