• Check engine light is on
• Vehicle may not start
• Erratic vehicle behavior
• Faulty control module
• Wiring issues in the CAN bus
• Software glitch in the module
CAN bus: A robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
ECM: Engine Control Module, a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance.
• U0100
• U0401
This code means that one of the car's computers is having trouble talking to another computer. It's like when two people try to talk but don't understand each other.
U0602 indicates a communication error between control modules.
The U0602 code is set when a control module, such as the Engine Control Module (ECM), is unable to communicate with another module on the Controller Area Network (CAN) bus. This could be due to a data mismatch or a failure in the communication protocol.
• Use an OBD-II scanner to confirm the code
• Inspect wiring and connectors for damage
• Test the communication lines between modules
• Repair or replace damaged wiring
• Reflash or update module software
• Replace the faulty control module
• OBD-II scanner
• Multimeter
• CAN bus diagnostic tool
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain vehicle wiring
• Keep software updated
• Avoid aftermarket modifications that affect the CAN bus
Communication Error
• Have a professional diagnose the issue
• Avoid driving the vehicle until fixed if symptoms are severe
Check vehicle warranty for coverage on electronic components
This code has been more prevalent in vehicles with complex electronic systems.
Moderate – Address soon to avoid potential vehicle performance issues.
Ignoring this code may lead to vehicle performance issues and potential safety hazards.
• Vehicle at operating temperature
• All electrical systems active
The control modules are typically located under the dashboard or in the engine compartment.
Q: Can I drive with a U0602 code?
A: It's not recommended, as it may lead to further issues or erratic vehicle behavior.
Q: Will a U0602 code clear itself?
A: The code may clear temporarily, but the underlying issue needs to be resolved to prevent it from returning.
