# P0304 on the 2015 Ram Promaster 2500

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 P0304

- [10137057](https://open.wenmarpro.com/bulletins/10137057), 2018-05-21: Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory: · \*\*P0335 \- Crankshaft Position Sensor Circuit. · P0456 \- EVAP System Small Leak. · P2610 \- PCM Internal Engine Off Timer Performance.\*\* · P0300 \- Multiple Cylinder Misfire. · P0301 \- Cylinder 1 Misfire. · P0302 \- Cylinder 2 Misfire. · P0303 \- Cylinder 3 Misfire. · P0304 \- Cylinder 4 Misfire. · P0305 \- Cylinder 5 Misfire. · P0306 \- Cylinder 6 Misfire. · P0307 \- Cylinder 7 Misfire. · P0308 \- Cylinder 8 Misfire.