Dodge Ram trucks are well-known for their power and ruggedness. However, like any vehicle, they can encounter issues that need to be addressed. One common problem with the Dodge Ram 1500 Ecodiesel is a P24A4 particulate filter restriction, where the exhaust filter is 90% full. In this article, we will explore the causes of this issue and learn how to regenerate a DPF (diesel particulate filter) to resolve it.
When a customer brings in their Dodge Ram with a check engine light and other warning lights on the dash, the first step is to confirm their complaint. Starting the engine and observing the check engine light remaining on confirms the issue. In this case, there is also a message stating “exhaust filter 90% full service required,” indicating a high level of soot inside the DPF.
This excessive soot accumulation is common in diesel vehicles with DPFs that are not driven often or don’t have access to highway driving. Highway driving enables the vehicle to regenerate the DPF by burning off accumulated soot. Without this regeneration process, the soot level inside the DPF can cause trouble codes to appear and lead to power loss and other problems.
To fix this issue, a regeneration process needs to be performed. This process burns off the soot inside the DPF, restoring its efficiency. However, before initiating the regeneration process, it is essential to clear the trouble codes stored in the engine computer. Once the codes are cleared, the vehicle can be driven outside to enable the regeneration process while ensuring that the exhaust gases do not pollute the shop.
To initiate the regeneration process, a scan tool is used to access the engine computer. The scan tool must be connected, and the coolant temperature must reach a minimum threshold before the regeneration can be activated. Once the regeneration is activated, the engine RPM will increase, and the regeneration process will begin. During this time, it is important to ensure the vehicle is in an open space, away from flammable materials, as the exhaust stream can become extremely hot.
After the required duration, the scan tool will indicate that the regeneration process is complete. The engine RPM will return to normal, and all warnings lights should be off. Once the regeneration is finished, the vehicle can be driven again to confirm that the check engine light does not return. Performing a rescan with the scan tool will help ensure that no trouble codes are present.
In the case of the Dodge Ram with the P24A4 particulate filter restriction, the regeneration process successfully resolved the issue. With the check engine light off and no messages on the dashboard, the vehicle is now in good condition. It is important to note that if the regeneration process does not solve the problem, the DPF might need to be removed and cleaned externally.
In conclusion, the Dodge Ram 1500 Ecodiesel can experience a P24A4 particulate filter restriction when the DPF is 90% full. This issue can be resolved by performing a regeneration process, which burns off the accumulated soot inside the DPF. Proper diagnosis with a scan tool, clearing of trouble codes, and ensuring the vehicle is in an open space during the regeneration process are essential steps. By following these steps, the check engine light can be eliminated, and the Dodge Ram can continue to perform at its best.
