Engine-Codes - Generic - B1688

B1688 Code - Lamp Dome Input Circuit Short To Ground

- Code Popularity: 14,939 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1688?

  • Faulty Lamp Dome
  • Lamp Dome harness is open or shorted
  • Lamp Dome circuit poor electrical connection
  • Faulty Smart Junction Box (SJB)

|How to Fix the B1688 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 Code B1688?

Labor: 1.0

The cost to diagnose the B1688 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.

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|What are Code B1688 Possible Symptoms?

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

|What Does the B1688 Code Mean?

The Smart Junction Box (SJB) monitors the Lamp Dome Switch. The SJB sets the OBDII code when the Lamp Dome Switch is not to factory specifications.

B1688 Code - Lamp Dome Input Circuit Short To Ground

|Need more Information on the B1688 Code?

Need more information on how to fix the B1688 code? Get Access to Factory Service Manuals

|Code B1688 Information for Specific Makes

|Need Help with the B1688 Code?

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