Error code

OBD2 P0124

OBD2P0124
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Throttle/Pedal Position Sensor/Switch 'A' Circuit Intermittent.

Severity

moderateCan drive, but may experience performance issues and should address soon.

Summary

P0124 indicates an intermittent issue with the throttle position sensor (TPS) or accelerator pedal position sensor A circuit.

Symptoms

  • Hesitation or stumbling upon acceleration
  • Unstable idle
  • Illuminated check engine light

Common Causes

  • Faulty TPS sensor
  • Open or shorted TPS circuit
  • Poor electrical connections in the TPS circuit

Diagnosis

  1. Visually inspect the sensor and its wiring for corrosion or broken wires.
  2. Check the throttle body assembly for binding or contamination.
  3. Test the TPS using a multimeter to check voltage readings at idle and wide open throttle positions.
  4. Inspect the TPS circuit wiring for power, ground, and signal continuity.

Fixes

  • Replace faulty TPS sensor

FAQ

What does P0124 mean?

P0124 indicates an intermittent issue with the throttle position sensor (TPS) or accelerator pedal position sensor A circuit.

How do I diagnose P0124?

Diagnose by visually inspecting the TPS and its wiring, checking the throttle body assembly for issues, testing the TPS with a multimeter, and inspecting the TPS circuit wiring.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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