Engine-Codes - Generic - B0685

B0685 Code - Security System Indicator Circuit Short to Ground

- Code Popularity: 887 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the B0685 Code?

  • 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 B0685 Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the B0685 code?

Labor: 1.0

The cost to diagnose the B0685 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B0685 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B0685 Code Mean?

The security LED is controlled by the Body Control Module (BCM) based on commands from the content theft deterrent system. The security LED is located in the dash as part of the ambient light sensor and is supplied ground at all times. When the content theft deterrent system requests the LED be commanded ON, the BCM applies voltage to the security indicator control circuit, illuminating the LED.

Security System Indicator Circuit Short to Ground

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|B0685 code information for specific makes

  • B0685 BUICK Security System Indicator Circuit Short to Ground
  • B0685 CADILLAC Security System Indicator Circuit Short to Ground
  • B0685 CHEVROLET Security System Indicator Circuit Short to Ground
  • B0685 GMC Security System Indicator Circuit Short to Ground

|Need help with a B0685 code?

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