AutoCodes – Generic – U216A

U216A Code - Lost Communication With Front Object Detection Control Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Front Object Detection Control Module, Front Object Detection Control Module harness is open or shorted, Front Object Detection Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U216A indicates Lost Communication With Front Object Detection Control Module.
Common causes
Common causes include Faulty Front Object Detection Control Module, Front Object Detection Control Module harness is open or shorted, Front Object Detection Control Module circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 5,494
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 15, 2020
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Code U216A Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.
OBDII Code U216A - Lost Communication With Front Object Detection Control Module - AutoCodes.com
U216A Code - Lost Communication With Front Object Detection Control Module

What are the Possible Causes of the DTC U216A?

  • Faulty Front Object Detection Control Module
  • Front Object Detection Control Module harness is open or shorted
  • Front Object Detection Control Module circuit poor electrical connection

How to Fix the DTC U216A?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U216A code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U216A code?

Need more information on how to fix the U216A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U216A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • U216A Buick β€” Lost Communication With Front Object Detection Control Module
  • U216A Cadillac β€” Lost Communication With Front Object Detection Control Module
  • U216A Chevrolet β€” Lost Communication With Front Object Detection Control Module
  • U216A GMC β€” Lost Communication With Front Object Detection Control Module
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U216A Code

1. What are the common symptoms of OBDII code U216A?

- Common symptoms include a malfunction indicator light (MIL) illuminated on the dashboard, loss of front object detection system functionality, and possible issues with other vehicle safety systems.

2. What can cause the OBDII code U216A to trigger?

- The code U216A is typically triggered when there is a communication failure between the vehicle's onboard diagnostic system and the front object detection control module.

3. How can I diagnose the cause of the U216A code?

- Diagnosing the U216A code usually involves checking the wiring and connectors between the vehicle's diagnostic system and the front object detection control module, as well as ensuring that the module itself is functioning properly.

4. What are some possible repair tips for resolving the U216A code?

- Repair tips may include checking for loose or damaged wiring, ensuring all connectors are securely attached, and resetting the diagnostic trouble codes after addressing any identified issues.

5. Can the U216A code be fixed without professional help?

- Depending on the cause of the communication failure, some DIY enthusiasts may be able to resolve the U216A code by checking basic connections and wiring. However, complex issues may require professional diagnosis and repair.

6. Is it safe to drive with the U216A diagnostic trouble code active?

- It is generally recommended to address diagnostic trouble codes promptly to ensure the proper functioning of vehicle safety systems. Driving with the U216A code may result in the front object detection system not working correctly.

7. How much does it typically cost to repair the U216A code?

- The cost of repairing the U216A code can vary depending on the underlying issue causing the communication failure. Costs may include labor charges for diagnosis and repair, as well as any parts that need to be replaced.

8. Are there any recalls related to the U216A code?

- It's advisable to check with the vehicle manufacturer or authorized dealerships to inquire about any recalls or technical service bulletins related to the U216A diagnostic trouble code.

9. Can extreme weather conditions affect the occurrence of the U216A code?

- Extreme weather conditions, such as heavy rain or extreme temperatures, can potentially impact the electrical connections and components related to the front object detection control module, leading to communication issues and triggering the U216A code.

10. How can I prevent the U216A code from reoccurring in the future?

- Regularly inspecting and maintaining the vehicle's electrical connections, keeping them clean and secure, can help prevent communication failures that trigger the U216A code. Additionally, addressing any issues promptly can help prevent the code from reoccurring.

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