AutoCodes – Generic – U2164

U2164 Code - Lost Communication With Right Rear Door Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Right Rear Door Module (RRDM), Right Rear Door Module harness is open or shorted, Right Rear Door 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: U2164 indicates Lost Communication With Right Rear Door Module.
Common causes: Common causes include Faulty Right Rear Door Module (RRDM), Right Rear Door Module harness is open or shorted, Right Rear Door 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 844

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2164 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 U2164 - Lost Communication With Right Rear Door Module - AutoCodes.com — U2164 Code - Lost Communication With Right Rear Door Module

What does this mean?

What are the Possible Causes of the DTC U2164?

Faulty Right Rear Door Module (RRDM)
Right Rear Door Module harness is open or shorted
Right Rear Door Module circuit poor electrical connection

How to Fix the DTC U2164?

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 U2164 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 U2164 code?

Need more information on how to fix the U2164 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2164 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U2164 Buick — Lost Communication With Right Rear Door Module
U2164 Cadillac — Lost Communication With Right Rear Door Module
U2164 Chevrolet — Lost Communication With Right Rear Door Module
U2164 GMC — Lost Communication With Right Rear Door 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 U2164 Code

1. What are the common symptoms of OBDII code U2164 - Lost Communication With Right Rear Door Module?

- Common symptoms include malfunctioning power windows, door locks not working properly, interior lights not functioning, and issues with the right rear speaker in the vehicle.

2. What are some possible causes of OBDII code U2164?

- The code U2164 can be caused by a faulty right rear door module, damaged wiring or connectors leading to the module, or a communication error between the module and the vehicle's main computer system.

3. How can I diagnose OBDII code U2164 at home?

- You can start by checking the wiring and connectors leading to the right rear door module for any visible damage or corrosion. Using an OBDII scanner to retrieve the trouble codes and checking for any additional related codes can also help pinpoint the issue.

4. Can I still drive my vehicle with OBDII code U2164 present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid potential inconvenience or safety hazards associated with malfunctioning door components.

5. How can I repair OBDII code U2164 - Lost Communication With Right Rear Door Module?

- Repair options may include replacing the right rear door module, repairing or replacing damaged wiring or connectors, resetting the communication system, or updating software if required.

6. Will resetting the trouble code make OBDII code U2164 disappear permanently?

- Resetting the trouble code may clear it temporarily, but if the underlying issue causing the code is not fixed, it is likely to reappear. It is essential to diagnose and repair the root cause to prevent the code from coming back.

7. Is it necessary to visit a mechanic for OBDII code U2164 diagnosis and repair?

- While it is possible to diagnose and repair this code at home for those with automotive knowledge and tools, consulting a professional mechanic may be beneficial for a thorough inspection and accurate repair.

8. What are some tips to prevent OBDII code U2164 from occurring again?

- Regularly inspecting the wiring and connectors related to the right rear door module, ensuring they are in good condition, and addressing any issues promptly can help prevent the recurrence of this trouble code.

9. Can extreme weather conditions affect OBDII code U2164?

- Yes, extreme weather conditions can potentially impact the electrical components of the right rear door module, leading to communication issues and triggering code U2164. It is advisable to keep the vehicle protected from harsh weather when possible.

10. Are there any recalls or service bulletins related to OBDII code U2164?

- It is recommended to check with the vehicle manufacturer or authorized dealerships for any recalls or service bulletins related to OBDII code U2164, as there may be specific solutions or updates provided for this issue.