B1685 - Lamp Dome Input Circuit Failure

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Lamp Dome Switch
  • Lamp Dome Switch harness is open or shorted
  • Lamp Dome Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

Possible symptoms

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

B1685 Description

The Body Control Module (BCM) monitors the Lamp Dome Switch. The BCM sets the OBDII code when the Lamp Dome Switch is not to factory specifications.
OBDII Code B1685 - Lamp Dome Input Circuit Failure - AutoCodes.com

B1685 Information for specific makes

  • B1685 CHRYSLER Left Headlamp Leveling Motor Control Circuit Performance
  • B1685 DODGE Left Headlamp Leveling Motor Control Circuit Performance
  • B1685 JEEP Left Headlamp Leveling Motor Control Circuit Performance
  • B1685 RAM Left Headlamp Leveling Motor Control Circuit Performance

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Related Information

B1685 Comments

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