• Check engine light is on
• Vehicle may not start
• Erratic vehicle behavior
• Faulty wiring or connectors
• Defective control module
• Interference or noise in the communication network
ECU: Electronic Control Unit
CAN bus: Controller Area Network bus, a vehicle communication network
• U0100
• U0121
This code means that something went wrong with the way the car's computer talks to one of its parts. It's like if your phone couldn't connect to the internet.
U3517 indicates a communication error between the vehicle's control modules.
The U3517 code is a network communication error, typically involving the Controller Area Network (CAN) bus. It suggests that there is a problem with the data exchange between the vehicle's electronic control units (ECUs).
• Check for other codes
• Inspect wiring and connectors
• Test the control module
• Repair or replace damaged wiring
• Replace faulty control module
• Ensure proper grounding and shielding
• OBD-II scanner
• Multimeter
• Wiring diagram
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Ensure proper installation of aftermarket devices
• Avoid exposure to extreme temperatures
Network Communication Error
• Do not ignore the check engine light
• Consult a professional mechanic
• Avoid DIY repairs if unfamiliar with vehicle electronics
Check with the vehicle manufacturer for warranty coverage on electronic components.
This code has become more common with the increased use of electronic control units in modern vehicles.
Moderate – It should be addressed soon to avoid potential vehicle performance issues.
Ignoring this code may lead to vehicle performance issues, which could affect safety.
• Vehicle ignition on
• Engine running
The control modules are typically located under the dashboard or in the engine compartment.
Q: Can I drive with a U3517 code?
A: It's not recommended to drive for extended periods with this code, as it may lead to further issues.
Q: How do I clear a U3517 code?
A: Use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent it from returning.
