AutoCodes – Jeep – B221C Jeep

B221C Jeep Code - Memory Seat Module Internal

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 Memory Seat Module-Driver (MSMD), Memory Seat Module-Driver (MSMD) harness is open or shorted, Memory Seat Module-Driver (MSMD) 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: B221C Jeep indicates Memory Seat Module Internal.
Common causes: Common causes include Faulty Memory Seat Module-Driver (MSMD), Memory Seat Module-Driver (MSMD) harness is open or shorted, Memory Seat Module-Driver (MSMD) 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 884

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 Oct 01, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B221C Jeep Description

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. 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 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.

OBDII Code B221C Jeep - Memory Seat Module Internal - AutoCodes.com — B221C Jeep Code - Memory Seat Module Internal

What does this mean?

What are the Possible Causes of the DTC B221C Jeep?

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

How to Fix the DTC B221C Jeep?

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 B221C Jeep 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 B221C Jeep Code

1. What are the common symptoms of OBDII code B221C in a Jeep related to the Memory Seat Module Internal?

- The common symptoms include issues with memory seat settings not being saved, malfunctioning power seat adjustments, and error messages on the dashboard related to the seat module.

2. What are the possible causes of the B221C code in a Jeep's Memory Seat Module?

- The code B221C typically indicates an internal fault within the Memory Seat Module, which can be caused by a faulty module, wiring issues, or a software glitch.

3. How can I diagnose the B221C code in my Jeep's Memory Seat Module?

- Diagnosing the B221C code involves using an OBDII scanner to retrieve the code, checking the wiring connections to the Memory Seat Module, and performing a thorough inspection of the module itself for any visible damage.

4. Can I continue to drive my Jeep with the B221C code present in the Memory Seat Module?

- While the B221C code related to the Memory Seat Module is not a critical issue that affects the drivability of the vehicle, it is recommended to address the problem to ensure proper functioning of the seat controls.

5. How can I reset the B221C code in my Jeep's Memory Seat Module?

- Resetting the B221C code can be done using an OBDII scanner to clear the code after addressing any underlying issues with the Memory Seat Module or its components.

6. Is it possible to repair the Memory Seat Module internally to resolve the B221C code issue?

- In some cases, the Memory Seat Module can be repaired internally by addressing the specific fault within the module, but it may be more cost-effective to replace the module if the issue is complex.

7. Are there any DIY tips for troubleshooting the B221C code in a Jeep's Memory Seat Module?

- DIY tips for troubleshooting the B221C code include checking the fuse related to the Memory Seat Module, inspecting the wiring for any visible damage, and ensuring all connections are secure.

8. Can a software update fix the B221C code issue in the Memory Seat Module of a Jeep?

- A software update provided by the manufacturer or dealership may help resolve the B221C code issue if it is caused by a software glitch within the Memory Seat Module.

9. How much does it typically cost to repair the B221C code related to the Memory Seat Module in a Jeep?

- The cost of repairing the B221C code in the Memory Seat Module can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Is it recommended to seek professional help for diagnosing and repairing the B221C code in a Jeep's Memory Seat Module?

- Due to the complexity of automotive electronics and the specific nature of the B221C code, it is generally recommended to seek professional help from a qualified mechanic or dealership for diagnosing and repairing issues with the Memory Seat Module.