• Warning lights on the dashboard
• Loss of certain vehicle functions
• Intermittent electrical issues
• Faulty control module
• Damaged wiring or connectors
• Network communication failure
CAN bus: 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
• U0140
Your car's computer is having trouble talking to one of the parts. It's like when your phone can't connect to Wi-Fi.
This code indicates a communication error between the vehicle's modules.
U0554 is a network communication code indicating a loss of communication with the specific control module over the vehicle's CAN bus network.
• Check for other related codes
• Inspect wiring and connectors for damage
• Test the control module for proper operation
• Repair or replace damaged wiring
• Replace faulty control module
• Update or reprogram the module software
• OBD-II scanner
• Multimeter
• Diagnostic software
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain wiring
• Ensure software is up to date
• Avoid aftermarket electronic modifications
Network Communication Issue
• Have the vehicle inspected by a professional
• Avoid driving if critical systems are affected
Check with the manufacturer for specific warranty coverage on electronic components.
This code has become more common with the increase in vehicle electronics and networked systems.
Moderate – Should be addressed soon to prevent further issues.
Ignoring this code could lead to safety issues if critical systems are affected.
• Vehicle in park
• Ignition on, engine off
The affected module is typically located within the vehicle's dashboard or engine compartment.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to loss of vehicle functions and potential safety issues.
Q: Can I drive with this code?
A: It is not recommended to drive with this code active, especially if critical systems are affected.
