# P0300 on the 2017 Mazda CX\-3

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 P0300

- [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.
- [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.