Engine-CodesAcura – B1168 Acura

B1168 Acura Code - Gauge Control Module Lost Communication With PCM

Quick Answer

The B1168 diagnostic trouble code for Acura indicates that there is a communication problem between the Gauge Control Module (GCM) and the Powertrain Control Module (PCM). Common causes include Faulty Gauge Control Module, Faulty Powertrain Control Module, Wiring issues or poor connections. 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 Acura indicates Gauge Control Module Lost Communication With PCM.
Common causes
Common causes include Faulty Gauge Control Module, Faulty Powertrain Control Module, Wiring issues or poor connections.
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 Aug 18, 2024
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Code B1168 Acura Description

The B1168 diagnostic trouble code for Acura indicates that there is a communication problem between the Gauge Control Module (GCM) and the Powertrain Control Module (PCM). The GCM is responsible for controlling various gauges on the instrument cluster, such as the speedometer, tachometer, fuel gauge, and temperature gauge. The PCM, on the other hand, is the main computer that manages the engine and transmission functions.

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

Common Causes of B1168 Acura

  1. Faulty Gauge Control Module
  2. Faulty Powertrain Control Module
  3. Wiring issues or poor connections
  4. Software glitches or programming errors
  5. Electrical interference or communication bus problems

Symptoms of B1168 Acura

  1. Inaccurate gauge readings
  2. Warning lights flashing on the instrument cluster
  3. Loss of communication with other modules
  4. Engine stalling or running rough
  5. Transmission shifting issues

How to Fix B1168 Acura

  1. Perform a diagnostic scan to confirm the B1168 code and pinpoint the exact cause of the communication issue.
  2. Inspect the wiring harness between the GCM and PCM for any damage or loose connections.
  3. Test the GCM and PCM for proper functionality and replace any faulty modules.
  4. Clear the code from the vehicle's computer and reinitialize the communication between the modules.
  5. Test drive the vehicle to ensure that the gauges are functioning correctly and that the communication issue has been resolved.

Cost to Fix B1168 Acura

The cost of repairing a Gauge Control Module Lost Communication With PCM issue can vary depending on the specific cause of the problem and the labor rates in your area. In general, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates can affect the final cost, so it's best to get a quote from a reputable auto repair shop in your area.

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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 Acura Code

1. What are the common symptoms of OBDII code B1168 in an Acura?

- Common symptoms include the malfunction of the gauge control module, issues with the instrument cluster, and communication errors between the gauge control module and the powertrain control module (PCM).

2. What causes the Gauge Control Module to lose communication with the PCM in an Acura?

- The loss of communication between the Gauge Control Module and the PCM can be caused by wiring issues, faulty connections, a defective gauge control module, or a malfunctioning PCM.

3. How can I diagnose the cause of OBDII code B1168 in my Acura?

- A thorough inspection of the wiring harness, connectors, and components related to the gauge control module and PCM is recommended. Using a diagnostic scan tool to retrieve additional fault codes and data can also help pinpoint the issue.

4. Can a DIY enthusiast repair OBDII code B1168 in an Acura?

- While some basic troubleshooting steps like checking connections and fuses can be performed by DIY enthusiasts, diagnosing and repairing communication issues between modules may require specialized diagnostic equipment and expertise.

5. What are the repair options for resolving OBDII code B1168 in an Acura?

- Repair options may include repairing or replacing damaged wiring, connectors, or components related to the gauge control module and PCM. In some cases, reprogramming or replacing the affected modules may be necessary.

6. Is it safe to continue driving with OBDII code B1168 present in an Acura?

- It is not recommended to drive the vehicle with unresolved communication issues between the gauge control module and PCM, as it can lead to inaccurate gauge readings, potential safety hazards, and further damage to the vehicle's systems.

7. How much does it typically cost to repair OBDII code B1168 in an Acura?

- Repair costs can vary depending on the root cause of the communication issue, the extent of the repairs needed, and whether any components need to be replaced. It is advisable to consult a professional mechanic for an accurate estimate.

8. Can resetting the OBDII code B1168 clear the issue in an Acura?

- Resetting the code may temporarily clear the fault from the system, but if the underlying issue causing the communication error is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem.

9. Are there any recalls or technical service bulletins related to OBDII code B1168 in Acura vehicles?

- It is advisable to check with the manufacturer or a dealership for any relevant recalls or technical service bulletins related to OBDII code B1168 in Acura vehicles, as they may provide valuable information or assistance in resolving the issue.

10. How can I prevent OBDII code B1168 from occurring in my Acura in the future?

- Regular maintenance, including checking and maintaining the integrity of wiring connections, keeping the vehicle's electrical system in good condition, and addressing any warning signs promptly, can help prevent communication issues like OBDII code B1168 from occurring in the future.

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