| Subject:
ROUGH IDLE AND/OR MIL ON WITH DTC P0300, P0301, P0302, P0303 OR P0304 IN COLD TEMPERATURE | Bulletin No: 01-011/16 |
| Last Issued: 06/20/2016 |
BULLETIN NOTE
This bulletin supersedes the previously issued bulletin(s) listed below: The changes are noted in Red beside the change bars.
| Previously issued TSBs | Date issued: |
| 01-011/16 | 04/15/2016 |
APPLICABLE MODEL(S)/VINS
2014-2016 Mazda3
2014-2016 Mazda6
2013-2016 CX-5
DESCRIPTION
When the engine is started for the first time after parking the vehicle overnight in cold conditions (below zero degrees Celsius), some vehicles may exhibit a rough idle and/or the check engine light on with any of the following DTC(s) stored in memory.
- P0300 – Random misfire detected
- P0301 – Cylinder No.1 misfire detected
- P0302 – Cylinder No.2 misfire detected
- P0303 – Cylinder No.3 misfire detected
- P0304 – Cylinder No.4 misfire detected
This may be caused by frozen water accumulated in the main silencer, restricting exhaust flow.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
- Replace the main silencer. Refer to MS3 online or Workshop Manual.
- Mazda3 – EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5]
- Mazda6 – EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5]
- CX-5 – EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5]
- Inspect the engine oil level. If the engine oil level is above the F mark, replace the engine oil.
- Erase any stored DTC(s).
- Verify repair.
PART(S) INFORMATION
| Description | Qty. | Notes | Part Number |
| SILENCER ASSY-MAIN | 1 | Mazda3 4 door | PEY7-40-100 |
| SILENCER ASSY-MAIN | 1 | Mazda3 5 door | PEY8-40-100 |
| SILENCER ASSY-MAIN | 1 | Mazda6 | PYY3-40-100 |
| SILENCER ASSY-MAIN | 1 | CX-5 2.0L | PEY6-40-100 |
| SILENCER ASSY-MAIN | 1 | CX-5 2.5L 2WD | PYY1-40-100 |
| SILENCER ASSY-MAIN | 1 | CX-5 2.5L 4WD | PYY2-40-100 |
| GASKET-EXH PIPE | 1 | — | PE23-40-305
Genuine Mazda Parts - Gasket (PE23-40-305) Assorted One Size
Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API |
| NUT-SELFLOCK | 2 | — | 9994-61-000 No products found. |
WARRANTY INFORMATION
NOTE:
- This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
- This repair will be covered under Mazda
โs New Vehicle Limited Warranty term. - Additional diagnostic time cannot be claimed for this repair.
โs New Vehicle Limited Warranty term.| Replace main silencer | Replace main silencer and engine oil | |
| Warranty Type | A | |
| Symptom Code | 03 | |
| Damage Code | 9W | |
| Diagnostic Trouble Code (DTC) | P0300, P0301, P0302, P0303, or P0304 | |
| Part Number Main Cause | ****-40-100 | |
| Quantity | 1 | |
| Operation Number / Labor Hours: | XXM1GARX / 0.4 Hrs. | XXM1GBRX / 0.6 Hrs. |
NOTE:
- Warranty claim submission will require entry of a valid DTC.
- Attach the IDS session file with FFD and Mode 6 to the RO.
01-011/16
06/20/2016
01-011/16
04/15/2016
Bestseller No. 1
LCGP Bolt On Diesel Exhaust Tip 4", 6" outlet 15" Long Truck Tip, Rolled Angle Cut, Black Powder Coated
- SIZE:Standard exhaust tip size 4" inlet 6" outlet 15" overall length,please measure the OD of your tailpipe before purchasing
- MATERIAL:The exhaust pipe is made of stainless steel,it is corrosion-resistant and not easy to deform,the surface powder coating is not easy to rust
- DESIGN:The tail of the exhaust tip features an angle-cut and rolled-up design that is both aesthetically pleasing and ensures that it won't harm your hands.Additionally, a small hole at the bottom of the tip facilitates the drainage of water,reducing the likelihood of water accumulation and subsequently preventing rust
- INSTALLATION:It is installed by screws and can be tightened with a wrench,which is simple and easy to operate.Regular cleaning is recommended
- APPLICATIONS:Universal exhaust pipe,suitable for most exhaust systems of the same size.Professional installation is recommended
SaleBestseller No. 2
Upower Universal Diesel Trucks Car Exhaust Tip 4 Inch Inlet 6" Outlet 15" Long Stainless Steel Bolt-On
- ใDimensionใInlet Diameter:4"; Outlet Diameter: 6"; Overall Length: 15".
- ใDesignใBolt On - Rolled Edge - 45 Degree Single Angle Cut.
- ใMaterialใHigh quality stainless steel mirror polished. Long-lasting and Anti-corrosive,protect the original tips from Sun and Rain,avoid rusting and deformation.
- ใWide ApplicationใUniversal fits 4" OUTLET diesel trucks pickup car exhaust system. Note: Please keep the Exhaust tip away from salt,snow solvents and avoid using highly acid chemical cleaners
- ใEasy InstallationใNo weld and drill needed. Just fix the screw to the appropriate location of tailpipe by Wrench.
Bestseller No. 3
Upower Pack of 2 Dual Exhaust Tip Tailpipe 2.5 Inch Inlet 3.5" Outlet 9.5" Length Polished Stainless Exhaust Tip for Car Truck (Double Wall Weld-On Angle Cut Design)
- ใ2.5"X(3.5"X2) X9.5" Exhaust Tipใ2.5 inch Inlet; 2x3.5 inch Outlet ; 9.5 inch Overall Length Muffler Tip
- ใWeld-On Exhaust TipใWeld On - Double Wall Slant Angle Cut Tail pipe Tip for Truck
- ใStainless Steel Exhaust TipใUpower exhaust pipe is made of high-quality stainless steel that is mirror polished, ensuring durability and resistance to corrosion. It also helps protect the original tips from exposure to the conditions, such as sun and rain, and avoids rusting and deformation. For optimal longevity, we recommend cleaning the exhaust tip regularly
- ใWide ApplicationใUniversal fits 2.5" INLET diesel trucks car pickup exhaust tail pipe. Please check all the dimensions of exhaust tip before purchasing in case of installation interference
- ใUpower Exhaust TipใPack of 2 Exhaust Tip. No instruction is included. Professional installation is highly recommended.
SaleBestseller No. 4
Upower Pack of 2 Exhaust Tip 2.5 inch Inlet 4 inch Outlet 9" Long 304 Stainless Steel 2.5" to 4" Diesel Exhaust Tailpipe Tip Double Wall Slant Cut
- ใ2.5" Exhaust Tipใ2.5 inch Inlet; 4 inch Outlet ; 9 inch Overall Length Muffler Tip
- ใWeld-On Exhaust TipใWeld On - Double Wall Slant Angle Cut - Rolled Edge Tail pipe Tip for Truck
- ใStainless Steel Exhaust TipใUpower exhaust pipe is made of high-quality 304 stainless steel that is mirror polished, ensuring durability and resistance to corrosion. It also helps protect the original tips from exposure to the conditions, such as sun and rain, and avoids rusting and deformation. For optimal longevity, we recommend cleaning the exhaust tip regularly
- ใWide ApplicationใUniversal fits 2.5" INLET diesel trucks car pickup exhaust tail pipe. Please check all the dimensions of exhaust tip before purchasing in case of installation interference
- ใUpower Exhaust TipใPack of 2x Exhaust Tip. No instruction is included. Professional installation is highly recommended
Bestseller No. 5
Upower 2.5 Inch Inlet 3.5" Outlet 9.5" Overall Length Polished Stainless Exhaust Tailpipe Tips Weld-On Duo Layer Angle Exhaust Tip for Car Truck
- ใ2.5"X(3.5"X2) X9.5" Exhaust Tipใ2.5 inch Inlet; 2x3.5 inch Outlet ; 9.5 inch Overall Length Muffler Tip
- ใWeld-On Exhaust TipใWeld On - Double Wall Slant Angle Cut Tail pipe Tip for Truck
- ใStainless Steel Exhaust TipใUpower exhaust pipe is made of high-quality stainless steel that is mirror polished, ensuring durability and resistance to corrosion. It also helps protect the original tips from exposure to the conditions, such as sun and rain, and avoids rusting and deformation. For optimal longevity, we recommend cleaning the exhaust tip regularly
- ใWide ApplicationใUniversal fits 2.5" INLET diesel trucks car pickup exhaust tail pipe. Please check all the dimensions of exhaust tip before purchasing in case of installation interference
- ใUpower Exhaust TipใPack of 1 x 2.5" Exhaust Tip, No instruction is included. Professional installation is highly recommended
Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API
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