• Security system malfunction
• Warning lights on the dashboard
• Inability to start the vehicle
• Faulty Vehicle Security Control Module
• Damaged wiring or connectors
• Faulty CAN bus network
CAN bus: A robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other without a host computer.
VSCM: Vehicle Security Control Module, responsible for the vehicle's security systems.
• U0100
• U0140
This code means your car's computer can't talk to the security system. It's like when your phone can't connect to Wi-Fi.
The vehicle's control module has lost communication with the security control module.
U0168 indicates a loss of communication with the Vehicle Security Control Module (VSCM). This communication is essential for the vehicle's security features to function properly. The communication is typically carried over the CAN bus network, and a disruption can lead to this error code.
• Check for other related codes
• Inspect wiring and connectors for damage
• Test the CAN bus network for continuity
• Repair or replace damaged wiring
• Replace the Vehicle Security Control Module
• Re-establish proper communication on the CAN bus
• OBD-II scanner
• Multimeter
• CAN bus tester
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain wiring
• Avoid aftermarket modifications that affect the CAN bus
• Keep software updated
Communication Error
• Do not attempt to start the vehicle repeatedly
• Consult with a professional mechanic
• Avoid tampering with vehicle wiring
Check if the vehicle's warranty covers electronic module replacements.
This code has been more prevalent in vehicles with complex security systems and those with high mileage.
Moderate – Addressing this issue promptly can prevent further security system malfunctions.
Failure to address this issue may lead to vehicle security vulnerabilities.
• Vehicle in park
• Ignition in the 'on' position
The Vehicle Security Control Module is typically located under the dashboard or in the trunk area.
Q: Can I drive my car with code U0168?
A: It's not recommended as it may affect the security features of your vehicle.
Q: Will disconnecting the battery fix code U0168?
A: Disconnecting the battery may temporarily clear the code, but it won't fix the underlying issue.
