# P0306 on the 2012 Jeep Wrangler

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 P0306

- [10229945](https://open.wenmarpro.com/bulletins/10229945), 2023-01-17: MIL Illumination: P0300, P0302, P0304 or P0306 \(X56 Warranty Extension\)
- [10229899](https://open.wenmarpro.com/bulletins/10229899), 2023-01-17: MIL Illumination: P0300, P0302, P0304 or P0306 \(X56 Warranty Extension\) This bulletin involves checking for excessive cylinder leakage and replacing the cylinder head if necessary. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the Technician may find that any the following Diagnostic Trouble Codes have been set: P0300\- Multiple Cylinder Misfire P0302\- Cylinder 2 Misfire P0304\- Cylinder 4 Misfire P0306\- Cylinder 6 Misfire
- [10221067](https://open.wenmarpro.com/bulletins/10221067), 2022-09-26: MIL Illumination: P0300, P0302, P0304 or P0306 \(X56 Warranty Extension\) This bulletin involves checking for excessive cylinder leakage and replacing the cylinder head if necessary. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the Technician may find that any the following Diagnostic Trouble Codes have been set: P0300\- Multiple Cylinder Misfire P0302\- Cylinder 2 Misfire P0304\- Cylinder 4 Misfire P0306\- Cylinder 6 Misfire
- [10139897](https://open.wenmarpro.com/bulletins/10139897), 2018-06-11: MIL Illumination: P0300, P0302, P0304 or P0306 \(X56 Warranty Extension\) This bulletin involves checking for excessive cylinder leakage and replacing the cylinder head if necessary. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the Technician may find that any the following Diagnostic Trouble Codes have been set: P0300\- Multiple Cylinder Misfire P0302\- Cylinder 2 Misfire P0304\- Cylinder 4 Misfire P0306\- Cylinder 6 Misfire
- [10139771](https://open.wenmarpro.com/bulletins/10139771), 2018-06-11: MIL Illumination: P0300, P0302, P0304 or P0306 \(X56 Warranty Extension\) This bulletin involves checking for excessive cylinder leakage and replacing the cylinder head if necessary. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the Technician may find that any the following Diagnostic Trouble Codes have been set: ? P0300\- Multiple Cylinder Misfire ? P0302\- Cylinder 2 Misfire ? P0304\- Cylinder 4 Misfire ? P0306\- Cylinder 6 Misfire
- [10139664](https://open.wenmarpro.com/bulletins/10139664), 2018-06-11: MIL Illumination: P0300, P0302, P0304 or P0306 \(X56 Warranty Extension\) This bulletin involves checking for excessive cylinder leakage and replacing the cylinder head if necessary. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: ? P0300\- Multiple Cylinder Misfire ? P0302\- Cylinder 2 Misfire ? P0304\- Cylinder 4 Misfire ? P0306\- Cylinder 6 Misfire