• Warning light on dashboard
• Erratic vehicle behavior
• Loss of certain vehicle functions
• Faulty control module
• Damaged or corroded wiring/connectors
• Faulty CAN bus network
CAN bus: A vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.
Control Module: A computer in the vehicle that controls various functions.
• U0100
• U0121
This code means that one of the computers in your car is having trouble talking to another computer. It's like when you try to send a message to your friend, but the message doesn't get through.
U0552 indicates a communication error between control modules in the vehicle.
The U0552 code is a network communication error code that signifies a lost communication with the 'A' control module. This typically involves the Controller Area Network (CAN) bus system, which is responsible for the communication between various control modules in the vehicle.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the CAN bus network for proper operation.
• Repair or replace damaged wiring/connectors.
• Reprogram or replace the faulty control module.
• Ensure the CAN bus network is functioning properly.
• OBD-II scanner
• Multimeter
• CAN bus analyzer
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Keep electrical connections clean and dry
• Avoid aftermarket modifications that may affect the CAN bus
Communication Error
• Do not ignore the warning light.
• Consult a professional mechanic if unsure.
• Avoid driving the vehicle if it behaves erratically.
Check with the vehicle manufacturer for warranty coverage on control modules.
U0552 is a relatively common code associated with communication issues in modern vehicles equipped with complex electronic networks.
Moderate – It should be addressed soon to prevent further issues.
Ignoring this code may lead to safety risks or further vehicle damage.
• Vehicle must be in a safe, stationary position.
• Ensure the ignition is in the 'on' position without starting the engine.
The control modules are typically located under the dashboard or in the engine bay.
Q: Can I drive with a U0552 code?
A: It's best to have the issue checked as soon as possible to avoid potential safety risks.
Q: Will a U0552 code clear itself?
A: The code may clear if the issue is resolved, but it's best to use an OBD-II scanner to confirm.
