AutoCodes – Chevrolet – U216B Chevrolet

U216B Chevrolet Code - Lost Communication With Rear 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 Rear Object Detection Control Module, Rear Object Detection Control Module harness is open or shorted, Rear 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: U216B Chevrolet indicates Lost Communication With Rear Object Detection Control Module.
Common causes: Common causes include Faulty Rear Object Detection Control Module, Rear Object Detection Control Module harness is open or shorted, Rear 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 673

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U216B Chevrolet 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 U216B Chevrolet - Lost Communication With Rear Object Detection Control Module - AutoCodes.com — U216B Chevrolet Code - Lost Communication With Rear Object Detection Control Module

What does this mean?

What are the Possible Causes of the DTC U216B Chevrolet?

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

How to Fix the DTC U216B Chevrolet?

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 U216B Chevrolet 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.

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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 U216B Chevrolet Code

What does the OBDII code U216B mean for my Chevrolet?

The U216B code indicates a "Lost Communication With Rear Object Detection Control Module," meaning that the vehicle's computer is unable to communicate with the rear object detection system.

What are common symptoms of the U216B code?

Common symptoms include a malfunctioning rear object detection system, warning lights on the dashboard, and possibly issues with parking sensors not working properly.

What could cause the U216B code to trigger?

Possible causes include a faulty rear object detection control module, damaged wiring or connectors, or issues with the vehicle's main computer or network communication.

How can I troubleshoot the U216B code?

Start by checking the wiring and connectors for any damage or corrosion. Then, inspect the rear object detection control module for faults. Using a scan tool can help identify any additional codes or issues.

Is it safe to drive my Chevrolet with the U216B code?

While it may be safe to drive, the lack of a functioning rear object detection system can increase the risk of accidents when reversing. Itâ€™s advisable to have it checked and repaired promptly.

Can I reset the U216B code myself?

You can clear the code using an OBDII scanner, but if the underlying issue is not resolved, the code may reappear. It's important to diagnose and fix the root cause.

What is the typical cost to repair the U216B code?

Repair costs can vary widely depending on the cause. Simple fixes like reconnecting or repairing wiring may cost less, while replacing a control module could be more expensive, ranging from $100 to $500 or more.

Will a faulty rear object detection control module always trigger the U216B code?

Not necessarily. While a faulty module is a common cause, issues such as poor connections or wiring problems can also trigger the code without a module failure.

Can I prevent the U216B code from occurring?

Regular maintenance, including checking wiring and connectors for wear or damage, can help prevent communication issues. Keeping the software updated may also help ensure proper operation of the system.