AutoCodes – RAM – B168A RAM

B168A RAM Code - Right Headlamp Leveling Motor Control Circuit Performance

Quick Answer

The Front and Rear Headlamp Level Sensors monitor changes in the relative distance between the vehicle body and the front or rear suspension members. Common causes include Faulty Right Headlamp Leveling Motor, Right Headlamp Leveling Motor harness is open or shorted, Right Headlamp Leveling Motor 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: B168A RAM indicates Right Headlamp Leveling Motor Control Circuit Performance.
Common causes: Common causes include Faulty Right Headlamp Leveling Motor, Right Headlamp Leveling Motor harness is open or shorted, Right Headlamp Leveling Motor 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.

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Code Popularity 612

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B168A RAM 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 B168A RAM - Right Headlamp Leveling Motor Control Circuit Performance - AutoCodes.com — B168A RAM Code - Right Headlamp Leveling Motor Control Circuit Performance

What does this mean?

What are the Possible Causes of the DTC B168A RAM?

Faulty Right Headlamp Leveling Motor
Right Headlamp Leveling Motor harness is open or shorted
Right Headlamp Leveling Motor circuit poor electrical connection
Faulty Automatic Headlamp Leveling Module (AHLM)

How to Fix the DTC B168A RAM?

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 B168A RAM 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.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B168A RAM Code

1. What are the common symptoms of OBDII code B168A RAM?

- Common symptoms include improper headlamp leveling, headlamp aiming issues, and potentially a warning light on the dashboard.

2. What could cause the OBDII code B168A RAM to occur?

- The code may be triggered by a faulty right headlamp leveling motor, damaged wiring or connectors, or a malfunctioning headlamp control module.

3. How can I diagnose the cause of the B168A RAM code?

- To diagnose the issue, you can start by checking the wiring and connectors for any visible damage, testing the right headlamp leveling motor, and inspecting the headlamp control module.

4. Can a DIY enthusiast repair the B168A RAM code issue?

- Depending on your skill level and experience, you may be able to replace the right headlamp leveling motor or repair damaged wiring yourself. However, complex electrical issues may require professional assistance.

5. Is it safe to continue driving with the B168A RAM code present?

- It is generally not recommended to drive with the B168A RAM code present, as it can affect the proper functioning of your vehicle's headlamp leveling system, potentially leading to safety concerns.

6. How much does it typically cost to repair the B168A RAM code?

- The cost of repairing the B168A RAM code can vary depending on the specific cause of the issue, but it may involve replacing the right headlamp leveling motor, repairing wiring, or addressing issues with the headlamp control module.

7. Can weather conditions impact the occurrence of the B168A RAM code?

- Extreme weather conditions or exposure to moisture can potentially affect the right headlamp leveling motor or the wiring, leading to the triggering of the B168A RAM code.

8. Will resetting the OBDII system clear the B168A RAM code?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the B168A RAM code is not addressed, it is likely to reappear.

9. How important is it to fix the B168A RAM code promptly?

- It is important to address the B168A RAM code promptly to ensure the proper functioning of your vehicle's headlamp leveling system and maintain optimal visibility while driving.

10. Can the B168A RAM code affect other vehicle systems?

- While the B168A RAM code specifically relates to the right headlamp leveling motor control circuit, unresolved issues with this code may potentially impact other vehicle electrical systems or components.