# P0300 on the 2009 Volkswagen Routan

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

- [10238933](https://open.wenmarpro.com/bulletins/10238933), 2023-07-10: To identify a misfiring cylinder when a random fault is set \(P0300\), utilize the following; Select PCM \(ECM\) from the module menu \(figure 1\). At the top of the screen, mouse over ?Monitors? to open the drop down list. Select OBD II monitors. From the OBD II monitor list \(figure 2\), scroll down and select ?Which cylinder is misfiring?\(figure 3\). A value block displaying all cylinder misfire counts can be viewed and also monitored while running to isolate the causal cylinder. Once the specific cylinder\(s\) have been isolated, proceed with misfire diagnosis to determine root cause and repair as necessary.