B0685 GMC Code - Security System Indicator Circuit Short to Ground
Quick Answer
The security LED is controlled by the Body Control Module (BCM) based on commands from the content theft deterrent system. Common causes include Faulty Light/Sunload Ambient Sensor, Light/Sunload Ambient Sensor harness is open or shorted, Light/Sunload Ambient Sensor circuit poor electrical connection. 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
- B0685 GMC indicates Security System Indicator Circuit Short to Ground.
- Common causes
- Common causes include Faulty Light/Sunload Ambient Sensor, Light/Sunload Ambient Sensor harness is open or shorted, Light/Sunload Ambient Sensor circuit poor electrical connection.
- 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.
Code B0685 GMC Description
What are the Possible Causes of the DTC B0685 GMC?
- Faulty Light/Sunload Ambient Sensor
- Light/Sunload Ambient Sensor harness is open or shorted
- Light/Sunload Ambient Sensor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B0685 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 B0685 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.
Need more information about the B0685 GMC code?
Need more information on how to fix the B0685 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B0685 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B0685 GMC Code
1. What are the common symptoms of OBDII code B0685 GMC (Security System Indicator Circuit Short to Ground)?
- The common symptoms include the security system indicator not functioning properly, the security light staying on constantly, and possible issues with the vehicle's starting system.
2. What causes the OBDII code B0685 GMC to indicate a Security System Indicator Circuit Short to Ground?
- This code is typically caused by a short circuit in the wiring of the security system indicator circuit, a faulty security system indicator, or a damaged security system module.
3. How can I diagnose the OBDII code B0685 GMC related to the Security System Indicator Circuit Short to Ground?
- To diagnose this issue, you can use a diagnostic scan tool to check for the specific fault code, visually inspect the wiring and connectors for any damage, and test the security system components for proper functionality.
4. Can I still drive my GMC vehicle with the OBDII code B0685 indicating a Security System Indicator Circuit Short to Ground?
- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the security system.
5. What are some repair tips for fixing the OBDII code B0685 GMC related to the Security System Indicator Circuit Short to Ground?
- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty security system indicator or module, and clearing the fault code with a diagnostic tool after completing the repairs.
6. Is it possible to reset the OBDII code B0685 GMC without fixing the Security System Indicator Circuit Short to Ground issue?
- While you can clear the fault code temporarily, it is important to address the underlying issue causing the code to prevent further problems with the security system.
7. Does the OBDII code B0685 GMC affect the overall performance of the vehicle?
- This code may not directly impact the vehicle's performance, but it can cause issues with the security system and potentially affect the starting system if left unresolved.
8. Can a DIY enthusiast fix the OBDII code B0685 GMC related to the Security System Indicator Circuit Short to Ground?
- Depending on your experience and tools available, you may be able to diagnose and repair this issue yourself by following the manufacturer's repair guidelines and utilizing the necessary diagnostic equipment.
9. Are there any recalls or technical service bulletins related to the OBDII code B0685 GMC?
- It is recommended to check with your local GMC dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific fault code for your vehicle.
10. How can I prevent the recurrence of the OBDII code B0685 GMC indicating a Security System Indicator Circuit Short to Ground?
- To prevent this code from recurring, it is essential to properly maintain the security system components, ensure all wiring and connectors are in good condition, and address any electrical issues promptly to prevent shorts.
Discuss the causes and fixes for B0685 GMC OBDII Code
Code B0685 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
