# Service bulletin 1805021

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: 10223498
- Published by NHTSA: 2022\-10\-17
- Manufacturer's number: 1805021
- Manufacturer's date: 2021\-05\-22
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: P0133 \- O2 Sensor 1/1 Slow Response. P0153 \- O2 Sensor 2/1 Slow Response. P0171 \- Fuel System 1/1 Lean. P0174 \- Fuel System 2/1 Lean. P0300 \- Multiple Cylinder Misfire. P0301 \- Cylinder 1 Misfire. P0302 \- Cylinder 2 Misfire. P0303 \- Cylinder 3 Misfire. P0304 \- Cylinder 4 Misfire. P0305 \- Cylinder 5 Misfire. P0306 \- Cylinder 6 Misfire. P0307 \- Cylinder 7 Misfire. P0308 \- Cylinder 8 Misfire. B2286 \- Calibration Not Learned / Lost Calibration. The customer may also experience one or more of the following:Hesitation feel during a pedal tip in, while engine is warming up below \-1 °C \(30 °F\) ambient temp. During a 2 \- 3 transmission upshift, the engine is hitting rev limit. ?Service Suspension? message in Instrument Panel Cluster \(IPC\) on start up.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10223498-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10223498-9999.pdf)

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

## Components

Electrical system, Transmission and driveline, Software

## Trouble codes named

B2286, P0133, P0153, P0171, P0174, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308

## Vehicles listed

- 2021 RAM 1500

## Other bulletins for the same vehicles and component

- [0802924](/bulletins/10251876.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Radio Over The Air Update from LR34.51 to LR35.41 Software Version Customer may experience one or more of the following: ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from LR34.51 to LR35.41. NOTE: National launch for this FOTA update is expected to begin Feburary 19, 2024.
- [0802824](/bulletins/10251875.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Radio Over The Air Update from QR39.82F to QR40.12 Software Version Customer may experience one or more of the following: ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from QR39.82F to QR40.12. NOTE: National launch for this FOTA update is expected to begin Feburary 19, 2024.
- [0802624](/bulletins/10251870.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Radio Over The Air Update from QR39.5 to QR40.11 Software Version Customer may experience one or more of the following: ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from QR39.5 to QR40.11. NOTE: National launch for this FOTA update is expected to begin Feburary 19, 2024.
- [0802524](/bulletins/10251867.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Radio Over The Air Updating to QR40.12 Software Version Customers may experience one or more of the following: ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone, when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from QR39.2 to QR40.11. NOTE: National launch for this FOTA update is expected to begin February 19, 2023.
- [ReferenceY40](/bulletins/10251816.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. Customer Satisfaction Notification Y40 Control Module Software Updates
- [0825223](/bulletins/10248948.md), 2024-01-16, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER. Radio Over The Air Update to LR34.31 to LR35.41 Software Version Customers may experience one or more of the following: ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from LR34.31 to LR35.41. NOTE: The National launch for this FOTA update campaign is expected to begin December 04, 2023.
- [0824523](/bulletins/10248941.md), 2024-01-16, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Over The Air Update to Q339.3 to QR39.62 Software Version Customers may experience one or more of the following: ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from Q339.3 to QR39.62. NOTE: The National launch for this FOTA update campaign is expected to begin December 04, 2023.
- [0818123](/bulletins/10242828.md), 2023-09-25, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Over The Air Updating to QR40.12 Software Version ? Mobile Wi\-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone, when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from QR39.62 and QR39.57 to QR40.12. NOTE: National launch for this FOTA update is expected to begin August 16, 2023
- [BulletinA](/bulletins/10240002.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer Satisfaction Notification ZD7 \- Radio Software Update
- [0812923](/bulletins/10239978.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; UNKNOWN OR OTHER. Radio Over The Air Updating from PR39.92 to PR40.12 Software Version ? Radio Wi\-Fi Hotspot connection not working. This bulletin provides information regarding the latest Firmware Over The Air \(FOTA\) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated from PR39.92 to PR40.12. NOTE: National launch for this FOTA update is expected to begin June 23, 2023.

JSON: [/v1/bulletins/10223498](/v1/bulletins/10223498)

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