• Check engine light is on
• Erratic vehicle behavior
• Loss of certain vehicle functions
• Faulty or damaged wiring
• A malfunctioning control module
• Problems with the CAN bus network
CAN: Controller Area Network, a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
ECU: Electronic Control Unit, a generic term for any embedded system that controls one or more of the electrical systems or subsystems in a vehicle.
• U0100
• U0121
This code means that the car's computer is having trouble talking to one of the car's parts. It's like when your phone can't connect to the Wi-Fi.
The U0535 code indicates a communication issue between the vehicle's control modules.
U0535 is a network communication code that suggests a lost communication with a specific module in the vehicle's Controller Area Network (CAN) bus system. This can affect the vehicle's ability to communicate data between different modules.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the CAN bus network for proper communication
• Repair or replace damaged wiring
• Replace the faulty control module
• Clear the code and test drive the vehicle
• OBD-II scanner
• Multimeter
• Wiring diagram
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular vehicle maintenance
• Inspect wiring for wear and tear
• Keep software updated
Communication Error
• Avoid driving long distances until repaired
• Consult a professional mechanic
• Do not ignore the check engine light
Check with your vehicle's manufacturer for warranty coverage on electronic components.
This code has been more prevalent with the increase of electronic control modules in modern vehicles.
Moderate – While the vehicle may still operate, it can lead to further issues if not addressed.
Ignoring this code could lead to safety issues or further damage to the vehicle.
• Vehicle stationary
• Engine running
The affected module is typically located within the vehicle's electronic control unit (ECU) or near the dashboard.
Q: Can I drive with a U0535 code?
A: It's possible, but not recommended as it may lead to further issues.
Q: Will the check engine light turn off by itself?
A: The light may turn off if the issue resolves itself, but it's best to have it checked.
