Engine-CodesGeneric – B1155

B1155 Code - Gauge Control Module Lost Communication With Combination Switch Control Unit

Quick Answer

The B1155 code indicates that there is a communication problem between the Gauge Control Module and the Combination Switch Control Unit in the vehicle. Common causes include Faulty wiring or connectors, Water damage to the control modules, Electrical faults within the system. 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
B1155 indicates Gauge Control Module Lost Communication With Combination Switch Control Unit.
Common causes
Common causes include Faulty wiring or connectors, Water damage to the control modules, Electrical faults within the system.
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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1155 Description

The B1155 code indicates that there is a communication problem between the Gauge Control Module and the Combination Switch Control Unit in the vehicle. The Gauge Control Module is responsible for controlling and monitoring various gauges on the dashboard, such as the speedometer, fuel gauge, and temperature gauge. The Combination Switch Control Unit, on the other hand, is in charge of controlling functions like the turn signals, headlights, and windshield wipers.

OBDII Code B1155 - Gauge Control Module Lost Communication With Combination Switch Control Unit
B1155 Code - Gauge Control Module Lost Communication With Combination Switch Control Unit

Common Causes of B1155

  1. Faulty wiring or connectors
  2. Water damage to the control modules
  3. Electrical faults within the system
  4. Malfunctioning control modules

Symptoms of B1155

  1. Inaccurate readings on the dashboard gauges
  2. Malfunctioning turn signals
  3. Headlights or windshield wipers not working properly
  4. Warning lights illuminated on the dashboard

How to Fix B1155

  1. Inspect the wiring and connectors between the Gauge Control Module and Combination Switch Control Unit for any damage or corrosion.
  2. Check for any loose connections and ensure they are properly secured.
  3. Test the communication between the two modules using a diagnostic tool to identify the exact issue.
  4. Replace any faulty wiring, connectors, or control modules as needed.
  5. Clear the error code from the vehicle's system and test to ensure the communication is restored.

Cost to Fix B1155

The typical repair costs for addressing the B1155 code can vary depending on the extent of the issue and the specific components that need to be replaced. In general, the parts required for this repair could range from $100 to $500, while the labor costs may fall between $150 and $300. Keep in mind that these estimates are approximate, and actual costs can vary based on factors such as the vehicle make and model, location, and the mechanic's labor rates. It's recommended to consult with a professional technician to get an accurate quote for this repair.

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Code B1155 Information for Specific Makes

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 B1155 Code

1. What are the common symptoms of OBDII code B1155?

- Common symptoms include malfunctioning gauges on the instrument cluster, inoperative warning lights, and loss of communication with the combination switch control unit.

2. What can cause the OBDII code B1155 to appear?

- The code B1155 typically appears when there is a communication breakdown between the gauge control module and the combination switch control unit in the vehicle.

3. How can I diagnose the issue related to code B1155?

- Diagnosis involves using a scan tool to retrieve the specific trouble code (B1155) and checking the wiring connections between the gauge control module and the combination switch control unit.

4. What are some repair tips for fixing OBDII code B1155?

- Repair tips include checking and repairing any damaged wiring connections, ensuring proper ground connections, and resetting the fault code using a diagnostic tool after the repair.

5. Can OBDII code B1155 cause any safety concerns?

- While code B1155 itself may not pose immediate safety risks, it can lead to inaccurate gauge readings or warning lights, potentially affecting the driver's ability to monitor critical vehicle functions.

6. Is it possible to drive the vehicle with OBDII code B1155 present?

- It is generally not recommended to drive the vehicle with unresolved OBDII code B1155, as it may result in inaccurate instrument readings and a loss of communication with essential control units.

7. How much does it typically cost to repair OBDII code B1155?

- The cost of repairing OBDII code B1155 can vary depending on the extent of the issue, but it may involve labor costs for diagnosis and repair, as well as potential costs for replacement parts.

8. Can OBDII code B1155 be triggered by a loose fuse or relay?

- Yes, a loose or faulty fuse or relay related to the gauge control module or combination switch control unit can potentially trigger OBDII code B1155 due to disrupted communication.

9. Are there any recalls or technical service bulletins related to OBDII code B1155?

- It is advisable to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins related to OBDII code B1155, as manufacturers may provide guidance on common issues.

10. How can I prevent OBDII code B1155 from reoccurring in the future?

- To prevent the reoccurrence of code B1155, it is essential to regularly inspect and maintain the wiring connections, fuses, relays, and control modules involved in the communication system to ensure proper function.

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