Rough Idle DTC P0300 P0301 P0302 P0303 P0304 In Cold Temperature – 2013-2016 Mazda

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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

  1. Verify concern of water accumulated and frozen in the main silencer and the tail pipe.

main silencer

  1. Replace the main silencer. Refer to MS3 online or Workshop Manual.
    • Mazda3 – EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5]
    • Mazda6EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5]
    • CX-5EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5]
  2. Inspect the engine oil level. If the engine oil level is above the F mark, replace the engine oil.
  3. Erase any stored DTC(s).
  4. 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 Rough Idle DTC P0300 P0301 P0302 P0303 P0304 In Cold Temperature - 2013-2016 Mazda | small light
NUT-SELFLOCK 2 9994-61-000 Rough Idle DTC P0300 P0301 P0302 P0303 P0304 In Cold Temperature - 2013-2016 Mazda | small light

 

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’s New Vehicle Limited Warranty term.
  • Additional diagnostic time cannot be claimed for this repair.
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

https://www.nhtsa.gov/recalls?nhtsaId=10092916

https://www.nhtsa.gov/recalls?nhtsaId=10092062

https://static.nhtsa.gov/odi/tsbs/2016/SB-10092916-6903.pdf

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01-011/16

04/15/2016

https://www.nhtsa.gov/recalls?nhtsaId=10093142

https://static.nhtsa.gov/odi/tsbs/2016/SB-10093142-6903.pdf

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