AutoCodes – Cadillac – B0931 Cadillac

B0931 Cadillac Code - Compass Module Circuit

Quick Answer

The Compass Module uses low-field magnetic sensing to sense vehicle directional and heading information. Common causes include Faulty Compass Module, Compass Module harness is open or shorted, Compass Module circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0931 Cadillac indicates Compass Module Circuit.
Common causes: Common causes include Faulty Compass Module, Compass Module harness is open or shorted, Compass Module circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 278

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0931 Cadillac Description

The Compass Module uses low-field magnetic sensing to sense vehicle directional and heading information. The Diagnostic Trouble Code (DTC) will be set when the Body Control Module Detected a Compass Module internal malfunction.

OBDII Code B0931 Cadillac - Compass Module Circuit - AutoCodes.com — B0931 Cadillac Code - Compass Module Circuit

What does this mean?

What are the Possible Causes of the DTC B0931 Cadillac?

Faulty Compass Module
Compass Module harness is open or shorted
Compass Module circuit poor electrical connection

How to Fix the DTC B0931 Cadillac?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0931 Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 Cadillac Code

1. What does the OBDII code B0931 on a Cadillac mean?

The code B0931 indicates an issue with the Compass Module Circuit, typically related to communication or electrical faults within the compass module.

2. What are common symptoms of the B0931 code on a Cadillac?

Symptoms may include an inaccurate or non-functional compass display, navigation system errors, or intermittent operation of the compass feature.

3. What causes the B0931 Compass Module Circuit code on a Cadillac?

Common causes include wiring issues, a faulty compass module, poor electrical connections, or, in rare cases, a failure in the vehicleâ€™s body control module.

4. How can I diagnose the B0931 code on my Cadillac?

Start by inspecting the wiring and connectors for damage or corrosion. Use a diagnostic scanner to check for related codes and monitor the compass moduleâ€™s performance.

5. Is the B0931 code on a Cadillac serious?

While it may not affect the vehicle's drivability, it can impact navigation and convenience features. Prompt repairs are recommended to restore functionality.

6. Can a blown fuse cause the B0931 code on a Cadillac?

Yes, a blown fuse related to the compass module or navigation system can trigger the B0931 code. Check the fuse panel for any issues.

7. How do I fix the B0931 Compass Module Circuit code on a Cadillac?

Repairs may include replacing damaged wiring, reconnecting loose connectors, or replacing the compass module if itâ€™s defective.

8. Can the B0931 code be cleared without repairs?

Clearing the code without addressing the underlying issue may temporarily remove it, but the problem will likely reoccur until repaired.

9. How much does it cost to repair the B0931 code on a Cadillac?

Costs vary depending on the issue. Wiring repairs may be inexpensive, while replacing the compass module could range from $200 to $500, including labor.

10. Do I need professional help to fix the B0931 code on a Cadillac?

While basic checks like inspecting fuses and wiring can be done at home, diagnosing and repairing module-related issues may require professional expertise.