B1D73 Code - Seat Rear Vertical Position Sensor Circuit
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 Faulty Seat Rear Vertical Position Sensor, Seat Rear Vertical Position Sensor harness is open or shorted, Seat Rear Vertical Position Sensor 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
- B1D73 indicates Seat Rear Vertical Position Sensor Circuit.
- Common causes
- Common causes include Faulty Seat Rear Vertical Position Sensor, Seat Rear Vertical Position Sensor harness is open or shorted, Seat Rear Vertical Position Sensor 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.
Code B1D73 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 B1D73?
- Faulty Seat Rear Vertical Position Sensor
- Seat Rear Vertical Position Sensor harness is open or shorted
- Seat Rear Vertical Position Sensor circuit poor electrical connection
- Faulty Driver Rear Vertical Seat Adjuster Motor
- Faulty Memory Seat Module-Driver (MSMD)
How to Fix the DTC B1D73?
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.
Code Tech Notes
B1D73-12 SEAT REAR VERTICAL POSITION SENSOR CIRCUIT SHORT TO BATTERY
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1D73 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
- B1D73 Chrysler — Seat Rear Vertical Position Sensor Circuit
- B1D73 Dodge — Seat Rear Vertical Position Sensor Circuit
- B1D73 Jeep — Seat Rear Vertical Position Sensor Circuit
- B1D73 RAM — Seat Rear Vertical Position Sensor Circuit
Frequently Asked Questions about B1D73 Code
1. What are the common symptoms of OBDII code B1D73 related to the Seat Rear Vertical Position Sensor Circuit?
- Common symptoms include issues with the seat's vertical position adjustment, erratic movement, or the seat not moving at all.
2. What could cause the OBDII code B1D73 to trigger in relation to the Seat Rear Vertical Position Sensor Circuit?
- Possible causes include a faulty rear vertical position sensor, damaged wiring or connectors, or a malfunction in the seat control module.
3. How can I diagnose the OBDII code B1D73 for the Seat Rear Vertical Position Sensor Circuit?
- Diagnosis involves using a diagnostic scanner to retrieve the code, inspecting the sensor and related wiring for damage, and conducting tests to pinpoint the issue.
4. Are there any DIY repair tips for fixing OBDII code B1D73 associated with the Seat Rear Vertical Position Sensor Circuit?
- DIY repair tips may include checking and repairing damaged wiring, ensuring proper sensor alignment, and resetting the seat control module after fixing the issue.
5. Can I continue driving my vehicle with the OBDII code B1D73 related to the Seat Rear Vertical Position Sensor Circuit?
- It is not recommended to drive your vehicle with this code unresolved, as it can impact the functionality and safety of the seat adjustment system.
6. How much does it typically cost to repair OBDII code B1D73 for the Seat Rear Vertical Position Sensor Circuit?
- Repair costs can vary depending on the specific issue, but they may range from $100 to $300 for parts and labor.
7. Is it necessary to visit a dealership or can any mechanic address the OBDII code B1D73 for the Seat Rear Vertical Position Sensor Circuit?
- Any qualified mechanic with experience in diagnosing and repairing automotive electrical systems should be able to address this OBDII code.
8. Will resetting the OBDII code B1D73 fix the issue with the Seat Rear Vertical Position Sensor Circuit?
- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code to trigger.
9. How long does it take to repair the OBDII code B1D73 related to the Seat Rear Vertical Position Sensor Circuit?
- Repair times can vary based on the exact cause of the issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem.
10. Can extreme temperatures or humidity affect the Seat Rear Vertical Position Sensor Circuit and trigger the OBDII code B1D73?
- Yes, extreme temperatures or humidity can potentially affect the sensor's performance and wiring integrity, leading to the triggering of this OBDII code.
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