Service bulletins for the 2022 Alfa Romeo Stelvio
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
113 on file from NHTSA, as of 2026-10-19.
About P304A on the 2022 Alfa Romeo Stelvio: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P304A are shown. Show all
| 18-013-25 | 2025-03-11. Service bulletin. POWER TRAIN. "Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● **P0606-00 - Control Module Processor.** ● P043E-00 - EVAP System Leak Detection Reference Orifice Low Flow. ● P2C33-00 - Crankcase Pressure Sensor B Circuit Range/Performance. ● P2C91 - Crankcase Ventilation System - Hose ""B"" 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 ""A"" 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. The customer may also experience the following: ● Vehicle is in limp mode. This bulletin involves reprogramming both the Primary (ECM) and Secondary (ECM2) Engine Control Modules (ECMs) also known as Powertrain Control Modules (PCMs) with the latest available software." |
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| 2100923 | 2023-05-30. Service bulletin. FUEL SYSTEM, GASOLINE; POWER TRAIN; ELECTRICAL SYSTEM; BACK OVER PREVENTION; EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; SERVICE BRAKES, HYDRAULIC; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Flash: Transmission Control Module (TCM) Updates **Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) have been set: ? 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.**Some customers may experience the following: ? Harsh or erratic shifting between any gear. This bulletin involves reprogramming the TCM with the latest available software. NOTE: **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).** |
| 1804323 | 2023-05-30. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) have been set: ? 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. This bulletin involves reprogramming both the Primary (ECM) and Secondary (ECM2) Engine Control Modules (ECMs) also known as Powertrain Control Modules (PCMs) with the latest available software. NOTE: Additional module flash is required for this update to be effective, the following module is to be updated along with this PCM update: ? Transmission Control Module (TCM). |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.