B1160 Code - Gauge Control Module Lost Communication With Door Multiplex Control Unit
Quick Answer
The B1160 diagnostic trouble code indicates that the Gauge Control Module has lost communication with the Door Multiplex Control Unit in the vehicle. Common causes include Wiring issues or damaged wiring harness, Loose or corroded electrical connections, Faulty Gauge Control Module. 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 Wiring issues or damaged wiring harness, Loose or corroded electrical connections, Faulty Gauge Control Module.
- 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 B1160 Description
The B1160 diagnostic trouble code indicates that the Gauge Control Module has lost communication with the Door Multiplex Control Unit in the vehicle. The Gauge Control Module is responsible for monitoring and controlling various gauges and indicators on the vehicle's instrument cluster, while the Door Multiplex Control Unit manages various functions related to the vehicle's doors, such as power locks, windows, and mirrors.
Common Causes of B1160
- Wiring issues or damaged wiring harness
- Loose or corroded electrical connections
- Faulty Gauge Control Module
- Malfunctioning Door Multiplex Control Unit
- Software glitches in the communication network
Symptoms of B1160
- Malfunctioning gauges on the instrument cluster
- Issues with power door locks
- Power windows or mirrors not functioning properly
- Dashboard warning lights related to communication errors
- Inability to control certain features related to the doors
How to Fix B1160
- Begin by conducting a thorough diagnostic scan to retrieve the B1160 code and identify the specific modules involved.
- Inspect the wiring harness and connectors for any damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the Gauge Control Module and Door Multiplex Control Unit for proper functionality. Replace any faulty components.
- Reset the system and clear the trouble code to see if the issue has been resolved.
- Conduct a comprehensive test drive to ensure that all gauges, indicators, and door functions are working correctly.
Cost to Fix B1160
The typical repair costs for addressing the B1160 code can vary depending on the specific components that need to be replaced or repaired. In general, the cost of parts for a new Gauge Control Module or Door Multiplex Control Unit can range from $200 to $500 each, excluding labor. The total repair cost, including parts and labor, may range from $300 to $800 or more.
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Code B1160 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
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 isn’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.
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