Service Bulletin

Mazda North American Operations
Irvine, CA 92618-2922

© 2015 Mazda Motor of America, Inc.

Subject:

Bulletin No:

CHECK ENGINE LIGHT AND A/T WARNING LIGHT ON WITH ONE OR MORE OF
THESE DTCS (P0842, P0847, P0872, P0877, P0780) STORED IN TCM MEMORY Last Issued:

05-002/15
03/26/2015

MULTI-MODEL (WITH SKYACTIV 6AT) - CHECK ENGINE LIGHT AND A/T WARNING LIGHT ON WITH ONE
OR MORE OF THESE DTCS (P0842, P0847, P0872, P0877, P0780) STORED IN TCM MEMORY

NOTE
• This bulletin has been revised to STOP TCM reprogramming of 2014-16 CX-5 with 2.5L and 2014-16
Mazda6 without i-ELOOP. Otherwise, shifting problems will occur.

BULLETIN NOTE
• This bulletin supersedes the previous bulletins 05-002/15, issued on 03/10/15, 05-005/14, issued on 04/29/
14, 04/09/14, 03/28/14, and 3/25/14, 05-003/14 issued on 04/04/14 and 02/21/14, and 05-005/13 issued on
09/23/13, 9/25/13,12/16/13, and 12/17/13. The REPAIR PROCEDURE has been revised.
• Changes are noted below in Red beside the change bar.

APPLICABLE MODEL(S)/VINS
2012-2013 Mazda3 with SKYACTIV 6AT
2014-2016 Mazda3 with SKYACTIV 6AT (Japan built - VINS starting with JM1)
2014-2016 Mazda3 with SKYACTIV 6AT (Mexico built - VINS starting with 3MZ)
2013-2016 CX-5 with SKYACTIV 6AT
2014-2016 Mazda6 with SKYACTIV 6AT

DESCRIPTION
Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or
more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780).
• P0842:00 - Oil pressure switch No. 1 (oil pressure switch B) stuck on
• P0847:00 - Oil pressure switch No. 2 (oil pressure switch A) stuck on
• P0872:00 - Oil pressure switch No. 3 (oil pressure switch A) stuck on
• P0877:00 - Oil pressure switch No. 4 (oil pressure switch B) stuck on
• P0780:00 - Gear shifting malfunction
This is caused by the oil pressure switch A and/or B at the control valve body temporarily or permanently getting
stuck due to contamination entering the passage. To correct the problem, some mass production changes have
been implemented to reduce contamination and improve the DTC diagnostic logic.
Customers having this concern should have their vehicle repaired using the following repair procedure.

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CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

REPAIR PROCEDURE
1. Verify customer concern.
2. Check for DTCs.
• If any of the DTCs (P0842, P0847, P0872, P0877, P0780) is stored in TCM memory, go to step 3.
• If any other DTCs are present or no DTCs are present, perform Workshop Manual troubleshooting.
3. If the vehicle is in the applicable VIN range listed below, proceed to TCM Reprogramming.” Otherwise, proceed to “Parts Replacement.”
2012-2013 Mazda3 JM1BL******500001 - 999999
2014-2015 Mazda3 JM1BM******100001 - 299999 (Japan built)
2014-2015 Mazda3 3MZBM******100001 - 199999 (Mexico built)
2014-2015 Mazda6 (with i-ELOOP only) JM1GJ******100001 - 299999 (except Mexico spec)
2013-2015 CX-5 (with 2.5L only) JM3KE******100001 - 599999 (except Mexico spec)
CAUTION: Although there is a TCM reflash available for 2014-16 CX-5 with 2.5L and Mazda6 without
i-ELOOP, DO NOT reflash these TCMs. Otherwise, shifting problems will occur.
NOTE:
•
•
•

If the concern has occurred with older TCM file, parts replacement is not necessary.
If the concern has occurred with new TCM file, proceed to Parts Replacement.
If the new TCM file for the vehicle is TBD, proceed to Parts Replacement.

Page 2 of 11

Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

TCM Reprogramming
1. Reboot the IDS to clear memory before reprogramming.
2. Using IDS 94.03 or later software, reprogram the PCM to the latest calibration (refer to “Calibration Information” table) by following the “Module Reprogramming” procedure.
NOTE:
•
•

•
•

•

•

Always update the IDS tool first, then follow on-screen instructions to download the needed calibration file for PCM reprogramming.
It is not necessary to remove any fuses or relays during PCM reprogramming when the IDS
screen prompts you to do so. You may accidentally stop power to one of the PCM terminals and
cause the PCM to be blanked, or you may receive error messages during the IDS reprogramming procedure.
IDS shows the calibration part numbers after programming the PCM.
Please be aware that PCM calibration part numbers and file names listed in any Service Bulletin
may change due to future releases of IDS software, and additional revisions made to those calibrations for service related concerns.
When reprogramming a PCM, IDS will always display the “latest” calibration P/N available for
that vehicle. If any calibration has been revised/updated to contain new information for a new
service concern/issue, it will also contain all previously released calibrations.
When performing this procedure, we recommend using the “Power Supply” mode in the
Battery Management System to keep the vehicle battery up to capacity. If a different
charger is used, make sure it does not exceed 20 AMPS. If it exceeds 20 AMPS, it could
damage the VCM.

3. After performing the PCM reprogramming procedure, verify the repair by starting the engine and making
sure there is no Check Engine Light or abnormal warning lights present.
NOTE:
•
•

If any DTCs should remain after performing DTC erase, diagnose the DTCs using MS3 online
instructions or Workshop Manual section 01-02.
After PCM reprogramming, it is no longer necessary to road test the vehicle to “relearn” KAM
(Keep Alive Memory).

4. Perform “Initial Learning” according to the instructions on MS3 online or the Workshop Manual (section 0517 INITIAL LEARNING [FW6AEL, FWAX-EL])

Page 3 of 11

Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

Parts Replacement
NOTE: Proceed with Parts Replacement only if concern re-occurs after TCM reprogramming for applicable
vehicles.
1. Remove the oil pan from the transaxle according to the instructions on MS3 online or the Workshop Manual
(section 05-17 CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6AEL, FWAX-EL]).
2. Remove the oil strainer (A) and the oil strainer O-rings (B) from the transaxle.
F=Front of vehicle

3. Remove oil pressure switch A.
a. At oil pressure switch A, insert a precision flathead screwdriver (B) and move it in the direction of the
arrow in the figure to disconnect the oil pressure switch A connector (C).

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Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

b. Remove the bolts for oil pressure switch A.

c. Detach the tab shown and remove oil pressure switch A from the control valve body.
1. Using an appropriate tool (such as a fastener remover), push the tab (A) of oil pressure switch A.

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Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

CAUTION: If the tab is broken during removal, make sure to remove the broken pieces.

2. Pull out oil pressure switch A by shaking it.
CAUTION: When removing oil pressure switch A, be careful not to damage the transaxle fluid temperature (TFT) sensor harness nearby.

Page 6 of 11

Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

4. Remove oil pressure switch B.
a. Insert a precision flathead screwdriver (A) and move it in the direction of the arrow as shown to disconnect the oil pressure switch B connector.

b. Remove oil pressure switch B.

5. Install new oil pressure switches A and B.
6. Verify that the tab of each oil pressure switch (A and B) is attached correctly.
7. Install the bolts for oil pressure switches A and B.
Tightening torque: 9-10 N•m {92-101 khf•cm, 80-88 in•lbf}

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Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

8. Connect the oil pressure switch A and oil pressure switch B connectors.

9. Install the oil strainer with new oil strainer O-rings according to the instructions on MS3 online or the Workshop Manual (section 05-17 CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6AEL, FWAX-EL]).
NOTE: If there is a large amount of foreign material at the bottom of the oil pan, replace the oil strainer with
a new one.
10. Install the oil pan according to the instructions on MS3 online or the Workshop Manual (section 05-17 CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6AEL, FWAX-EL]).
CAUTION: Clean any remaining silicone sealant off the contact surfaces of the transaxle case and oil pan.
a. Apply a light coat of silicon sealant to the contact surfaces of the oil pan and transaxle case.

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Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

b. Install the oil pan with new bolts before the applied sealant starts to harden.
Tightening torque: 8-10 N•m {82-101 khf•cm, 71-88 in•lbf}

11. Install the removed parts.
12. Add ATF according to the instructions on MS3 online or the Workshop Manual (section 05-17 AUTOMATIC
TRANSAXLE FLUID (ATF) REPLACEMENT [FW6A-EL] ).
13. Connect the negative battery cable.
14. Perform the Initial Learning Procedure. Refer to MS3 online instructions or Workshop Manual section 05-17.
15. Perform the Mechanical System Test. Refer to MS3 online instructions or Workshop Manual section 05-17.
16. Verify repair.

CALIBRATION INFORMATION
2012-2013 Mazda3

TCM File Name

Production Date Range

PEY0-21PS1-A

Before March 31, 2013

PE08-21PS1-N

After March 31, 2013

2014-2015 Mazda3

TCM File Name

Engine

i-ELOOP

VIN

PE5B-21PS1-D

PE (2.0L)

w/o

JM1 (Japan built)

PEDB-21PS1-B

w/

PY2S-21PS1-D

PY (2.5L)

w/

PEAR-21PS1-A

PE (2.0L)

w/o

3MZ (Mexico built)

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Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

2013 CX-5

TCM File Name

Drive

Kickdown Switch

Production Date Range

TBD (*1)

2WD

w/o

Before March 31, 2013

PE02-21PS1-J

After March 31, 2013

PEX1-21PS1-A

Service part after August 1, 2013

PEY1-21PS1-A

w/

Before March 31, 2013

PEAS-21PS1-C
TBD (*2)

After March 31, 2013
4WD

w/o

Before March 31, 2013

PE1B-21PS1-J

After March 31, 2013

PEX2-21PS1-A

Service part after August 1, 2013

PEY2-21PS1-A

w/

Before March 31, 2013

PEAT-21PS1-C

After March 31, 2013

NOTE:
•
•

TBD (*1): New TCM file will be available later. Current version is PE02-21PS1-G.
TBD (*2): New TCM file will be available later. Current version is PE1B-21PS1-G.

2014-2015 CX-5

TCM File Name

Engine

Drive

Production Date Range

PEY5-21PS1-A

PE (2.0L)

2WD

Before March 31, 2013

PE1H-21PS1-D

After March 31, 2013

PEY6-21PS1-A

4WD

Before March 31, 2013

PE1K-21PS1-D

After March 31, 2013

Mazda6

TCM File Name

i-ELOOP

Production Date Range

PY1T-21PS1-C

w/

--

Page 10 of 11

Bulletin No: 05-002/15

Last Issued: 03/26/2015

© 2015 Mazda Motor of America, Inc.

PART(S) INFORMATION

Part Number

Description

Qty.

Notes

FZ01-21-2C0

Switch A

1

---

FZ01-21-2J0

Swtich B

1

---

9YA0-10-615A

Bolt

16

Replace part

FZ01-21-031

O-ring

1

Replace part

FZ01-21-032

O-ring

1

Replace part

FU31-19-423

Plug

1

Replace part

9956-41-400

Drain Packing

1

Replace part

FZ01-21-500

Oil Strainer

1

Replace if needed. FZ01-21-031 and FZ01-21-032
(O-rings) are included with this part.

WARRANTY INFORMATION
NOTE:
•
•

•

This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
This repair will be covered under the following Warranty terms:
- Oil pressure switch replacement - Powertrain Limited Warranty / CA PZEV Emission Warranty
where applicable
- TCM reprogramming - Federal Emission Warranty (long term) / CA PZEV Emission Warranty
where applicable
Additional diagnostic time cannot be claimed for this repair.

Oil Pressure Switch A and B
Replacement

TCM Reprogramming
(includes initial learning)

Warranty Type

A

Symptom Code

6X

Damage Code

9W

DTC
Part Number Main Cause
Quantity
Operation Number / Labor Hours:

P0842, P0847, P0872, P0877, or P0780
FZ01-21-2C0

5555-RP-TCM

1

0

XXK43ARX / 1.8 Hrs.

XXK43CFX / 0.3 Hrs.

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