# P0301 on the 2016 Mazda CX\-5

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0301

- [10153314](https://open.wenmarpro.com/bulletins/10153314), 2019-02-19: When the engine is started for the first time after parking the vehicle overnight in cold conditions \(below 32 degrees Fahrenheit / 0 degrees Celsius\), 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.
- [10134691](https://open.wenmarpro.com/bulletins/10134691), 2018-04-23: When the engine is started for the first time after parking the vehicle overnight in cold conditions \(below 32 degrees Fahrenheit / 0 degrees Celsius\), 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.
- [10120370](https://open.wenmarpro.com/bulletins/10120370), 2017-10-21: Some vehicles may experience an engine that runs rough and the check engine light on with DTCs P0201 and P0204 or P0202 and P0203. NOTE: Engine misfire related DTCs \(P0301, P0302, P0303, P0304\) are usually stored at the same time. P0201:00 : Fuel injector circuit/open cylinder No.1 P0202:00 : Fuel injector circuit/open cylinder No.2 P0203:00 : Fuel injector circuit/open cylinder No.3 P0204:00 : Fuel injector circuit/open cylinder No.4 This concern may be caused by an internal failure of the PCM \(DENSO produced only\). To correct the concern, the PCM internal failure has been eliminated.
- [10111005](https://open.wenmarpro.com/bulletins/10111005), 2017-08-10: When the engine is started for the first time after parking the vehicle overnight in cold conditions \(below 32 degrees Fahrenheit / 0 degrees Celsius\), 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.
- [10099404](https://open.wenmarpro.com/bulletins/10099404), 2017-05-17: SOME VEHICLES MAY EXPERIENCE A LACK OF POWER DURING HARD ACCELERATION \(APPROX. 6,000 RPM\) IN COLD WEATHER CONDITIONS BELOW 32 °F \(0 °C\). DTCS P0300:00, P0301:00 AND/OR P0302:00 ARE STORED IN MEMORY. • P0300:00: RANDOM MISFIRE DETECTED • P0301:00: CYLINDER NO. 1 MISFIRE DETECTED • P0302:00: CYLINDER NO. 2 MISFIRE DETECTED THIS IS CAUSED BY IMPROPER CONTROL LOGIC OF THE PCM. THE PCM MAY DETECT A FALSE MISFIRE UNDER THE SUBJECT CONDITIONS AND MAY FALL INTO FAIL SAFE MODE. TO ELIMINATE THIS CONCERN, THE PCM CONTROL LOGIC HAS BEEN CHANGED.
- [10099265](https://open.wenmarpro.com/bulletins/10099265), 2017-05-16: SOME VEHICLES MAY EXPERIENCE A LACK OF POWER DURING HARD ACCELERATION \(APPROX. 6,000 RPM\) IN COLD WEATHER CONDITIONS BELOW 32 °F \(0 °C\). DTCS P0300:00, P0301:00 AND/OR P0302:00 ARE STORED IN MEMORY. • P0300:00: RANDOM MISFIRE DETECTED • P0301:00: CYLINDER NO. 1 MISFIRE DETECTED • P0302:00: CYLINDER NO. 2 MISFIRE DETECTED THIS IS CAUSED BY IMPROPER CONTROL LOGIC OF THE PCM. THE PCM MAY DETECT A FALSE MISFIRE UNDER THE SUBJECT CONDITIONS AND MAY FALL INTO FAIL SAFE MODE. TO ELIMINATE THIS CONCERN, THE PCM CONTROL LOGIC HAS BEEN CHANGED.
- [10092916](https://open.wenmarpro.com/bulletins/10092916), 2017-02-24: WHEN THE ENGINE IS STARTED FOR THE FIRST TIME AFTER PARKING THE VEHICLE OVERNIGHT IN COLD CONDITIONS \(BELOW 32 DEGREES FAHRENHEIT / 0 DEGREES CELSIUS\), 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.
- [10092781](https://open.wenmarpro.com/bulletins/10092781), 2017-02-24: SOME VEHICLES MAY EXPERIENCE A LACK OF ENGINE POWER/ROUGH IDLING AND THE CHECK ENGINE LIGHT ON WITH ONE OR MORE OF THE MISFIRE RELATED DTCS OF P0300:00, P0301:00, P0302:00, P0303:00 AND P0304:00. THIS CONCERN MAY BE CAUSED BY AN INTERNAL FAILURE OF THE IGNITION COIL\(S\) DUE TO A HIGH DIFFERENCE BETWEEN COLD AND WARM AMBIENT TEMPERATURES. THE PRODUCTION METHOD OF THE IGNITION COIL HAS BEEN CHANGED TO ELIMINATE THIS CONCERN.
- [10092582](https://open.wenmarpro.com/bulletins/10092582), 2017-02-23: SOME VEHICLES MAY EXPERIENCE AN ENGINE THAT RUNS ROUGH AND THE CHECK ENGINE LIGHT ON WITH DTCS P0201 AND P0204 OR P0202 AND P0203.NOTE:ENGINE MISFIRE RELATED DTCS \(P0301, P0302, P0303, P0304\) ARE USUALLY STORED AT THE SAME TIME.P0201:00: FUEL INJECTOR CIRCUIT/OPEN CYLINDER NO.1P0202:00: FUEL INJECTOR CIRCUIT/OPEN CYLINDER NO.2P0203:00: FUEL INJECTOR CIRCUIT/OPEN CYLINDER NO.3P0204:00: FUEL INJECTOR CIRCUIT/OPEN CYLINDER NO.4THIS CONCERN MAY BE CAUSED BY AN INTERNAL FAILURE OF THE PCM \(DENSO PRODUCED ONLY\). TO CORRECT THE CONCERN, THE PCM INTERNAL FAILURE HAS BEEN ELIMINATED.
- [10092062](https://open.wenmarpro.com/bulletins/10092062), 2017-02-17: WHEN THE ENGINE IS STARTED FOR THE FIRST TIME AFTER PARKING THE VEHICLE OVERNIGHT IN COLD CONDITIONS \(BELOW 32 DEGREES FAHRENHEIT / 0 DEGREES CELSIUS\), 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.