# Service bulletin 1805522

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: 10220809
- Published by NHTSA: 2022\-09\-26
- Manufacturer's number: 1805522
- Manufacturer's date: 2022\-03\-18
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module \(ECM\) / PowertrainControl Module \(PCM\) with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or moreof the following Diagnostic Trouble Codes \(DTCs\) have been set: P0506\-00\-Idle Control System Rpm \- Lower Than Expected. P0088 \- Fuel Rail Pressure Too High \- Bank 1\(Sym Cam Only\) P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire\(Sym Cam Pump Only\). P0302\-00 \- Cylinder 2 Misfire\(Sym Cam Pump Only\). P0303\-00 \- Cylinder 3 Misfire\(Sym Cam Pump Only\). P0304\-00 \- Cylinder 4 Misfire\(Sym Cam Pump Only\). P0305\-00 \- Cylinder 5 Misfire\(Sym Cam Pump Only\). P0306\-00 \- Cylinder 6 Misfire\(Sym Cam Pump Only\). P1C54\-00 \- SCR NOx Catalyst Missing. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation\(68RFE Only\). P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1\(68RFE Only\). P1451\-00 \- Diesel Particulate Filter System Performance\(68RFE Only\). P0299\-00 \- Turbocharger Underboost. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P061B \- Internal Control Module Torque Calculation Performance. P064B\-00 \- PTO Control Module. The customer may also notice the following: PTO Customers: Allows E\-Stop to work in any gear. PTO customers that use remote start: Prevents PTO cancellation in cabfrom disabling remote start. Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off \(PTO\) intermittently turns off with no DTCs. In addition the following software enhancements are included:Engine oil pressure switch modification.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10220809-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10220809-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Trouble codes named

P0088, P0299, P0301, P0302, P0303, P0304, P0305, P0306, P0506, P0607, P061B, P064B, P1451, P1C54, P1D73, P20E8, P242F, P2463, P2706

## Vehicles listed

- 2020 RAM 3500
- 2020 RAM 4500
- 2020 RAM 5500

## Recalls for the same vehicles and component

- [2022644](/recalls/tc/2022644.md), 2022-11-10: Powertrain
- [22V835000](/recalls/nhtsa/22V835000.md), 2022-11-10: POWER TRAIN:AUTOMATIC TRANSMISSION
- [20V511000](/recalls/nhtsa/20V511000.md), 2020-08-27: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; ELECTRICAL SYSTEM:SOFTWARE
- [2020025](/recalls/tc/2020025.md), 2020-01-24: Powertrain
- [20V043000](/recalls/nhtsa/20V043000.md), 2020-01-24: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [9100901](/bulletins/11037344.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [113744](/bulletins/11035981.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113742](/bulletins/11035980.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113069](/bulletins/11034910.md), 2026-07-08, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. SWITCH – HEADLAMP
- [113070](/bulletins/11034909.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. SWITCH – HEADLAMP
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9100835](/bulletins/11033957.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000040](/bulletins/11033896.md), 2026-06-16, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.
- [S1623000028 REV.I](/bulletins/11033308.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [08\-208\-26 REV. A](/bulletins/11032842.md), 2026-05-20, Service bulletin: ELECTRICAL SYSTEM. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub \(no charging, no data\). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle.

JSON: [/v1/bulletins/10220809](/v1/bulletins/10220809)

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