B1D9B Code - Seat Horizontal Front Stop Not Learned Or Missing Calibration
Quick Answer
The Memory System is made up of a Memory Seat Module-Driver (MSMD), Memory Switch, Driver Seat Switch, Adjustable Pedal Switch, and multiple Seat Motors and an Adjustable Pedal Motor. Common causes include Seat Track damaged or Obstructed, Seat standardization routine not performed, Faulty Memory Seat Module-Driver (MSMD). 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
- B1D9B indicates Seat Horizontal Front Stop Not Learned Or Missing Calibration.
- Common causes
- Common causes include Seat Track damaged or Obstructed, Seat standardization routine not performed, Faulty Memory Seat Module-Driver (MSMD).
- 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.
Code B1D9B Description
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 Adjustable Pedal Switch is a three position switch (forward, center, rearward). The MSMD monitors the forward and rearward circuits voltage. If a voltage change is detected, the MSMD will command the Adjustable Pedal motor to move the pedals in the requested direction as long as the Adjustable Pedal 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 and pedal 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 and pedal 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 and pedal positions for that particular selection and return the seat and pedals 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.
What are the Possible Causes of the DTC B1D9B?
- Seat Track damaged or Obstructed
- Seat standardization routine not performed
- Faulty Memory Seat Module-Driver (MSMD)
How to Fix the DTC B1D9B?
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 B1D9B 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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Information for Specific Makes
- B1D9B Chrysler — Seat Horizontal Front Stop Not Learned Or Missing Calibration
- B1D9B Dodge — Seat Horizontal Front Stop Not Learned Or Missing Calibration
- B1D9B Jeep — Seat Horizontal Front Stop Not Learned Or Missing Calibration
- B1D9B RAM — Seat Horizontal Front Stop Not Learned Or Missing Calibration
Frequently Asked Questions about B1D9B Code
1. What are the common symptoms of OBDII code B1D9B (Seat Horizontal Front Stop Not Learned Or Missing Calibration)?
- The common symptoms include improper seating position adjustment, erratic movement of the front seat, and potential issues with seat memory functions.
2. What are the possible causes of OBDII code B1D9B?
- The code B1D9B can be triggered by a malfunction in the seat control module, damaged seat position sensors, or incorrect calibration of the seat horizontal front stop.
3. How can I diagnose the cause of OBDII code B1D9B?
- To diagnose the cause of the code B1D9B, a thorough inspection of the seat controls, position sensors, and calibration procedures may be necessary. Using a diagnostic scan tool to retrieve additional fault codes can also help pinpoint the issue.
4. Is it safe to drive with OBDII code B1D9B present?
- It is generally safe to drive with the B1D9B code, but it is recommended to address the issue promptly to avoid potential discomfort or inconvenience due to improper seat adjustment.
5. How can I repair OBDII code B1D9B (Seat Horizontal Front Stop Not Learned Or Missing Calibration)?
- Repairing the B1D9B code may involve recalibrating the seat position sensors, resetting the seat control module, or replacing faulty components if necessary. Following manufacturer-specific repair procedures is essential.
6. Can I reset OBDII code B1D9B without professional help?
- Resetting the B1D9B code may be possible by using a diagnostic scan tool to clear the code after addressing the underlying cause. However, if the issue persists, seeking professional help is recommended.
7. Are there any DIY tips to prevent OBDII code B1D9B from reoccurring?
- Regularly checking and maintaining the seat adjustment system, avoiding sudden impacts or rough handling of the seat, and following proper seat calibration procedures can help prevent the B1D9B code from reoccurring.
8. Will OBDII code B1D9B affect the overall performance of the vehicle?
- The B1D9B code typically does not affect the overall performance or drivability of the vehicle. However, it may impact the convenience and comfort of adjusting the front seat position.
9. How long does it take to repair OBDII code B1D9B?
- The repair time for the B1D9B code can vary depending on the specific cause and the complexity of the repair. Simple recalibration procedures may take a short time, while component replacement could be more time-consuming.
10. Can OBDII code B1D9B be a recurring issue?
- OBDII code B1D9B can be a recurring issue if the underlying cause, such as improper calibration or sensor malfunction, is not effectively addressed during the repair process. Regular maintenance and proper handling of the seat adjustment system can help prevent recurrence.
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