Engine-CodesGMC – B0931 2016 GMC Sierra

B0931 2016 GMC Sierra Code - Compass Module Circuit

Quick Answer

The B0931 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Compass Module Circuit. Common causes include Faulty compass module, Wiring or connector issues in the compass module circuit, Corrosion or damage to the circuit components. 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
B0931 2016 GMC Sierra indicates Compass Module Circuit.
Common causes
Common causes include Faulty compass module, Wiring or connector issues in the compass module circuit, Corrosion or damage to the circuit components.
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 17, 2024
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Code B0931 2016 GMC Sierra Description

The B0931 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Compass Module Circuit. This code indicates that there is a malfunction in the circuit that controls the vehicle's compass module. The compass module is responsible for providing accurate directional information to the driver, helping them navigate and stay on course. When this circuit malfunctions, it can lead to inaccurate or no directional information being displayed on the vehicle's compass.

OBDII Code B0931 2016 GMC Sierra - Compass Module Circuit
B0931 2016 GMC Sierra Code - Compass Module Circuit

Common Causes of B0931 2016 GMC Sierra

  1. Faulty compass module
  2. Wiring or connector issues in the compass module circuit
  3. Corrosion or damage to the circuit components
  4. Electrical interference from other vehicle systems
  5. Software issues in the compass module

Symptoms of B0931 2016 GMC Sierra

  1. Inaccurate or erratic compass readings
  2. Compass display not functioning
  3. Compass direction not changing with vehicle movement
  4. Warning light on the dashboard related to compass module

How to Fix B0931 2016 GMC Sierra

  1. Begin by diagnosing the specific cause of the B0931 code using a diagnostic scanner.
  2. Inspect the wiring and connectors in the compass module circuit for any damage or corrosion.
  3. Test the compass module itself to determine if it is functioning properly.
  4. Replace any faulty components such as the compass module, wiring, or connectors as needed.
  5. Clear the DTC from the vehicle's system and test the compass module to ensure proper functionality.

Cost to Fix B0931 2016 GMC Sierra

The typical repair costs for addressing the B0931 code in a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty compass module or repairing wiring/connectors can range from $200 to $500, including parts and labor. Additional costs may apply if other components need to be replaced or if software issues need to be addressed. It is recommended to consult with a professional mechanic for a more accurate cost estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your local 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 B0931 2016 GMC Sierra Code

1. What does the OBDII code B0931 mean on a 2016 GMC Sierra?

It indicates a malfunction in the compass module circuit, which may affect the vehicle's ability to display or calibrate the compass.

2. What are the common symptoms of code B0931 in a 2016 GMC Sierra?

Symptoms may include the compass display not functioning, incorrect compass readings, or the compass calibration process failing.

3. What causes the B0931 code to appear in a 2016 GMC Sierra?

Common causes include a faulty compass module, wiring issues like a short or open circuit, or a bad connection in the compass module circuit.

4. Can a dead battery cause the B0931 code in a GMC Sierra?

Yes, a weak or dead battery can sometimes trigger this code if it disrupts the compass module's power or memory.

5. How do I diagnose the B0931 code in my GMC Sierra?

Diagnosis involves checking the compass module for damage, inspecting the wiring and connectors for continuity or corrosion, and using a scan tool to monitor the compass module circuit.

6. Is it safe to drive with a B0931 code in my 2016 GMC Sierra?

Yes, it is generally safe to drive, but the compass-related features may not work properly, which could be inconvenient in unfamiliar areas.

7. How do I fix the B0931 code on a 2016 GMC Sierra?

Repairs may include replacing the faulty compass module, repairing damaged wiring, cleaning corroded connectors, or reprogramming the module if necessary.

8. Can I clear the B0931 code without fixing the issue?

You can clear the code with a scan tool, but if the underlying problem isn't resolved, the code is likely to return.

9. Does the B0931 code require module reprogramming after repairs?

In some cases, reprogramming or recalibration of the compass module may be needed after replacing or repairing components.

10. How much does it cost to fix the B0931 code on a GMC Sierra?

The repair cost varies depending on the issue, but replacing a compass module typically costs between $100 and $300, excluding labor.

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