AutoCodes – Chevrolet – U2163 Chevrolet

U2163 Chevrolet Code - Lost Communication With Left 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 Left Rear Door Module (LRDM), Left Rear Door Module harness is open or shorted, Left 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: U2163 Chevrolet indicates Lost Communication With Left Rear Door Module.
Common causes: Common causes include Faulty Left Rear Door Module (LRDM), Left Rear Door Module harness is open or shorted, Left 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 602

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 U2163 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 U2163 Chevrolet - Lost Communication With Left Rear Door Module - AutoCodes.com — U2163 Chevrolet Code - Lost Communication With Left Rear Door Module

What does this mean?

What are the Possible Causes of the DTC U2163 Chevrolet?

Faulty Left Rear Door Module (LRDM)
Left Rear Door Module harness is open or shorted
Left Rear Door Module circuit poor electrical connection

How to Fix the DTC U2163 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 U2163 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 U2163 Chevrolet Code

1. What are the common symptoms of OBDII code U2163 in a Chevrolet related to lost communication with the left rear door module?

- Common symptoms may include malfunctioning power windows, door locks, interior lights, or other electrical components in the left rear door.

2. What are some possible causes of OBDII code U2163 indicating lost communication with the left rear door module in a Chevrolet?

- Potential causes may include faulty wiring or connectors, a malfunctioning door module, a blown fuse, or issues with the vehicle's main computer system.

3. How can I diagnose the issue causing OBDII code U2163 in my Chevrolet that points to lost communication with the left rear door module?

- You can start by checking the wiring and connectors for any damage or loose connections, inspecting the left rear door module for proper functionality, and testing relevant fuses.

4. Is it safe to continue driving my Chevrolet with OBDII code U2163 indicating lost communication with the left rear door module?

- While the vehicle may still be operable, it is recommended to address the issue promptly to avoid potential safety hazards or further electrical problems.

5. Can I reset the OBDII code U2163 related to lost communication with the left rear door module in my Chevrolet without fixing the underlying issue?

- Resetting the code without addressing the root cause may temporarily clear the error code, but it is likely to reappear until the communication issue with the left rear door module is resolved.

6. What are some repair tips for resolving OBDII code U2163 in a Chevrolet due to lost communication with the left rear door module?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, replacing a faulty door module, or consulting a professional for advanced diagnostics.

7. Are there any common DIY solutions for troubleshooting OBDII code U2163 related to lost communication with the left rear door module in a Chevrolet?

- DIY solutions may include basic checks like inspecting fuses, visually examining wiring, and using a multimeter to test for continuity and proper voltage.

8. How much can I expect to spend on fixing OBDII code U2163 in a Chevrolet related to lost communication with the left rear door module?

- The cost of repairs can vary depending on the specific issue, parts needed, and labor rates, so it is advisable to obtain estimates from reputable automotive professionals.

9. Will fixing OBDII code U2163 in a Chevrolet requiring resolving lost communication with the left rear door module affect other vehicle systems?

- Resolving the communication issue with the left rear door module should primarily address the specific symptoms associated with that system and may not impact other vehicle functions.

10. Is it possible for OBDII code U2163 indicating lost communication with the left rear door module in a Chevrolet to return after repairs?

- If the root cause of the communication issue is not completely resolved, there is a chance that the code may reappear, highlighting the importance of thorough diagnostics and proper repairs.