2021-2025 Jeep/RAM EVAP Fuel Filter Maintenance TSB 25-009-24

Owners of various 2021-2025 Jeep, RAM, and Alfa Romeo models are advised to pay close attention to their EVAP (Evaporative Emission Control System) fuel filters. A manufacturer communication, identified as TSB 25-009-24, highlights the importance of regularly checking these filters for restriction or blockage to ensure proper vehicle operation and emission control.

This advisory, issued on December 19, 2024, under internal reference 9100468, emphasizes that EVAP Fuel Filters, specifically the FUEL VAPOR CANISTER FILTER (part number 04627332A$), should be inspected on a regular schedule as detailed in the vehicle's Owner's Manual. If a restriction or blockage is found, the part should be replaced.

Understanding the EVAP System and Fuel Vapor Canister Filter

The EVAP system is a crucial component of your vehicle's emission control system. Its primary function is to prevent gasoline vapors from escaping into the atmosphere. The fuel vapor canister filter, also known as the charcoal canister filter, plays a vital role in this system by trapping fuel vapors from the fuel tank and storing them until the engine can burn them off. A properly functioning EVAP system helps reduce harmful emissions and maintain fuel efficiency.

Why Regular Inspection is Crucial

A restricted or blocked EVAP fuel filter can lead to various issues, including reduced engine performance, difficulty refueling, and potentially triggering a check engine light. While this TSB does not list specific symptoms, maintaining a clear EVAP system is essential for your vehicle's health and compliance with emission standards. For instance, a properly maintained Jeep Wrangler EVAP Fuel Filter ensures the system can breathe correctly.

Maintenance Recommendations and TSB 25-009-24

The manufacturer communication states that EVAP Fuel Filters must be checked for restriction or blockage on a regular schedule. This schedule is typically outlined in your vehicle's Owner's Manual. If an inspection reveals that the filter is restricted or blocked, replacement of the FUEL VAPOR CANISTER FILTER (part number 04627332A$) is necessary to restore the EVAP system's functionality. This proactive maintenance helps prevent potential issues before they escalate.

Special Considerations for Harsh Driving Conditions

For owners who frequently drive light-duty trucks in extreme dusty and dirty road conditions, there's an additional recommendation. These conditions can accelerate the clogging of the EVAP fuel filter. For such customers, TSB 25-009-24 references an available MOPAR Dual EVAP Filter kit. This kit is designed to offer enhanced filtration, but it's important to note that this specific upgrade is customer-paid and not covered under warranty.

Important Information for Owners

Owners should consult their vehicle's Owner's Manual for the recommended inspection intervals for the EVAP fuel filter. If you suspect a restriction or blockage, or if you drive in conditions that might lead to premature filter clogging, it is advisable to have your vehicle inspected by a qualified technician. While the standard replacement is typically a maintenance item, the MOPAR Dual EVAP Filter kit mentioned in TSB 25-009-24 is an optional upgrade for specific driving conditions and is not covered under warranty.

Part Information

The specific part identified in this communication is the FUEL VAPOR CANISTER FILTER, with part number 04627332A$.

Source: NHTSA ID 11012010