NHTSA ID Number: 11028143
Manufacturer Communication Number: SSPD8 Repair b
TSB/Document Date: 2026-02-03
Summary
SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: On certain subject vehicles, the check engine light is illuminated with DTC P0126:00 (Thermostat stuck open) stored in memory and one or more of the following symptoms may occur: - Engine takes longer to warm up. - Engine temperature gauge fluctuates. - Low coolant temperature indicator (blue) light stays on longer or turns on while driving. - Poor heater performance, especially at idle. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a “Software Update” record for the PCM when using MDARS or IDS. • MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. • IDS – Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs.
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TSB/Document ID: SSPD8 Repair b
Replacement Service Bulletin Number:
MFR Communication Date: 2026-01-30
MFR Internal Campaign ID/Software Version: SSPD8
Communication Type: Warranty Program/Extension
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem: Cooling System
Previous TSB | Next TSB |
REPAIR PROCEDURE & PARTS AND WARRANTY INFORMATION
WARRANTY EXTENSION SSPD8
SSPD8 - ENGINE TEMPERATURE AND HEATER PERFORMANCE CONCERNS WITH OR
WITHOUT DTC P0126:00
Updated 1/30/2026:
• DTC P0126:00 is not required to be present to perform this repair.
Please follow all updated diagnosis and guidelines in the
TSB 01-001/26 or any future updated version of the TSB.
Dummy Plug repair – (MUST READ FLOW CHART - beginning on page 3).
WARRANTY EXTENSION
For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY
Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the
warranty coverage for specific repair of the fail-safe thermostat (now dummy plug with PCM update) is
extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the
original warranty start date.
CONDITION OF CONCERN – PLEASE FOLLOW THE DIAGNOSIS GUIDELINES
On certain subject vehicles, the check engine light is illuminated with OR without DTC P0126:00 and
one or more of the following symptoms may occur:
- Engine takes longer to warm up.
- Engine temperature gauge fluctuates.
- Low coolant temperature indicator (blue) light stays on longer or turns on while driving.
- Poor heater performance, especially at idle.
Page 1 of 7
REPAIR PROCEDURE & PARTS AND WARRANTY INFORMATION
WARRANTY EXTENSION SSPD8
SUBJECT VEHICLES
Model
Eng Type
2018-2025
CX-5 MC built
SKYACTIV-G 2.0
(Non-US Market)
SKYACTIV-G 2.5
2019-2023
Mazda3 MC built
SKYACTIV-G 2.0
SKYACTIV-G 2.5
2019-2023
Mazda3 MMVO
built
SKYACTIV-G 2.0
SKYACTIV-G 2.5
2019-2022
CX-3 MC built
SKYACTIV-G 2.0
2018-2021
Mazda6 MC built
SKYACTIV-G 2.5
2020-2023
CX-30 MMVO
built
SKYACTIV-G 2.0
SKYACTIV-G 2.5
Subject VIN range
JM3KF****J* 300038 - 476255
JM3KF****K* 500024 - 700253
JM3KF****L* 700008 - 869654
JM3KF****M* 100003 - 501350
JM3KF****N0 500013 - 649502
JM3KF****P0 100008 - 292784
JM3KF****R0 395874 - 538201
JM3KF****S0 538202 – 617579
JM1BP****K1 100042 - 147655
JM1BP****L1 147656 - 176406
JM1BP****M1 300012 - 404511
JM1BP****N1 500003 - 522752
JM1BP****P1 600066 - 623951
3MZBP****KM 100048 - 115055
3MZBP****LM 115095 - 140607
3MZBP****MM 200017 - 254975
3MZBP****NM 300004 - 319454
3MZBP****PM 350329 - 384076
JM1DK****K* 400011 - 461251
JM1DK****L1 461252 - 475309
JM1DK****M1 500002 - 517836
JM1DK****N1 600107 - 605934
JM1GL****J1 300026 - 336737
JM1GL****K1 500004 - 510914
JM1GL****L1 510920 - 527665
JM1GL****M1 600006 - 620105
3MVDM****LM 100056 - 140312
3MVDM****MM 200016 - 320220
3MVDM****NM 400004 - 459759
3MVDM****PM 500075 - 589428
Subject production date
range
From October 3, 2017
through December 18,
2024
From September 25, 2018
through May 23, 2023
From January 15, 2019
through September 5,
2023
From February 27, 2018
through June 8, 2022
From January 15, 2018
through November 12,
2021
From September 26, 2019
through September 1,
2023
The asterisk symbol “*” can be any letter or number. Only VIN’s in eMDCS Warranty Inquiry with SSPD8
displayed are covered
OWNER NOTIFICATION
Mazda began notifying all U.S. owners of the subject vehicles by first class mail in November 2024.
Owners for certain CX-5 vehicles were notified in March 2025.
Owners have been advised that they do not need to bring their vehicle to a dealer if it does
not exhibit the affected condition.
Owners have also been advised that any previous repair on the fail-safe thermostat or coolant
control valve due to similar concern of this SSP will be eligible for reimbursement if the repair was
performed at the owner’s expense. Please refer the customer to the Owner Letter for
reimbursement instructions.
Page 2 of 7
REPAIR PROCEDURE & PARTS AND WARRANTY INFORMATION
WARRANTY EXTENSION SSPD8
REPAIR PROCEDURE – FLOW CHART
Section A: Flow Chart:
NOTE: This Flow Chart needs to be followed strictly.
Determine the version of Mazda Connect, then proceed to repair.
NOTE this is a generic list of models updated by IDS not specific to
this repair
If the version is 6th Generation TYPE A - Use IDS*
except *2019-2022 CX-3 must use MDARS
OR
If the version is 7th Generation TYPE B - Use MDARS
FOR 2019-2022 CX-3 use MDARS
The dummy plug and PCM update repair procedure are required as of December 8, 2025. The TSB
has been updated to repair with the dummy plug and PCM update here: 6.
REPAIR PROCEDURE - INSTRUCTIONS
If you receive customer complaints about the check engine light ON WITH or WITHOUT DTC
P0126:00, or with poor heater performance with any of the symptoms mentioned in the TSB
documentation, verify the concerns and perform appropriate repair according to the
Technical Service Bulletin (TSB) No. 01-001/26.
Note: Please always refer to the latest version of the SI/TSB.
Page 3 of 7
REPAIR PROCEDURE & PARTS AND WARRANTY INFORMATION
WARRANTY EXTENSION SSPD8
PARTS INFORMATION
Parts Number
Description
Quantity
PYY3-15-SA1
Dummy Plug Set for
CCV
1
PYY2-15-SAY
Kit
1
0000-77-508F-20
2
Notes
Component:
Plug (PW5R-15556), Water outlet
gasket (PYFA-15-169A), Thermostat
cover (no service part number)
Includes: (1) Gasket, Water Outlet
PYFB-15-169 &
(1) Connector PE13-15-296
7.4 L {7.8 US qt, 6.5 Imp qt}
maximum
DUMMY PLUG AND PCM UPDATE WARRANTY CLAIM PROCESSING INFORMATION:
Note:
This warranty information is applicable to the repair of the subject vehicle beyond Powertrain
Warranty period and the fail-safe dummy plug is replaced and PCM software update is completed
due to the concern related to this SSPD8.
The repair on the subject vehicle within Powertrain Warranty should be claimed under normal
warranty according to the Technical Service Bulletin (TSB) 01-001/26.
This warranty information is applicable only to the repair related with or without DTC P0126:00
and related symptoms.
VITALLY IMPORTANT: There must be a “Software Update” record for the PCM when using MDARS or IDS.
•
MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic
Information (ODR Update) is not completed (or both), the vehicle will not be considered
repaired and the warranty claim will be rejected. The vehicle will need to be returned for a
re-repair at the dealer expense.
•
IDS – Vehicles programed with IDS must collect the Session Log Data (also known as Log
Viewer), and that data must be printed and attached to the warranty claim. If the data is not
attached to the claim, the vehicle will not be considered repaired and the warranty claim will
be rejected, denied or debited. The vehicle will need to be returned for a re-repair at the
dealer expense.
Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the
dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update
could also potentially damage the engine which would not be covered by warranty and would expose
your dealership to the cost of repairs. (1) Please wait up to 30 minutes after completing the SSPD8
operation before submitting the warranty claim.
Page 4 of 7
REPAIR PROCEDURE & PARTS AND WARRANTY INFORMATION
WARRANTY EXTENSION SSPD8
VEHICLES WITH MDARS ONLY - Out of Powertrain Warranty
- Replacement of Fail-safe Thermostat with Plug
- PCM reprogramming with M-MDS
Process Number
Symptom Code
Damage Code
Part Number Main
Cause & Quantity
Related Part
Number & Quantity
Labor Operation
Number & Labor
Hours
Period Covered
AR050B
6X (Warning Light ON/Flashing)
9K (Poor sealing)
PYY3-15-SA1 & 1
PYY2-15-SAY & 1 Kit
0000-77-508F20 & 2 (Max. 7.4L coolant)
Operation No.
Labor hours
Applicable models
- Mazda3 (BP) - MDARS
XXX43ARX
1.6 hrs.
- CX-30 (DM) – MDARS
- CX-3 (DK) - MDARS
- CX-5 (KF) with AT (2020*-2025) MDARS
XXX43BRX
1.7 hrs.
*2020 with Type B Mazda Connect
Out of Powertrain Warranty period,
and Within 15 years/150,000 miles (240,000 km) from
original Warranty Start Date
VEHICLES WITH IDS ONLY - Out of Powertrain Warranty
- Replacement of Fail-safe Thermostat with Plug
- PCM reprogramming
Process Number
Symptom Code
Damage Code
Part Number Main
Cause & Quantity
Related Part
Number & Quantity
Labor Operation
Number & Labor
Hours
Attachment ID:
Period Covered
AR050C
6X (Warning Light ON/Flashing)
9K (Poor sealing)
PYY3-15-SA1 & 1
PYY2-15-SAY & 1 Kit
0000-77-508F20 & 2 (Max. 7.4L coolant)
Operation No.
Labor hours
Applicable models
XXX43ARX
1.6 hrs.
- CX-5 (KF) with MT (Non US) – IDS*
- CX-5 (KF) with AT (2018-2020MY) IDS*
XXX43BRX
1.7 hrs.
- Mazda6 (GL) – IDS*
D20 – Collected Diagnostic Data Print out from IDS
Out of Powertrain Warranty period,
and Within 15 years/150,000 miles (240,000 km) from
original Warranty Start Date
*IDS Applicable Models: Collected Session Log Data must be printed and attached to the claim.
Failure to attach the data will result in claim rejection, denial or debit.
Page 5 of 7
REPAIR PROCEDURE & PARTS AND WARRANTY INFORMATION
WARRANTY EXTENSION SSPD8
OR with related parts still in dealer inventory
VEHICLES WITH MDARS ONLY - Out of Powertrain Warranty
- Replacement of Fail-safe Thermostat with Plug
- PCM reprogramming with M-MDS
Process Number
Symptom Code
Damage Code
Part Number Main
Cause & Quantity
Related Part
Number & Quantity
Labor Operation
Number & Labor
Hours
Period Covered
AR050B
6X (Warning Light ON/Flashing)
9K (Poor sealing)
PYY3-15-SA1 & 1
PYFB-15-169 & 1 Gasket, Water Outlet
PE13-15-296 & 1 Connector
0000-77-508F20 & 2 (Max. 7.4L coolant)
Operation No.
Labor hours
Applicable models
- Mazda3 (BP) - MDARS
XXX43ARX
1.6 hrs.
- CX-30 (DM) – MDARS
- CX-3 (DK) - MDARS
- CX-5 (KF) with AT (2020*-2025) MDARS
XXX43BRX
1.7 hrs.
*2020 with Type B Mazda Connect
Out of Powertrain Warranty period,
and Within 15 years/150,000 miles (240,000 km) from
original Warranty Start Date
VEHICLES WITH IDS ONLY - Out of Powertrain Warranty
- Replacement of Fail-safe Thermostat with Plug
- PCM reprogramming
Process Number
Symptom Code
Damage Code
Part Number Main
Cause & Quantity
Related Part
Number & Quantity
Labor Operation
Number & Labor
Hours
Attachment ID:
Period Covered
AR050C
6X (Warning Light ON/Flashing)
9K (Poor sealing)
PYY3-15-SA1 & 1
PYFB-15-169 & 1 Gasket, Water Outlet
PE13-15-296 & 1 Connector
0000-77-508F20 & 2 (Max. 7.4L coolant)
Operation No.
Labor hours
Applicable models
XXX43ARX
1.6 hrs.
- CX-5 (KF) with MT (Non US) – IDS*
- CX-5 (KF) with AT (2018-2020MY) IDS*
XXX43BRX
1.7 hrs.
- Mazda6 (GL) – IDS*
D20 – Collected Diagnostic Data Print out from IDS
Out of Powertrain Warranty period,
and Within 15 years/150,000 miles (240,000 km) from
original Warranty Start Date
*IDS Applicable Models: Collected Session Log Data must be printed and attached to the claim.
Failure to attach the data will result in claim rejection, denial or debit.
Page 6 of 7
REPAIR PROCEDURE & PARTS AND WARRANTY INFORMATION
WARRANTY EXTENSION SSPD8
Dealers can use the Limited Parts Ordering (LPO) screen on eMDCS to order the repair parts. There
is a weekly maximum allotment, which is displayed on the LPO screen. The LPO process and weekly
quantity limit helps to ensure our supply is balanced across the U.S. dealer network and available for
all customers.
RENTAL CAR INFORMATION
Rental expenses exceeding the two-day limit or over the per day limit set by Mazda Warranty policy
will require prior Warranty Department Authorization prior to giving the rental to the customer
regardless of the reason. Please refer to the Mazda Rental Car Reimbursement Program policy in
the Mazda Warranty Policies and Procedures Manual.
Mazda recommends the usage of the MCVP loaner vehicle when available. If all MCVP loaner vehicles
are in use and unavailable, and the customer needs a rental car, then use your local rental facility and
offer a rental car. Be sure that every effort is made to repair the car within one business day or less, so
the next customer can receive the same experience.
Rental Car Warranty Claim Information
MCVP Vehicle Preferred
Warranty Type Code
Symptom Code
Damage Code
Part Number Main Cause
Part Quantity
Labor Operation Code
Labor Hours
Sublet – Rental Car
Sublet Invoice
Number
Sublet Type Code
Sublet Amount
Sublet Text
Rental Agency Vehicle or
Ride Share (Uber, Lyft, Taxi)
A
99
99
5555-SS-PD8R
0
MM024XRX
0
N/A
MCVP does not require claim
submission
Number from Rental Invoice
or Dealer Purchase Order
Enter “Z9” (other)
Up to $30.00 for
rideshare, or per day for
the number of days
customer had rental car.
Rental car costs cannot
exceed maximum allowed
per warranty policy.
Number of days rental car
was supplied to customer
Page 7 of 7
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