P2124

Throttle/Pedal Position Sensor/Switch D Circuit Intermittent

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine operation at idle
Jerking when pressing the gas pedal
Check Engine Light Illuminates
Reduced engine power
The car goes into emergency mode

Causes

Damage to the sensor wiring harness
Oxidation of contacts in connectors
Gas pedal position sensor malfunction
Circuit Grounding Problems
ECU malfunction (rare)

How to Fix

Check the condition of the sensor wiring harness and connectors
Clean connector contacts from oxides
Check the resistance of the gas pedal position sensor
Replace the gas pedal position sensor if necessary
Check and restore the integrity of the power supply and grounding circuits

Related codes

P2122 P2123 P2125