AutoCodes – Generic – U1160

U1160 Code - Lost Communications With Driver Door Module

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Driver Door Module (DDM), Driver Door Module harness is open or shorted, Driver 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: U1160 indicates Lost Communications With Driver Door Module.
Common causes: Common causes include Faulty Driver Door Module (DDM), Driver Door Module harness is open or shorted, Driver 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 10,614

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 Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1160 Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1160 is set.

OBDII Code U1160 - Lost Communications With Driver Door Module - AutoCodes.com — U1160 Code - Lost Communications With Driver Door Module

What does this mean?

What are the Possible Causes of the DTC U1160?

Faulty Driver Door Module (DDM)
Driver Door Module harness is open or shorted
Driver Door Module circuit poor electrical connection

How to Fix the DTC U1160?

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 U1160 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 U1160 code?

Need more information on how to fix the U1160 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1160 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1160 Buick — Lost Communications With Driver Door Module
U1160 Cadillac — Lost Communications With Driver Door Module
U1160 Chevrolet — Lost Communications With Driver Door Module
U1160 GMC — Lost Communications With Driver 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 U1160 Code

1. What are the common symptoms of OBDII code U1160 (Lost Communications With Driver Door Module)?

- Common symptoms include issues with power windows, door locks, interior lights, and other driver door-related functions not working properly.

2. What are the possible causes of OBDII code U1160?

- The code U1160 can be triggered by a faulty driver door module, wiring issues, a blown fuse, a loose connection, or a malfunctioning control module.

3. How can I diagnose the reason behind OBDII code U1160?

- Diagnosis involves checking the wiring and connections to the driver door module, inspecting the fuse for the module, and using a scan tool to communicate with the module to determine if it's functioning correctly.

4. What are some repair tips for addressing OBDII code U1160?

- Repair tips include checking and repairing any damaged wiring, ensuring all connections are secure, replacing a blown fuse, and replacing the driver door module if necessary.

5. Can I drive my vehicle with OBDII code U1160 present?

- It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to prevent further problems with the driver door functions.

6. How much does it typically cost to repair OBDII code U1160?

- The cost of repairs can vary depending on the specific cause of the issue. It may range from a simple fix like reconnecting a loose wire to replacing the driver door module, which can be more expensive.

7. Can OBDII code U1160 be reset without fixing the underlying issue?

- While you can clear the code with a scan tool, it will likely reappear if the underlying issue causing the communication loss with the driver door module is not addressed.

8. Are there any DIY solutions for fixing OBDII code U1160?

- DIY solutions may include checking and repairing wiring or connections if you have the necessary tools and expertise. However, more complex issues may require professional diagnosis and repair.

9. How long does it typically take to repair OBDII code U1160?

- The repair time can vary based on the cause of the issue. Simple fixes like reconnecting a wire may take a short time, while replacing a module or extensive wiring repair can take longer.

10. Is OBDII code U1160 a common issue in certain vehicle makes and models?

- This code can be a common issue in vehicles with driver door modules, especially in older models or those that have experienced electrical system problems.