NHTSA ID Number: 11032002
Manufacturer Communication Number: 01-007-26
TSB/Document Date: 2026-05-03
Summary
Some vehicles may exhibit the check engine light ON with DTC P2112 (Throttle valve actuator control motor current system: Characteristic malfunction). The DTC is stored when the engine is started at sub-zero ambient temperatures. To eliminate this concern, the PCM logic has been modified. REPAIR PROCEDURE Reprogram the PCM with the Mazda
Modular Diagnostic System (M-MDS), using Mazda Diagnostic and Repair Software (MDARS). Refer to MDARS ECU Reprogramming Procedure.
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TSB/Document ID: 01-007-26
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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BULLETIN NOTES
APPLICABLE MODEL(S)/VINS
2023 CX-30 (Mexico built) vehicles with VINs lower than 3MV DM**** ** 589483 (Produced before Sept. 4, 2023)
2023 Mazda3 (Japan built) vehicles with VINs lower than JM1 BP**** ** 623994 (Produced before May 23, 2023)
2023 Mazda3 (Mexico built) vehicles with VINs lower than 3MZ BP**** ** 385903 (Produced before Sept. 11, 2023)
DESCRIPTION
Some vehicles may exhibit the check engine light ON with DTC P2112 (Throttle valve actuator control motor current
system: Characteristic malfunction). The DTC is stored when the engine is started at sub-zero ambient temperatures. To
eliminate this concern, the PCM logic has been modified.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
1. Verify the customer concern.
2. Reprogram the PCM with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic and Repair
Software (MDARS). Refer to MDARS ECU Reprogramming Procedure.
NOTE: Be sure to submit Diagnostic Information (ODR) data as it is a required item and will be checked during
warranty claim submission. Instructions can be found under M-MDS -> MDARS (Uploading Diagnostic
Information (ODR) Data).
3. Clear any other DTCs.
4. Verify the repair by starting the engine (READY ON) and confirming there is no CHECK ENGINE light ON or abnormal
warning lights present.
Page 1 of 2
04/07/2026 02:51 PM tlawrenc
CALIBRATION
ECU
Model
Mazda3
PCM
CX-30
File Name (Old)
File Name (New)
PXMT-188K2-G
PXMT-188K2-H
PXRR-188K2-G
PXRR-188K2-H
PXMW-188K2-G
PXMW-188K2-H
PXRS-188K2-G
PXRS-188K2-H
PXNA-188K2-G
PXNA-188K2-H
PXRT-188K2-G
PXRT-188K2-H
PXPH-188K2-G
PXPH-188K2-H
PXRW-188K2-G
PXRW-188K2-H
PXPJ-188K2-G
PXPJ-188K2-H
PXRX-188K2-G
PXRX-188K2-H
PXNT-188K2-H
PXNT-188K2-J
PXRV-188K2-H
PXRV-188K2-J
Actual time to
reprogram
3 min.
NOTE: This Service Information only is applicable for vehicles using the above calibration files.
WARRANTY INFORMATION
NOTE:
• This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
• This repair will be covered under Federal Emission Warranty.
• Additional diagnostic time cannot be claimed for this repair.
Warranty Type
A
Symptom Code
6X
Damage Code
9W
Causal Part No.
5555-18-881
Quantity
Operation No. and Labor Hours
0
XXX5RXFX / 0.3 Hrs.
After reprogramming, be sure to keep a copy of the ECU FILENAME screen on M-MDS along with the repair order and
warranty application sheet.
Page 2 of 2
04/07/2026 02:51 PM tlawrenc
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