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 thinks the fuel door is open when it shouldn't be. It's like when you leave the fridge door open and the light stays on.
The vehicle's computer detects that the sensor or switch indicating the fuel fill door is open is stuck in the 'on' position.
The P04CD code is triggered when the Powertrain Control Module (PCM) detects that the fuel fill door open request sensor or switch is stuck in the 'on' position. This could be due to a malfunctioning sensor, a wiring issue, or a faulty switch.
• Check Engine Light is on
• Fuel fill door warning indicator is active
• Inability to close the fuel fill door properly
• Faulty fuel fill door sensor
• Wiring issues in the sensor circuit
• Faulty fuel fill door switch
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Inspect the fuel fill door and sensor for physical damage.
• Check the wiring and connectors for any signs of damage or corrosion.
• Test the fuel fill door sensor and switch for proper operation.
• Replace the faulty fuel fill door sensor.
• Repair or replace damaged wiring or connectors.
• Replace the faulty fuel fill door switch.
• OBD-II scanner
• Multimeter
• Screwdriver set
$50 - $200
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect the fuel fill door and sensor.
• Keep the fuel fill area clean and free of debris.
• Ensure proper closure of the fuel fill door after refueling.
Sensor Issue
• Check if the fuel fill door is properly closed.
• Avoid forcing the fuel fill door open or closed.
Check with your vehicle manufacturer for specific warranty coverage on sensors and switches.
This code has been reported in vehicles with electronic fuel door systems, especially in models with high mileage.
Low – This issue does not affect vehicle drivability but should be addressed to ensure proper fuel system operation.
Driving with a malfunctioning fuel fill door sensor may lead to fuel system issues. Ensure repairs are conducted by a qualified technician.
• Vehicle parked and engine off
• Access to the fuel fill door area
The fuel fill door sensor is typically located near the fuel fill door, inside the fuel filler area.
Q: Can I drive with the P04CD code?
A: Yes, but it's recommended to fix it soon to ensure the fuel system operates correctly.
Q: How do I reset the P04CD code?
A: After fixing the issue, you can use an OBD-II scanner to clear the code.
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