Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the car's gas pedal sensor. Sometimes it works and sometimes it doesn't, which can make the car act funny when you try to speed up.
The P2124 code is triggered when the Engine Control Module (ECM) detects an intermittent signal from the throttle or pedal position sensor/switch D circuit.
The throttle/pedal position sensor/switch D circuit is responsible for sending the position of the throttle or accelerator pedal to the ECM. An intermittent signal indicates that the sensor is not providing a consistent signal, which can affect engine performance and throttle response.
• Check Engine Light is on
• Poor acceleration
• Unstable idle
• Faulty throttle/pedal position sensor
• Wiring issues such as frayed wires or poor connections
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, second generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the throttle/pedal position sensor for proper operation.
• Replace the throttle/pedal position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain wiring and connectors.
• Ensure throttle body and pedal sensors are clean.
• Perform routine diagnostic checks.
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Have the vehicle inspected by a professional mechanic.
• Do not ignore the Check Engine Light.
Check with your vehicle manufacturer for specific warranty coverage on sensors and related components.
This code has been associated with issues in vehicles using electronic throttle control systems, which became more prevalent in the 2000s.
Moderate – While the vehicle may still be drivable, it can lead to unsafe driving conditions due to unexpected throttle behavior.
Driving with a malfunctioning throttle/pedal position sensor can lead to unsafe driving conditions. Address this issue promptly to ensure vehicle safety.
• Vehicle at operating temperature
• Engine running and throttle being actuated
The throttle/pedal position sensor is typically located on the accelerator pedal assembly or the throttle body.
Q: Can I drive with a P2124 code?
A: It's possible, but not recommended as it can cause unpredictable acceleration.
Q: How do I clear a P2124 code?
A: The code can be cleared with an OBD-II scanner after repairs are made, but it may return if the underlying issue is not fixed.
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