• Remote keyless entry not working
• Doors not locking/unlocking remotely
• No response from key fob
• Faulty Remote Function Actuator
• Open or shorted wiring in the CAN bus
• Faulty control module
CAN bus: Controller Area Network bus, a vehicle's communication network.
RFA: Remote Function Actuator, a module that controls remote entry functions.
• U0246
• U0248
This code means that your car's computer is having trouble talking to the remote control that opens and closes the doors.
The vehicle's communication network has lost connection with the Remote Function Actuator.
U0247 indicates a loss of communication with the Remote Function Actuator (RFA) module. The RFA is responsible for managing remote keyless entry functions, such as locking and unlocking doors. This code is set when the vehicle's main control module cannot communicate with the RFA over the CAN bus network.
• Check for other communication-related codes.
• Inspect the wiring and connectors to the RFA.
• Test the RFA for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the Remote Function Actuator if faulty.
• Reprogram or replace the main control module if necessary.
• OBD-II scanner
• Multimeter
• Diagnostic software
$150 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect wiring for damage.
• Ensure connectors are secure.
• Avoid moisture exposure to electronic components.
Communication Error
• Try replacing the key fob battery first.
• Ensure no aftermarket devices are interfering with the signal.
Check with your dealer if the RFA module is covered under warranty.
U0247 has been a common code in vehicles with advanced keyless entry systems introduced in the early 2000s.
Moderate – The car is still drivable, but remote functions may be impaired.
Ensure all repairs are performed by a qualified technician to maintain vehicle safety and compliance.
• Vehicle in park with ignition on.
• Use of a diagnostic tool to check communication.
The Remote Function Actuator is typically located near the vehicle's central locking system, often under the dashboard or in the trunk.
Q: Can I still drive my car with this code?
A: Yes, but you might not be able to use remote functions like keyless entry.
Q: Will this code affect my car's performance?
A: No, it mainly affects remote entry functions.
