NHTSA ID Number: 11022717
Manufacturer Communication Number: SA-009-25a
TSB/Document Date: 2025-09-04
Summary
Some customers may experience a Connected Vehicle failure. The MyMazda App may display an Error Code. This document provides Error Code description and recovery information to assist with repairs.
BULLETIN NOTES
This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red.
Previous SAs:
Date(s) Issued:
SA-009/25
02/18/25
SA-064/24
09/23/24
APPLICABLE MODEL(S)/VINS
2019-2026 Mazda3
2021-2023 CX-9
2024-2026 CX-90 (All)
2020-2026 CX-30
2022-2023 MX-30
2024-2026 MX-5
2021-2025 CX-5
2023-2026 CX-50 (All)
2025-2026 CX-70 (All)
DESCRIPTION
Some customers may experience a Connected Vehicle failure. The MyMazda App may display an Error Code. This
document provides Error Code description and recovery information to assist with repairs.
Index
•
•
•
•
•
System Structure Outline
MYMAZDA App Connected Vehicle (CV) Error Codes
Vehicle Confirmation Instructions
Troubleshooting Instructions
Resources
System Structure Outline
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A - MyMazda App
• User interface about operation / information
Main Function
(1) - Data
• Communication through customer network
B - System Center
• User / Contract information management system operation
C - Local Carrier
• Communication network provider
• Data, SMS and Voice
D - Vehicle
• System operation based on order by Telecommunication Module (TCU)
• TCU with SIM, works like smartphone
E - Service Provider (Canada)
• Additional service provider
Workflow Outline
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>Remote control function
(engine start, door lock, EV A/C,
location confirmation, ...)
A - MyMazda App
(1) - Request
(2) - Operation result
B - System Center
C - Local Carrier
D - Vehicle Operation
E - Service Provider (Canada)
>Notification function
(door unlock, EV charging status,
burglar-alarm, ...)
A - MyMazda App
(1) - Detected information
B - System Center
C - Local Carrier
D - Vehicle Detection
E - Service Provider (Canada)
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Private e-call
Canada only
>Connection to 3rd party service
(Private e-call, ...)
A - MyMazda App
(1) - Call
(2) - Response
B - System Center
C - Local Carrier
D - Vehicle Operation
E - Service Provider (Canada)
MYMAZDA App Connected Vehicle (CV) Error Codes
Index
Error Codes
200***
400S04
400S15
401C00
400C00
400S05
400S16
403C00
400C01
400S06
400S17
409C00
400C02
400S07
400S18
500C00
400C03
400S08
400S19
500C01
400C04
400S09
400S20
500C02
400C05
400S10
400S21
500C03
400C06
400S11
400S22
500C06
400S00
400S12
400S23
500C07
400S01
400S13
400S24
E401005
400S03
400S14
400S25
E900500
Error Messages
Internal Usher SDK error
Multiple devices detected
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Enrollment in Progress
Vehicle Confirmation Instructions
200***
Description
The request was completed successfully [200***]
Customer
No action needed
Dealer
No action needed
Description
This occurs when the customer's input information contains an invalid value
or a required value does not exist.
MyMazda App Message Please check the input and try again. [400C00]
Process Flow
400C00
Customer
Confirm input data (ex. input alphabet into
the area which is required number)
Check that there are no blanks in required
input fields.
Dealer
If there are no abnormalities in the input
values, there may be a problem with the
system center -> Go to " Troubleshooting
Instructions".
Confirmation/Recovery
400C01
Description
It occurs when customer's input contains invalid value or there is blank at
required items.
Please check the input and try again. (400C01)
MyMazda App Message
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Process Flow
Customer
Wait several minutes and try again.
Review the input data and try again.
Dealer
If the error continues to occur, there may be
a problem with the system center -> Go to "
Troubleshooting Instructions".
Confirmation/Recovery
Description
It occurs when the request (date information) is incorrect.
MyMazda App Message Please check the date input and try again. [400C02]
Process Flow
400C02
Confirmation/Recovery
400C03
Description
Customer
Review the input data and try again.
Dealer
If the error continues to occur, there may be
a problem with the system center -> Go to "
Troubleshooting Instructions".
This occurs when the customer's input information contains invalid values.
MyMazda App Message Please check the input and try again. [400C03]
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Process Flow
Customer
Review the input data and try again.
Wait about 5 minutes and try the operation
again.
Dealer
If the error continues to occur, there may be
a problem with the system center -> Go to "
Troubleshooting Instructions".
Confirmation/Recovery
This occurs when there is no data matching the conditions in the process of
checking the vehicle status using services such as Remote Control or
Vehicle Status.
Main factors;
Description
• When adding VIN or searching from MCVV, a VIN that was not
registered at the center was specified due to a VIN input error.
• Files are not uploaded from the onboard device (time lag in ofn files,
etc.).
MyMazda App Message Please check the input and try again. [400C04]
400C04
Process Flow
Confirmation/Recovery Customer
Wait about 5 minutes and try the operation
again.
Turn on IG-on, check the reception strength
icon at the bottom right of the center display.
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If the reception is poor, the function cannot
be executed.
Dealer
Description
Go to Vehicle Confirmation Instructions.
Occurs when there is no data matching the conditions during processing (ex.
inbox update process)
MyMazda App Message Please check the input and try again. [400C05]
Process Flow
400C05
Confirmation/Recovery
400C06
Description
Customer
Review the input data and try again.
Dealer
If there are no abnormalities in the input
values, there may be a problem with the
system center -> Go to " Troubleshooting
Instructions".
Occurs due to a processing error at the system center (call processing
error).
Please check the input and try again. (400C06)
MyMazda App Message
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Process Flow
Customer
Review the input data and try again.
Wait about 5 minutes and try the operation
again.
Dealer
If there are no abnormalities in the input
values, there may be a problem with the
system center -> Go to " Troubleshooting
Instructions".
Confirmation/Recovery
Description
This occurs because "Cancel" was selected in response to a push
notification for an approval request.
MyMazda App Message
Please wait for a while and try again. If the error error continues, please
contact the call center. [400S00]
Process Flow
400S00
Confirmation/Recovery
400S01
Description
Customer
Retry the operation again.
Dealer
This is a system error and may or may not
be resolved by repeated retries.
If the error continues to occur, there may be
a problem with the system center -> Go to "
Troubleshooting Instructions".
Occurs when the next remote operation is performed before the previous
remote operation request has completed.
In addition, it occurs in the following cases;
All steps were not completed when replacing the TCU, and keys
could not be exchanged.
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Remote operation is in progress. Please wait for a while and try again.
(400S01)
MyMazda App Message
Only one remote request can be completed per 60-second period.
Cause
Multiple execution of remote control.
Process Flow
Confirmation/Recovery
Customer
Wait for a response to the previous request,
or wait 5 minutes and try again.
Make sure that the vehicle keys are not left
inside the vehicle. → If it remains, it cannot
be executed.
Check to see if any operations, such as
opening a door, are being performed
between the time the operation is performed
and the response is received from the
vehicle. → Cannot be executed if there is an
operation.
Turn on IG-on, check the reception strength
icon at the bottom right of the center display.
If the reception is poor, the function cannot
be executed.
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Dealer
Follow the Vehicle Confirmation Instructions.
Description
This occurs when the data in question does not exist, has already been
deleted, or the input data is incorrect when deleting a user.
MyMazda App Message
Target data is not available. This data has already been deleted or is
incorrect. [400S03]
Cause
Because there are cases where conditions are not met, and where even if
conditions are met, it may be deleted depending on the timing of processing.
400S03
Process Flow
Confirmation/Recovery
400S04
Customer
Review the input data and try again.
Dealer
If the error continues to occur, there may be
a problem with the system center -> Go to "
Troubleshooting Instructions".
Occurs when a remote engine stop request is made when the vehicle is in
one of the following conditions;
• Remote engine start is not requested
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TSB/Document ID: SA-009-25a
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-22
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem: Connected Vehicle
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