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B1685 Jeep Code - Left Headlamp Leveling Motor Control Circuit Performance

- Code Popularity: 894 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1685 Jeep?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Left Headlamp Leveling Motor
  • Left Headlamp Leveling Motor harness is open or shorted
  • Left Headlamp Leveling Motor circuit poor electrical connection
  • Faulty Automatic Headlamp Leveling Module (AHLM)
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How to Fix the DTC B1685 Jeep?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1685 Jeep code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B1685 Jeep Description

The Front and Rear Headlamp Level Sensors monitor changes in the relative distance between the vehicle body and the front or rear suspension members. In vehicles with High Intensity Discharge (HID) Headlamps but without the air suspension system, the sensor circuitry is energized by the Automatic Headlamp Leveling Module (AHLM) and both sensors provide hard wired inputs back to the AHLM. The AHLM uses these sensor inputs as logic for calculating when and how much to adjust the headlamp beams as part of the Automatic Headlamp Leveling feature. The Automatic Headlamp Leveling Module (AHLM) detects a short to voltage, short to ground, or an open on the LIN Lighting circuit.

OBDII Code B1685 Jeep - Left Headlamp Leveling Motor Control Circuit Performance - AutoCodes.com
B1685 Jeep Code - Left Headlamp Leveling Motor Control Circuit Performance

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Code B1685 Jeep comments

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