B221C Chrysler 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 Chrysler 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.
Code B221C Chrysler 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 B221C Chrysler?
- 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 Chrysler?
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 Chrysler 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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Frequently Asked Questions about B221C Chrysler Code
1. What does the OBDII code B221C on a Chrysler mean?
The B221C code indicates an internal fault in the Memory Seat Module, which controls seat position memory settings.
2. What are common symptoms of the B221C code?
Symptoms may include the memory seat feature not working, seat positions not adjusting properly, or an illuminated check engine or warning light.
3. What causes the B221C Memory Seat Module Internal code on a Chrysler?
This code is typically caused by a software glitch, an internal fault in the module, or electrical issues such as shorted or corroded wiring.
4. Can I still drive my car with the B221C code?
Yes, you can still drive your car, but the memory seat function may be inoperative until the issue is resolved.
5. How do you diagnose the B221C code on a Chrysler?
Diagnosis involves using a scan tool to confirm the code, checking for related wiring or connector issues, and testing the Memory Seat Module for internal faults.
6. Can the B221C code be fixed by resetting the system?
In some cases, disconnecting the battery for a few minutes or performing a module reset with a scan tool can temporarily clear the code, but further diagnostics may still be needed.
7. Does the Memory Seat Module need to be replaced for the B221C code?
If the module has an internal fault and cannot be repaired, replacement is usually required to resolve the code.
8. How much does it cost to repair the B221C code on a Chrysler?
Costs vary but typically range from $200 to $600, depending on whether wiring repairs or module replacement are necessary.
9. Can a software update fix the B221C code?
In some cases, a dealership may resolve the issue with a software update if the problem is related to firmware glitches in the Memory Seat Module.
10. What should I do if the B221C code keeps coming back?
If the code persists, have a professional inspect the wiring, connectors, and the module itself to identify and resolve the root cause of the issue.
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