AutoCodes – GMC – B0689 GMC

B0689 GMC Code - Security System Indicator Circuit Open

Quick Answer

The security indicator is controlled by the Body Control Module (BCM) based on commands from the immobilizer system or the Content Theft Deterrent (CTD) system. Common causes include Faulty Instrument Panel Cluster (IPC), Instrument Panel Cluster (IPC) harness is open or shorted, Instrument Panel Cluster (IPC) 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: B0689 GMC indicates Security System Indicator Circuit Open.
Common causes: Common causes include Faulty Instrument Panel Cluster (IPC), Instrument Panel Cluster (IPC) harness is open or shorted, Instrument Panel Cluster (IPC) 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 936

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 B0689 GMC Description

The security indicator is controlled by the Body Control Module (BCM) based on commands from the immobilizer system or the Content Theft Deterrent (CTD) system. With the ignition OFF, the security indicator is commanded by the CTD system. With the ignition ON, the security indicator is commanded by the immobilizer system. The security indicator is located in the Instrument Panel Cluster (IPC) and is supplied B+ at all times. When the immobilizer or CTD system requests the indicator be commanded ON, the BCM grounds the security indicator control circuit, illuminating the indicator.

OBDII Code B0689 GMC - Security System Indicator Circuit Open - AutoCodes.com — B0689 GMC Code - Security System Indicator Circuit Open

What does this mean?

What are the Possible Causes of the DTC B0689 GMC?

Faulty Instrument Panel Cluster (IPC)
Instrument Panel Cluster (IPC) harness is open or shorted
Instrument Panel Cluster (IPC) circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B0689 GMC?

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 B0689 GMC 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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Need Help with the Code?

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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 B0689 GMC Code

1. What are the common symptoms of OBDII code B0689 GMC (Security System Indicator Circuit Open)?

- The common symptoms include the security system indicator not functioning properly, the security light staying on, or the security system not arming/disarming correctly.

2. What can cause the OBDII code B0689 GMC to trigger?

- This code is usually triggered by a malfunction in the security system indicator circuit, such as a broken wire, loose connection, or a faulty indicator bulb.

3. How can I diagnose the OBDII code B0689 GMC?

- To diagnose this code, you can start by checking the indicator bulb, inspecting the wiring for any damage or loose connections, and testing the circuit for continuity.

4. Is it safe to continue driving with the OBDII code B0689 GMC present?

- While this code may not directly affect the drivability of the vehicle, it is important to address it promptly to ensure the proper functioning of the security system.

5. Can I repair the OBDII code B0689 GMC myself?

- If you have experience with automotive electrical systems, you may be able to repair this issue yourself by locating and fixing the problem in the security system indicator circuit.

6. What are some tips for repairing the OBDII code B0689 GMC?

- Some repair tips include checking and replacing the indicator bulb, inspecting and repairing any damaged wiring, and ensuring all connections are secure.

7. Will resetting the OBDII code B0689 GMC make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue in the security system indicator circuit is not fixed, the code is likely to reappear.

8. Could a dead car battery cause the OBDII code B0689 GMC to appear?

- A dead or disconnected car battery could potentially cause this code to appear if it results in a loss of power to the security system indicator circuit.

9. Can extreme temperatures affect the OBDII code B0689 GMC?

- Extreme temperatures can sometimes cause electrical components to malfunction, which could lead to issues in the security system indicator circuit and trigger this code.

10. Is it necessary to visit a mechanic for OBDII code B0689 GMC diagnosis and repair?

- While it is recommended to seek professional help if you are unsure about diagnosing or repairing this code, experienced DIYers may be able to address the issue themselves with the proper tools and knowledge.