# Service bulletin 2100923

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.

- Type: Service bulletin
- NHTSA id: 10236927
- Published by NHTSA: 2023\-05\-30
- Manufacturer's number: 2100923
- Manufacturer's date: 2023\-04\-14
- NHTSA component: 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

## NHTSA's summary

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 \(PCM\).\*\*

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10236927-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10236927-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes, Driver assistance, Electrical system, Engine, Fuel system, Lighting, Transmission and driveline, 12\-volt battery, Automatic transmission, Backup camera, Transmission control module

## Trouble codes named

P0072, P0073, P00B2, P02D2, P043E, P0607, P2C33, P2C91, P304A, P304E

## Vehicles listed

- 2022 ALFA ROMEO STELVIO

## Recalls for the same vehicles and component

- [25V667000](/recalls/nhtsa/25V667000.md), 2025-10-07: BACK OVER PREVENTION:DISPLAY FUNCTION

## Other bulletins for the same vehicles and component

- [S1408000384](/bulletins/10251783.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor \(IBS\) State of Charge \(SOC\) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes \(DTCs\), or Battery Warning Lamp On
- [1804123](/bulletins/10241137.md), 2023-08-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? \*\*P1CEA\-00 \- Boost Side EVAP Purge System Performance.\*\* ? P2AC0\-00 \- Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1. This bulletin involves reprogramming the PCM with the latest available software.
- [1804123A](/bulletins/10241060.md), 2023-08-21, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? P2AC0\-00 \- Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1. This bulletin involves reprogramming the PCM with the latest available software.
- [1804123](/bulletins/10236901.md), 2023-05-30, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? \*\*P1CEA\-00 \- Boost Side Evap Purge System Performance.\*\* ? P2AC0\-00 \- Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1. This bulletin involves reprogramming the PCM with the latest available software.
- [S1708000118](/bulletins/10229041.md), 2023-01-09, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Drain Concern, Dual USB Port Normal Operational Draw, Extended Illumination Or Extended Operation After Key Off
- [18\-069\-22](/bulletins/10214611.md), 2022-06-27, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module \(ECM\), also known as a PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code \(DTC\) has been set: P2AC0\-00 \- Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1.
- [2100622](/bulletins/10212419.md), 2022-05-31, Service bulletin: POWER TRAIN; EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Transmission Control Module \(TCM\) Updates This bulletin involves reprogramming the TCM with the latest available software. Some customers may experience the following:Harsh or erratic shifting between any gear.

JSON: [/v1/bulletins/10236927](/v1/bulletins/10236927)

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