2022-2025 Alfa Romeo Stelvio EVAP System Detector TSB

Alfa Romeo has released Technical Service Bulletin (TSB) 9100469, titled "GPOP - Issue Review System," to provide crucial guidance for technicians diagnosing issues related to the evaporative emission (EVAP) system in certain Stelvio models. This bulletin, dated December 16, 2024, specifically addresses the correct replacement procedure when an issue is identified with the Alfa Romeo Stelvio EVAP module detector.

The original document for this TSB is exceptionally brief, containing only a few lines of text. It serves primarily as a clarification for service personnel rather than a detailed diagnostic or repair procedure. Despite its brevity, the instruction provided is vital for ensuring accurate and cost-effective repairs.

Important Clarification for Technicians

The core message of TSB 9100469 is a direct instruction regarding component replacement. It states: "If an issue is detected with the EVAPORATIVE SYSTEM INTEGRITY MODULE DETECTOR and not the VAPOR CANISTER, only replace the EVAPORATIVE SYSTEM INTEGRITY MODULE DETECTOR."

This guidance is critical because it prevents unnecessary replacement of the entire VAPOR CANISTER when only the smaller, often separately replaceable, Evaporative System Integrity Module Detector is at fault. Misdiagnosis could lead to higher repair costs and wasted parts. The TSB emphasizes precision in identifying the faulty component within the EVAP system.

What is the Evaporative System Integrity Module Detector?

The Evaporative Emission Control (EVAP) system in your Alfa Romeo Stelvio is designed to prevent fuel vapors from escaping into the atmosphere. A key component of this system is the Evaporative System Integrity Module Detector. This module is responsible for monitoring the EVAP system for leaks and ensuring its proper function.

It typically contains a pump that creates a small vacuum or pressure in the EVAP system and sensors to detect any leaks. When a leak or malfunction is detected, it often triggers a "Check Engine" light on the dashboard. The TSB clarifies that when this specific detector is the source of the problem, and not the larger VAPOR CANISTER, technicians should focus their replacement efforts on the detector itself.

Manufacturer's Guidance (TSB 9100469)

The TSB lists several part numbers associated with this issue, which likely correspond to the Evaporative System Integrity Module Detector or related components. These part numbers include 68400620A$, 68402531A$, 68528496A$, and 68534104A$. When diagnosing an EVAP system fault, particularly one pointing to the Alfa Romeo Stelvio EVAP module detector, technicians should refer to these part numbers to ensure the correct component is ordered and installed.

What Owners Should Know

If you own a 2022-2025 Alfa Romeo Stelvio and experience a "Check Engine" light related to the EVAP system, it's important to have your vehicle diagnosed by a qualified service technician. This TSB helps ensure that your vehicle receives the most accurate and efficient repair. The instruction to replace only the Evaporative System Integrity Module Detector, rather than the entire vapor canister, can potentially save on repair costs and time.

Always consult with your authorized Alfa Romeo dealer for diagnosis and repair of any vehicle issues. They have access to the latest technical information, including TSB 9100469, and specialized tools to correctly identify and resolve problems with your Alfa Romeo Stelvio EVAP module detector.

NHTSA ID: 11011985