AutoCodes – RAM – B1D84 RAM

B1D84 RAM Code - Seat Rear Vertical Motor Control Performance Or Incorrect Operation

Quick Answer

The Memory System is made up of the Memory Seat Module-Driver (MSMD), Memory Switch, Driver Seat Switch and multiple Seat Motors. Common causes include Faulty Driver Rear Vertical Seat Adjuster Motor, Driver Rear Vertical Seat Adjuster Motor harness is open or shorted, Driver Rear Vertical Seat Adjuster 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: B1D84 RAM indicates Seat Rear Vertical Motor Control Performance Or Incorrect Operation.
Common causes: Common causes include Faulty Driver Rear Vertical Seat Adjuster Motor, Driver Rear Vertical Seat Adjuster Motor harness is open or shorted, Driver Rear Vertical Seat Adjuster 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 420

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1D84 RAM Description

The Memory System is made up of the Memory Seat Module-Driver (MSMD), Memory Switch, Driver Seat Switch and multiple Seat Motors. The motors each contain a hall-effect position sensor. The hall-effect position sensor provides feedback to the MSMD in relation to the motors position.
The Driver Seat Switch is a Multiplex (Mux) switch which uses set resistance levels for each switch position. These resistances correspond to different voltages which is monitored by the MSMD over two separate circuits. When a voltage change is detected, the MSMD will command the appropriate Seat motor(s) to move the seat in the requested direction as long as the Driver Seat Switch is held in that direction or its stops have been reached.
The Memory Switch is a Mux switch that is used to set and recall the seat positions. When a Memory Switch button is pressed, the Driver Door Module (DDM) detects a voltage change and sends a request over the Controller Area Network (CAN) bus circuit to the MSMD to perform the requested command. If the SET button on the Memory Switch is pressed, followed by the 1 or 2 button, the MSMD will store the seat positions based on the position inputs received from the hall-effect position sensors. If the 1 or 2 button on the Memory Switch is pressed, the MSMD will recall the stored seat positions for that particular selection and return the seat to the stored positions. Memory position may also be recalled using a linked FOBIK transmitter. For driver safety, the MSMD will prevent the memory recall function from being initiated if the transmission gear selector lever is not in the Park position or if the vehicle is moving.

OBDII Code B1D84 RAM - Seat Rear Vertical Motor Control Performance Or Incorrect Operation - AutoCodes.com — B1D84 RAM Code - Seat Rear Vertical Motor Control Performance Or Incorrect Operation

What does this mean?

What are the Possible Causes of the DTC B1D84 RAM?

Faulty Driver Rear Vertical Seat Adjuster Motor
Driver Rear Vertical Seat Adjuster Motor harness is open or shorted
Driver Rear Vertical Seat Adjuster Motor circuit poor electrical connection
Faulty Memory Seat Module-Driver (MSMD)

How to Fix the DTC B1D84 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 B1D84 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 B1D84 RAM Code

1. What are the common symptoms of OBDII code B1D84 RAM related to Seat Rear Vertical Motor Control?

The common symptoms include erratic seat movement, inability to adjust the rear vertical position of the seat, and unusual noises coming from the seat.

2. What could cause the OBDII code B1D84 RAM related to Seat Rear Vertical Motor Control?

Possible causes could be a faulty rear vertical motor, damaged wiring or connectors leading to the motor, or a malfunction in the control module responsible for seat adjustments.

3. How can I diagnose the OBDII code B1D84 RAM for Seat Rear Vertical Motor Control issues?

You can diagnose the code by conducting a visual inspection of the seat components, testing the rear vertical motor for proper functionality, and using a diagnostic scanner to pinpoint the exact issue.

4. What are some DIY repair tips for fixing OBDII code B1D84 RAM Seat Rear Vertical Motor Control problems?

DIY repair tips may include checking and repairing any damaged wiring or connectors, replacing the rear vertical motor if faulty, and resetting the seat control module to clear the code.

5. Is it safe to continue driving with the OBDII code B1D84 RAM Seat Rear Vertical Motor Control warning?

It is not recommended to continue driving with this code as it may affect the operability of the seat, potentially leading to discomfort or safety issues while driving.

6. Can resetting the OBDII code B1D84 RAM Seat Rear Vertical Motor Control fix the problem permanently?

Resetting the code may temporarily clear the warning, but it is essential to address the root cause of the issue to prevent it from reoccurring in the future.

7. How much does it cost to repair OBDII code B1D84 RAM Seat Rear Vertical Motor Control problems at a professional mechanic?

The cost of repair can vary depending on the specific issue, but it may involve labor costs for diagnosis, replacement parts, and any additional services required to fix the seat control problem.

8. What are the potential risks of ignoring the OBDII code B1D84 RAM Seat Rear Vertical Motor Control warning?

Ignoring the warning may result in further damage to the seat components, complete loss of rear vertical adjustment functionality, or safety hazards while driving.

9. Can extreme temperatures or humidity affect the occurrence of OBDII code B1D84 RAM Seat Rear Vertical Motor Control issues?

Extreme temperatures or humidity levels can potentially exacerbate existing issues with the rear vertical motor or wiring, leading to the triggering of the B1D84 code.

10. Is it possible to prevent OBDII code B1D84 RAM Seat Rear Vertical Motor Control problems from happening in the future?

Regular maintenance checks, timely repairs of any seat adjustment issues, and avoiding excessive force when adjusting the seat can help prevent the recurrence of OBDII code B1D84 RAM related to Seat Rear Vertical Motor Control.