2022 Alfa Romeo Stelvio MIL and Shifting TSB
A technical service bulletin (NHTSA ID 10236927) addresses Malfunction Indicator Lamp (MIL) illumination and harsh shifting issues in the 2022 Alfa Romeo Stelvio. This TSB involves a software update for both the Transmission Control Module (TCM) and Powertrain Control Module (PCM).
Marcus Weber2022 Alfa Romeo Stelvio
Owners of the 2022 Alfa Romeo Stelvio may encounter various performance issues, including the illumination of the Malfunction Indicator Lamp (MIL) or experiencing harsh and erratic shifting. These symptoms are addressed by a manufacturer communication identified by NHTSA ID 10236927, which outlines a necessary software update for key control modules.
Symptoms Owners May Notice
Customers might observe their vehicle's dashboard displaying a "Malfunction Indicator Lamp (MIL) illumination." Beyond this warning light, some drivers may also experience the vehicle exhibiting "Harsh or erratic shifting between any gear," which can affect overall driving comfort and performance. These issues indicate a need for attention to the vehicle's control systems.
Fault Codes (DTCs) Associated with These Issues
When diagnosing the Alfa Romeo Stelvio MIL illumination or shifting problems, technicians may find specific Diagnostic Trouble Codes (DTCs) stored in the vehicle's system. These codes pinpoint the nature of the detected faults:
| Code | Description |
|---|---|
| P043E-00 | EVAP System Leak Detection Reference Orifice Low Flow |
| P2C33-00 | Crankcase Pressure Sensor B Circuit Range/Performance |
| P2C91 | Crankcase Ventilation System - Hose 9B9 Disconnected |
| P00B2-00 | Radiator Coolant Temperature Sensor Circuit Range-Performance |
| P304A-00 | Fuel Rail Pressure Sensor 1 - Out Of Range High |
| P304E-00 | Fuel Rail Pressure Sensor 2-Out Of Range High |
| P02D2-00 | Cylinder 4 Fuel Injector 9A9 Offset Learning At Min Limit |
| P0607-00 | Control Module Performance |
| P0072-00 | Ambient Air Temperature Sensor Circuit Low |
| P0073-00 | Ambient Air Temperature Sensor Circuit High |
Repair Procedure Summary
The resolution for these conditions, including the Alfa Romeo Stelvio MIL illumination and shifting concerns, involves reprogramming the Transmission Control Module (TCM) with the latest available software. It is crucial to note that for this update to be effective, the Powertrain Control Module (PCM) must also be updated simultaneously. This dual module flash ensures that both critical control units are running compatible and optimized software versions.
Important Warnings
This bulletin explicitly states that an "Additional module flash is required for this update to be effective, the following module is to be updated along with this TCM update: Powertrain Control Module (PCM)." This means that simply updating the TCM alone will not fully resolve the issues; both modules must receive the software update.
Owner Action
If you own a 2022 Alfa Romeo Stelvio and are experiencing a Malfunction Indicator Lamp (MIL) illumination, harsh shifting, or any of the symptoms described, it is recommended to contact your authorized Alfa Romeo dealership. They have the necessary tools and software to perform the required Transmission Control Module (TCM) and Powertrain Control Module (PCM) updates as outlined in NHTSA ID 10236927.
Source: NHTSA ID 10236927
Frequently Asked Questions
- What does a Malfunction Indicator Lamp (MIL) illumination mean in my 2022 Alfa Romeo Stelvio?
- A MIL illumination, often referred to as a 'Check Engine Light,' indicates that the vehicle's onboard diagnostic system has detected a fault. For the 2022 Alfa Romeo Stelvio, this can be related to various issues, including those addressed by a software update for the Transmission Control Module (TCM) and Powertrain Control Module (PCM).
- Can harsh shifting in my Alfa Romeo Stelvio be fixed with a software update?
- Yes, according to NHTSA ID 10236927, harsh or erratic shifting in your 2022 Alfa Romeo Stelvio can be resolved by reprogramming the Transmission Control Module (TCM) and the Powertrain Control Module (PCM) with the latest software versions.
- What are some common DTCs associated with the 2022 Alfa Romeo Stelvio MIL illumination?
- Several DTCs can trigger the MIL, including P043E-00 (EVAP System Leak), P2C33-00 (Crankcase Pressure Sensor B), P00B2-00 (Radiator Coolant Temperature Sensor), and P0607-00 (Control Module Performance). These codes, among others, are addressed by the software update.
- Do I need to update both the TCM and PCM for this fix?
- Yes, the manufacturer communication explicitly states that both the Transmission Control Module (TCM) and the Powertrain Control Module (PCM) must be updated for the software flash to be effective in resolving the reported issues.
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