Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer thinks the gas pedal is being pressed too much, even when it isn't.
The P1DFC code indicates that the voltage signal from the pedal position sensor 'B' is higher than the expected range.
The pedal position sensor 'B' is responsible for sending a voltage signal to the engine control module (ECM) to indicate the position of the accelerator pedal. A 'circuit high' condition means that the voltage is higher than the ECM expects, which could be due to a short circuit, a faulty sensor, or wiring issues.
• Check Engine Light is on
• Reduced engine performance
• Unresponsive accelerator pedal
• Faulty pedal position sensor
• Short circuit in the sensor wiring
• Poor electrical connection
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the pedal position sensor.
• Test the pedal position sensor with a multimeter.
• Replace the pedal position sensor if faulty.
• Repair or replace damaged wiring.
• Ensure all electrical connections are secure.
• OBD-II scanner
• Multimeter
• Screwdrivers
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect wiring for damage.
• Ensure connectors are secure.
• Avoid exposure to moisture in the engine bay.
Sensor Issue
• Avoid driving the vehicle if the accelerator is unresponsive.
• Consult a professional mechanic for diagnosis and repair.
Check if the vehicle's warranty covers sensor replacements.
This code has been reported in various models, often linked to faulty sensors or wiring issues.
Moderate – Address the issue soon to avoid potential drivability problems.
Driving with an unresponsive accelerator can be dangerous. Address the issue promptly.
• Vehicle at idle
• Accelerator pedal not pressed
The pedal position sensor is located near the accelerator pedal assembly.
Q: Can I drive with a P1DFC code?
A: It's not recommended as it can affect vehicle performance and safety.
Q: How do I clear the P1DFC code?
A: Fix the underlying issue and use an OBD-II scanner to clear the code.
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