Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is not getting the right signal from the pedal that you press to make the car go faster. It's like when your game controller button doesn't work properly.
The P2122 code is triggered when the Engine Control Module (ECM) detects a low voltage signal from the throttle/pedal position sensor/switch D.
The throttle/pedal position sensor/switch D is responsible for sending the position of the throttle pedal to the ECM. A low circuit signal indicates that the voltage is below the expected range, which can be due to a faulty sensor, wiring issues, or ECM problems.
• Reduced engine power
• Check Engine Light is on
• Poor acceleration
• Faulty throttle/pedal position sensor/switch
• Wiring issues such as shorts or open circuits
• Faulty ECM
Throttle: The mechanism by which fluid flow is managed by constriction or obstruction.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the throttle/pedal position sensor for proper operation.
• Replace the throttle/pedal position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdrivers
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain wiring harnesses.
• Ensure connectors are secure and free of corrosion.
• Perform routine sensor checks during vehicle maintenance.
Sensor Issue
• Avoid driving at high speeds until the issue is resolved.
• Get the vehicle checked by a professional mechanic.
• Do not ignore the Check Engine Light.
Check with your vehicle manufacturer for warranty coverage on sensors and related components.
The P2122 code has been a common diagnostic trouble code (DTC) associated with throttle position sensor issues since the introduction of drive-by-wire systems.
Moderate – It is important to address this issue soon to avoid potential safety risks and further vehicle damage.
Driving with a malfunctioning throttle position sensor can lead to reduced vehicle performance and safety risks.
• Vehicle is in a safe, stationary position.
• Engine is running and warmed up.
The throttle/pedal position sensor is typically located on the throttle body or near the accelerator pedal.
Q: Can I drive my car with a P2122 code?
A: It's not recommended to drive for long periods with this code as it can affect vehicle performance and safety.
Q: How can I reset the P2122 code?
A: After repairs, you can reset the code using an OBD-II scanner, but if the issue isn't fixed, the code will return.
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