AutoCodes – Generic – B1160

B1160 Code - Gauge Control Module Lost Communication With Door Multiplex Control Unit

Quick Answer

The Gauge Control Module monitors the Multiplex Integrated Control Unit (MICU). Common causes include Faulty Multiplex Integrated Control Unit (MICU), Faulty Gauge Control Module, Multiplex Integrated Control Unit (MICU) harness is open or shorted. 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: B1160 indicates Gauge Control Module Lost Communication With Door Multiplex Control Unit .
Common causes: Common causes include Faulty Multiplex Integrated Control Unit (MICU), Faulty Gauge Control Module, Multiplex Integrated Control Unit (MICU) harness is open or shorted.
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 5,668

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 Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1160 Description

The Gauge Control Module monitors the Multiplex Integrated Control Unit (MICU). The Gauge Control Module sets the OBDII code when there is no communication with the MICU (Door Lock Switch Message).

OBDII Code B1160 - Gauge Control Module Lost Communication With Door Multiplex Control Unit - AutoCodes.com — B1160 Code - Gauge Control Module Lost Communication With Door Multiplex Control Unit

What does this mean?

What are the Possible Causes of the DTC B1160?

Faulty Multiplex Integrated Control Unit (MICU)
Faulty Gauge Control Module
Multiplex Integrated Control Unit (MICU) harness is open or shorted
Multiplex Integrated Control Unit (MICU) circuit poor electrical connection

How to Fix the DTC B1160?

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 B1160 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 B1160 code?

Need more information on how to fix the B1160 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1160 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1160 Acura — Gauge Control Module Lost Communication With Door Multiplex Control Unit
B1160 Buick — SDM Calibration Mismatch
B1160 Cadillac — SDM Calibration Mismatch
B1160 Chevrolet — SDM Calibration Mismatch
B1160 GMC — SDM Calibration Mismatch
B1160 Honda — Gauge Control Module Lost Communication With Door Multiplex Control Unit

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 B1160 Code

1. What does OBDII code B1160 mean?

B1160 indicates that the gauge control module has lost communication with the door multiplex control unit, which manages various door-related functions.

2. What are the common symptoms of code B1160?

Common symptoms include malfunctioning power door locks, issues with window operation, or the dashboard displaying warning lights related to the door system.

3. What causes code B1160 to appear?

This code is typically caused by a faulty door multiplex control unit, loose or damaged wiring, a blown fuse, or issues with the gauge control module itself.

4. Can a weak battery cause code B1160?

Yes, a weak or failing battery can cause communication issues between modules, potentially triggering code B1160.

5. How is code B1160 diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors between the affected modules, and test the functionality of the door multiplex control unit.

6. Is it safe to drive with code B1160?

It is generally safe to drive, but some door-related functions, like power locks or windows, may not work properly, which could impact convenience and safety.

7. How can I fix code B1160?

Fixing this code may involve repairing or replacing damaged wiring, ensuring module connections are secure, or replacing the faulty door multiplex control unit if needed.

8. Can resetting the ECU clear code B1160?

Resetting the ECU may temporarily clear the code, but it will likely return if the underlying issue isnâ€™t resolved.

9. How much does it cost to repair code B1160?

Repair costs can vary depending on the issue, ranging from $50 for basic wiring repairs to $500 or more if a module replacement is required.

10. Can I fix code B1160 myself?

If you have basic automotive knowledge, you can inspect and repair visible wiring issues. For complex diagnostics or module replacements, professional assistance is recommended.