AutoCodes – Generic – B0689

B0689 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 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 1,317

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

What does this mean?

What are the Possible Causes of the DTC B0689?

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?

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 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.

Need more information about the B0689 code?

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Need Help with the Code?

Get the B0689 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0689 Buick — Security System Indicator Circuit Open
B0689 Cadillac — Security System Indicator Circuit Open
B0689 Chevrolet — Security System Indicator Circuit Open
B0689 GMC — Security System Indicator Circuit Open
B0689 Hummer — Security System Indicator Circuit Open
B0689 Pontiac — Security System Indicator Circuit Open
B0689 Saturn — Security System Indicator Circuit Open

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 Code

1. What does the OBDII code B0689 mean?

Code B0689 indicates an issue with the Security System Indicator Circuit, specifically that the circuit is open or not functioning properly.

2. What are the common symptoms of B0689?

Symptoms may include the security system indicator light not illuminating, the vehicle failing to start, or intermittent security system malfunctions.

3. What causes the B0689 code to appear?

Common causes include a faulty security indicator bulb, damaged or corroded wiring, a malfunctioning Body Control Module (BCM), or a loose connection in the circuit.

4. Can I drive my car with the B0689 code?

While the vehicle may still be drivable, the security system may not function properly, leaving the car vulnerable to theft or causing starting issues.

5. How is the B0689 code diagnosed?

A technician will typically inspect the security indicator circuit, check for continuity in the wiring, test the bulb, and verify BCM functionality using a diagnostic scanner.

6. How can I fix the B0689 code?

Repairs may involve replacing a burned-out indicator bulb, repairing or replacing damaged wiring, securing loose connections, or reprogramming or replacing the BCM if necessary.

7. How much does it cost to fix the B0689 code?

The cost varies depending on the root cause but can range from $50 to $300 for minor fixes like bulb or wiring replacement, and up to $1,000 or more if the BCM requires replacement.

8. Can I reset the B0689 code without repairs?

Clearing the code without addressing the underlying issue is not recommended, as the problem will likely reoccur and may lead to further complications.

9. What tools are needed to troubleshoot the B0689 code?

You may need a multimeter for checking circuit continuity, a diagnostic scanner to read and clear codes, and basic tools for inspecting and repairing wiring or components.

10. Could a dead battery trigger the B0689 code?

Yes, a weak or dead battery can cause voltage issues in the security system circuit, potentially triggering the B0689 code.