# Service bulletin 1804323

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: 10236913
- Published by NHTSA: 2023\-05\-30
- Manufacturer's number: 1804323
- Manufacturer's date: 2023\-04\-14
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

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 document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10236913-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10236913-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Trouble codes named

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

## Vehicles listed

- 2022 ALFA ROMEO STELVIO

## Other bulletins for the same vehicles and component

- [22D Combo Rev1](/bulletins/11037356.md), 2026-09-17, Warranty extension: ELECTRICAL SYSTEM. Emissions Recall 22D \- On Board Diagnostics \- Dealer Notification \(Revision 1\)
- [22D Combo](/bulletins/11037271.md), 2026-09-10, Warranty extension: ELECTRICAL SYSTEM. Emissions Recall 22D \- On Board Diagnostics \- Dealer Notification
- [S2623000037](/bulletins/11033309.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Condensation Or Water Infiltration In Headlights, Daytime Running Lights \(DRL\), Turn Signals, Fog Lights, Taillights.
- [S2621000003 REV.A](/bulletins/11030138.md), 2026-03-18, Service bulletin: POWER TRAIN. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV, 8HP75\-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [S1408000384 REV.J](/bulletins/11030035.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM. 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
- [S1408000384 REV.I](/bulletins/11028904.md), 2026-02-19, Service bulletin: ELECTRICAL SYSTEM. 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
- [08\-394\-25 REV. A](/bulletins/11026677.md), 2025-12-17, Service bulletin: ELECTRICAL SYSTEM. Telematics Box Module \(TBM\) Backup Battery Replacement When DTC B1E21 Is Present Technicians may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code \(DTC\): ● B1E21\-96 \- Backup Battery Component Internal Failure.
- [9100734](/bulletins/11026660.md), 2025-12-17, Service bulletin: ELECTRICAL SYSTEM. If the DTC B1E21\-96: Backup Battery\-Component Internal Failure is active and customer states Popup message will show at the radio: "Battery of Uconnect Box requires service. SOS call and related functions may be unavailable. Please visit an authorized dealer." PLEASE do not Replace the TBM module, only replace TBM Internal Battery \(inside Telematics Box Module\) and order PN68493347
- [108687](/bulletins/11026575.md), 2025-12-11, Service bulletin: ELECTRICAL SYSTEM. Radio\- Multi Media
- [S2508000101](/bulletins/11025514.md), 2025-11-13, Service bulletin: ELECTRICAL SYSTEM. Intermittent Uconnect Box Requires Service Message. TBM Setting Stored Or Pending DTCs B22A9, B1560, B1561, B1562

JSON: [/v1/bulletins/10236913](/v1/bulletins/10236913)

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