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B1168 Honda Code - Gauge Control Module Lost Communication With PCM

Quick Answer

The B1168 code for Honda vehicles indicates that the Gauge Control Module (GCM) has lost communication with the Powertrain Control Module (PCM). Common causes include Faulty Gauge Control Module, Faulty Powertrain Control Module, Wiring or connection issues between the modules. 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
B1168 Honda indicates Gauge Control Module Lost Communication With PCM.
Common causes
Common causes include Faulty Gauge Control Module, Faulty Powertrain Control Module, Wiring or connection issues between the modules.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code B1168 Honda Description

The B1168 code for Honda vehicles indicates that the Gauge Control Module (GCM) has lost communication with the Powertrain Control Module (PCM). The GCM is responsible for controlling various gauges on the instrument cluster, such as the speedometer and fuel gauge. The PCM, on the other hand, is the main computer that controls the engine's operation. When communication between these two modules is lost, it can result in inaccurate gauge readings and potentially affect the vehicle's performance.

OBDII Code B1168 Honda - Gauge Control Module Lost Communication With PCM
B1168 Honda Code - Gauge Control Module Lost Communication With PCM

Common Causes of B1168 Honda

  1. Faulty Gauge Control Module
  2. Faulty Powertrain Control Module
  3. Wiring or connection issues between the modules
  4. Software or programming issues
  5. Electrical interference or short circuits

Symptoms of B1168 Honda

  1. Inaccurate or erratic readings on the instrument cluster gauges
  2. Check Engine Light illuminated on the dashboard
  3. Loss of communication with the vehicle's diagnostic system
  4. Engine stalling or hesitation
  5. Reduced fuel efficiency

How to Fix B1168 Honda

  1. Use a diagnostic scanner to retrieve the trouble codes and identify the specific issue.
  2. Inspect the wiring and connections between the Gauge Control Module and Powertrain Control Module for any damage or corrosion.
  3. Check for any loose or disconnected plugs or harnesses.
  4. Test the modules for proper functionality and communication.
  5. Replace any faulty modules or repair any damaged wiring as needed.

Cost to Fix B1168 Honda

The cost of repairing the B1168 code can vary depending on the specific issue and the labor rates in your area. In general, replacing a faulty module or repairing wiring connections can range from $200 to $500, including parts and labor. However, it's important to note that additional diagnostic time may be required to pinpoint the exact cause of the communication loss, which could increase the overall cost. Be sure to consult with a qualified mechanic or auto repair shop for an accurate estimate for your specific vehicle.

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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 B1168 Honda Code

1. What are the common symptoms of OBDII code B1168 in a Honda related to Gauge Control Module communication loss with the PCM?

The common symptoms include malfunctioning gauges on the instrument cluster, flickering or erratic gauge readings, and the illumination of the check engine light.

2. What are some possible causes of the Gauge Control Module losing communication with the PCM in a Honda, triggering OBDII code B1168?

Potential causes include a faulty Gauge Control Module, damaged wiring or connectors between the modules, a malfunctioning PCM, or software issues.

3. How can I diagnose the issue causing OBDII code B1168 in my Honda related to the Gauge Control Module communication loss with the PCM?

Diagnosis typically involves inspecting the wiring and connectors for damage, checking the communication between the modules with a diagnostic tool, and verifying the software versions in each module.

4. Is it safe to continue driving my Honda with OBDII code B1168 related to the Gauge Control Module issue?

It is generally not recommended to drive the vehicle with this issue, as it can lead to inaccurate readings on the instrument cluster and potential safety concerns.

5. Can I repair the Gauge Control Module communication issue causing OBDII code B1168 in my Honda myself, or do I need to visit a mechanic?

While basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, diagnosing and repairing complex issues with the modules may require professional assistance from a mechanic familiar with Honda vehicles.

6. Are there any temporary fixes or workarounds for OBDII code B1168 in a Honda until I can get it repaired?

There are usually no reliable temporary fixes for this issue, and it is best to address the problem promptly to avoid further complications.

7. How much does it typically cost to repair OBDII code B1168 related to Gauge Control Module communication loss with the PCM in a Honda?

The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the Gauge Control Module, repairing wiring, or reprogramming modules, which can range from a few hundred to over a thousand dollars.

8. Will resetting the OBDII code B1168 in my Honda make the issue go away permanently?

Resetting the code may temporarily clear the check engine light, but if the underlying problem causing the communication loss between modules is not fixed, the code is likely to reoccur.

9. Can extreme weather conditions or electrical interference cause OBDII code B1168 in a Honda related to Gauge Control Module communication issues?

Yes, extreme weather conditions or electromagnetic interference can potentially disrupt communication between modules and trigger this OBDII code.

10. Is there a way to prevent OBDII code B1168 from occurring in my Honda in the future after it has been repaired?

Regular maintenance, avoiding water damage to the modules, and ensuring proper electrical grounding can help prevent the recurrence of this communication issue between the Gauge Control Module and PCM.

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