• Check Engine Light is on
• Intermittent electrical issues
• Failure of certain vehicle functions
• Faulty control module
• Damaged or corroded wiring/connectors
• Network communication failure
CAN: Controller Area Network, a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnostics and reporting.
• U0100
• U0121
This code means that one of the car's computers is having trouble talking to another computer. It's like when two friends can't hear each other on a phone call.
U0485 indicates a communication error between control modules in the vehicle.
The U0485 code is triggered when there is a communication malfunction between the control modules on the vehicle's CAN (Controller Area Network) bus. This can occur if there is a break in the communication line or if one of the modules is not functioning correctly.
• Scan the vehicle for additional trouble codes.
• Inspect wiring and connectors for damage or corrosion.
• Test the control modules for proper operation.
• Repair or replace damaged wiring/connectors.
• Replace faulty control module.
• Update module software if necessary.
• OBD-II scanner
• Multimeter
• Wiring diagram
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain vehicle wiring.
• Avoid exposure of electrical components to moisture.
• Ensure software updates are performed as recommended.
Network Communication Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid DIY repairs unless you have the proper tools and knowledge.
Check with your vehicle manufacturer as some communication issues may be covered under warranty.
U0485 is a relatively uncommon code but has been reported in vehicles with complex electronic systems.
Moderate – It should be addressed soon to avoid potential vehicle function failures.
Driving with a communication error can lead to unexpected vehicle behavior. It is advisable to address the issue promptly.
• Vehicle must be running.
• All electrical systems should be operational.
The control modules are located throughout the vehicle, often under the dashboard or in the engine bay.
Q: Can I drive with a U0485 code?
A: It's possible to drive, but it's not recommended as it can lead to further issues.
Q: How do I clear a U0485 code?
A: Clearing the code requires fixing the underlying issue, then using an OBD-II scanner to reset the system.
