Technical
Service Bulletin

Mazda North American Operations
Irvine, CA 92618-2922

Subject:
CHECK ENGINE LIGHT ON WITH DTC P0172:00

Bulletin No.: 01-019/18

Last Issued: 10/10/2018

APPLICABLE MODEL(S)/VINS
2013 CX-5 2.0L (M/T) with VINs lower than JM3KE******168326 (produced before November 15, 2012)
2013 CX-5 2.0L (A/T) without kickdown switch with VINs lower than JM3KE******148075 (produced before
September 6, 2012)

DESCRIPTION
Some vehicles may experience a check engine light on with DTC P0172:00 stored in the PCM memory.
This normally occurs during the fast idle immediately after starting the engine or after the fast idle lowers to
a normal idle.



DTC P0172:00 - Fuel trim system too rich

Due to improper PCM control logic, the fuel injection amount may be improperly compensated when the
engine start is not smooth and due to low quality fuel.

REPAIR PROCEDURE
1. Verify the customer concern.
2. Inspect the FFD and verify it meets the following conditions

Page 1 of 6
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-019/18

Last Issued: 10/10/2018

DTC
= P0172:00
FUELSYS1 = Closed Loop
ECT
= 45°C [113°F] or below
⇒
RPM
= (Idle speed)
VS
= 0 KPH [0 MPH]
RUNTM = During or right after faster idle rpm
(For example; RUNTM = 00:35)

- Yes: Proceed to the next step.
- No: This Service Information does not apply. Diagnose according to the instructions on MGSS online.
3. With Mazda Modular Diagnostic System (M-MDS) datalogger function, monitor the MAF voltage with
ignition on and engine off condition.
After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
(1) Select "Tool Box".
(2) Select “Datalogger”.
(2) Select “Modules”.
(3) Select “PCM”.
4. Select MAF from the PID table.
5. Verify the MAF voltage is approx. 0.72V and stable.
NOTE: While monitoring the MAF voltage, shake and twist the harness and connector for the mass air flow
(MAF) sensor / intake air temperature (IAT) sensor No.1.

Page 2 of 6
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-019/18

Last Issued: 10/10/2018

- If the MAF voltage changes as shown when shaking or twisting, the wiring is suspect and should be
inspected/repaired before continuing with TSB.

- Is the MAF value normal even when shaking and twisting the harness and connector?
- Yes: Proceed to the next step.
- No: This Service Information does not apply. Diagnose according to the instructions on MGSS online.
6. With M-MDS datalogger function, monitor SHRTFT1 and LONGFT1 during normal idling after warm up.
Does the sum of SHRTFT1 and LONGFT1 exceed 20%?

Page 3 of 6
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-019/18

Last Issued: 10/10/2018

- Yes: This Service Information does not apply. Diagnose according to the instructions on MGSS online.
- No: Proceed to the next step.
7. Is one or more DTC (P0300:00, P0301:00, P0302:00, P0303:00 and P0304:00) stored?
- Yes: This Service Information does not apply. Diagnose according to the instructions on MGSS online.
- No: Proceed to "PCM REPROGRAMMING".
PCM REPROGRAMMING:
1. Reboot the IDS to clear memory before reprogramming.
2. Using IDS110.07or 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.
• Start/Stop button vehicles only: DO NOT press the start/stop button during the reprogramming process.
• 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, clear DTCs.
4. After clearing DTCs, start the engine and confirm that no warning lights stay on.
5. Record customer presets in the infotainment system.
6. Disconnect the negative battery cable and wait for 30 seconds or more to reset the fuel control learning
data.
7. Re-connect the negative battery cable.
8. Re-enter customer presets in infotainment system.
NOTE:
If any DTCs should remain after performing DTC erase, diagnose the DTCs using MGSS online instructions
and submit a warranty claim according to the normal warranty procedure.

Page 4 of 6
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-019/18

Last Issued: 10/10/2018

CALIBRATION INFORMATION
Emission Drive Transmission
Calif

2WD

M/T

A/T

Fed

4WD

A/T

2WD

M/T

A/T
4WD

A/T

File Name

Older File Name

Note

PUZ2-188K2-F

PE01

Mitsubishi

PUZ4-188K2-F

PE1G

Denso

PE02-188K2-U

-

Mitsubishi

PE1H-188K2-T

-

Denso

PE1B-188K2-U

-

Mitsubishi

PE1K-188K2-T

-

Denso

PUZ3-188K2-F

PE1C

Mitsubishi

PUZ5-188K2-F

PE1L

Denso

PE1D-188K2-U

-

Mitsubishi

PE1M-188K2-T

-

Denso

PE1F-188K2-U

-

Mitsubishi

PE1P-188K2-T

-

Denso

NOTE:





If the calibration file has the same suffix shown in the table above or later, the PCM already has the
modified calibration.
The Older File Name column shows the first four letters of the older file name. Some of the older file
names are different from the new file name.
It is not necessary to order a PCM part for this repair procedure.

WARRANTY INFORMATION
NOTE:
• This warranty information applies only to verified customer complaints on vehicles eligible for warranty
repair.
• This repair will be covered under Fed. Emission Warranty (long term).
• Additional diagnostic time cannot be claimed for this repair.

Warranty Type

A

Symptom Code

6X

Damage Code

9W

Part Number Main Cause

5555-RP-PCM
Page 5 of 6

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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-019/18

Quantity
Operation Number / Labor
Hours:

Last Issued: 10/10/2018

0
XXP8CXFX / 0.4 Hrs.

Page 6 of 6
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.

© 2018 Mazda North American Operations, U.S.A.