# Service bulletin 1801221

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: 10212520
- Published by NHTSA: 2022\-05\-31
- Manufacturer's number: 1801221
- Manufacturer's date: 2021\-06\-26
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\)

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates OVERVIEW:

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10212520-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10212520-9999.pdf)

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

## Components

Electrical system, Engine, Transmission and driveline, Automatic transmission, Engine control module, Transmission control module

## Vehicles listed

- 2020 RAM 2500
- 2020 RAM 3500

## Recalls for the same vehicles and component

- [22V835000](/recalls/nhtsa/22V835000.md), 2022-11-10: POWER TRAIN:AUTOMATIC TRANSMISSION
- [20V043000](/recalls/nhtsa/20V043000.md), 2020-01-24: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [1806823](/bulletins/10239980.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; EXTERIOR LIGHTING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? P1404 \- EGR Position Sensor Rationality Closed. ? P2457 \- Exhaust Gas Recirculation Cooling System Performance. NOTE: P1404 \- EGR Position Sensor Rationality Closed DTC can be erroneously set when P2457 \-Exhaust Gas Recirculation Cooling System Performance DTC is set. In addition, the customer may notice one or more of the following conditions: ? \*\*Power Take Off \(PTO\) disable to high engine oil temperature \(DD DP with DF3 Only\).\*\* ? In PTO mode, transmission gear engagement is abrupt and idle speed is high when transitioning From Park To Drive/Reverse Gear. This bulletin involves reprogramming the PCM with the latest available software.
- [1806723](/bulletins/10239973.md), 2023-07-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. . This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) with the latest available software.
- [S1808000152](/bulletins/10234438.md), 2023-04-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). CEL \(Check Engine Lamp\) Illuminates, Recent PCM Replace or Flash Update Performed, Diagnostic Trouble Codes \(DTCs\) P057B Brake Pedal Position Sensor Circuit Performance, P1572 Brake Pedal Stuck, C0042\-54 Brake Pedal Missing Calibration
- [1810222REVA](/bulletins/10229552.md), 2023-01-09, Service bulletin: POWER TRAIN; FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain ControlModule \(ECM/PCM\) 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 \(DTCs\) have been set: P0506 \- Idle Control System RPM Lower Than Expected. P0299\-00 \- Turbocharger Underboost. P20EE\-00 \- NOx Catalyst Efficiency Below Threshold. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P1451\-00 \- Diesel Particulate Filter System Performance. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P026B \- Injection Timing Performance. P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P1C54\-00 \- SCR NOx Catalyst Missing. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Idle Instability. Harsh downshift clunk during exhaust brake deceleration. Diesel Exhaust Fluid \(DEF\) 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. Engine surge felt while driving\(Sales Code ETM\). Idle fluctuation.
- [S2008000186REVA](/bulletins/10229492.md), 2023-01-09, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ELECTRICAL SYSTEM. Engine Control Module \(ECM\) Flash Failure, Diagnostic Trouble Code \(DTC\) U1601 ? ECU Application Software Code 1 Missing Or Corrupted
- [S2208000073](/bulletins/10229059.md), 2023-01-09, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). No Start, After Flash And Or PCM Replace, DTC P0513 Invalid Skim Key Setting
- [1810222REVA](/bulletins/10225404.md), 2022-10-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain ControlModule \(ECM/PCM\) 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 \(DTCs\) have been set: P0506 \- Idle Control System RPM Lower Than Expected. P0299\-00 \- Turbocharger Underboost. P20EE\-00 \- NOx Catalyst Efficiency Below Threshold. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P1451\-00 \- Diesel Particulate Filter System Performance. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P026B \- Injection Timing Performance. P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P1C54\-00 \- SCR NOx Catalyst Missing. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Idle Instability. Harsh downshift clunk during exhaust brake deceleration. Diesel Exhaust Fluid \(DEF\) 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. Engine surge felt while driving\(Sales Code ETM\). Idle fluctuation.
- [1810222REVA](/bulletins/10225267.md), 2022-10-31, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; EXTERIOR LIGHTING; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; FUEL SYSTEM, GASOLINE; BACK OVER PREVENTION; POWER TRAIN; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, DIESEL. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain ControlModule \(ECM/PCM\) 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 \(DTCs\) have been set: P0506 \- Idle Control System RPM Lower Than Expected. P0299\-00 \- Turbocharger Underboost. P20EE\-00 \- NOx Catalyst Efficiency Below Threshold. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P1451\-00 \- Diesel Particulate Filter System Performance. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P026B \- Injection Timing Performance. P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P1C54\-00 \- SCR NOx Catalyst Missing. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Idle Instability. Harsh downshift clunk during exhaust brake deceleration. Diesel Exhaust Fluid \(DEF\) 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. Engine surge felt while driving\(Sales Code ETM\). Idle fluctuation.
- [1400220](/bulletins/10224072.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. 50 Gallon Fuel Tank Reconfiguration This bulletin involves inspecting the Powertrain Control Module \(PCM\) configuration data and performing the enable 50 gallon tank routine in wiTECH. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set:P0461 \- Fuel Level Sensor 1 Performance\(Set in the Powertrain Control Module \(PCM\)\).
- [S1918000003RevA](/bulletins/10223939.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Revision A: Intermittent Engine Buck, Surge, or Misfire.

JSON: [/v1/bulletins/10212520](/v1/bulletins/10212520)

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