Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's fuel door, which you open to fill up with gas, is not closing properly.
The fuel fill door lock is designed to secure the fuel door, and if it is stuck open, it may cause issues with fuel security or aerodynamics.
The P146A code indicates that the vehicle's onboard computer has detected that the fuel fill door lock mechanism is not functioning correctly and is stuck in the open position. This could be due to mechanical failure, electrical issues, or obstruction.
• Fuel door does not close
• Warning light on the dashboard
• Inability to lock the fuel door
• Mechanical failure of the fuel door lock mechanism
• Electrical issue with the lock actuator
• Obstruction preventing the door from closing
Actuator: A device that moves or controls a mechanism or system.
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosing and reporting.
• Inspect the fuel door for any visible obstructions.
• Check the lock actuator for electrical faults.
• Test the mechanical operation of the fuel door lock.
• Remove any obstructions from the fuel door area.
• Repair or replace the lock actuator if faulty.
• Lubricate the fuel door hinge and lock mechanism.
• Multimeter
• Screwdriver set
• Lubricant spray
$100 - $300
Moderate
• Ford Focus
• Chevrolet Malibu
• Honda Accord
• Regularly clean the fuel door area.
• Lubricate the fuel door hinge periodically.
• Inspect the lock mechanism during routine maintenance.
Mechanical Issue
• Do not force the fuel door closed.
• Seek professional assistance if unsure about repairs.
Check with your vehicle manufacturer as this may be covered under warranty for certain models.
This code has been reported in vehicles with electric or mechanical fuel door locks, particularly in models with advanced security features.
Low – This issue does not affect the drivability of the vehicle but should be addressed to ensure fuel security.
Ensure the vehicle is parked safely and turned off before attempting any repairs. Follow all safety guidelines when working with vehicle components.
• Vehicle parked on a level surface
• Ignition in the 'ON' position
The fuel fill door is typically located on the side of the vehicle, near the rear fender.
Q: Can I drive with a stuck fuel door?
A: Yes, but it is recommended to fix it to prevent fuel theft or damage.
Q: Is this a common problem?
A: It can occur in vehicles with mechanical or electric fuel door locks, especially if not maintained.
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