# Service bulletin 1806820

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: 10221889
- Published by NHTSA: 2022\-09\-26
- Manufacturer's number: 1806820
- Manufacturer's date: 2020\-08\-26
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Some 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:P1D30\-00 \- Oil Viscosity Too Low. Attempting to clear the DTC will be unsuccessful. P2453\-00 \- Diesel Particulate Filter Differential Pressure Sensor Circuit Performance. P0401\-00 \- EGR Flow Insufficient Detected. P0133\-00 \- O2 Sensor 1/1 Slow Response. P20EE\-00 \- SCR NOX Catalyst Efficiency Below Threshold Bank 1. P050E\-00 \- Cold Start Engine Exhaust Temperature Too Low. P0299\-00 \- Turbocharger Underboost Condition. P0402\-00 \- EGR Flow Excessive Detected. P245B \- EGR Cooler Bypass Control Circuit Performance. P20C6 \- Reductant Heater 4 Control Circuit Performance. P208B \- Reductant Pump 1 Control Performance. P249C \- Excessive Time To Enter Closed Loop Reductant Injection Control. P20E8\-00 \- Reductant Pressure Too Low. P20E9\-00 \- Reductant Pressure Too High. In addition, the following software enhancement is available:Ability to enable the ?Fuel System Cleaning? routine in wiTECH.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10221889-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10221889-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Trouble codes named

P0133, P0299, P0401, P0402, P050E, P1D30, P208B, P20C6, P20E8, P20E9, P20EE, P2453, P245B, P249C

## Vehicles listed

- 2017 RAM 1500

## Recalls for the same vehicles and component

- [18V332000](/recalls/nhtsa/18V332000.md), 2018-05-17: ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM:WIRING
- [2018081](/recalls/tc/2018081.md), 2018-02-08: Powertrain
- [18V100000](/recalls/nhtsa/18V100000.md), 2018-02-08: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2017659](/recalls/tc/2017659.md), 2017-12-21: Powertrain
- [17V821000](/recalls/nhtsa/17V821000.md), 2017-12-20: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
- [2017167](/recalls/tc/2017167.md), 2017-03-23: Powertrain
- [17V198000](/recalls/nhtsa/17V198000.md), 2017-03-23: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

## Other bulletins for the same vehicles and component

- [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.
- [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.
- [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
- [106241](/bulletins/11021585.md), 2025-08-06, Service bulletin: ELECTRICAL SYSTEM. LAMP \- DOME
- [104974](/bulletins/11019776.md), 2025-06-26, Service bulletin: ELECTRICAL SYSTEM. LAMP \- DOME
- [103774](/bulletins/11017451.md), 2025-05-01, Service bulletin: ELECTRICAL SYSTEM. LAMP \- DOME
- [S1408000384 REV.H](/bulletins/11013171.md), 2025-01-28, 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.G](/bulletins/11012777.md), 2025-01-09, 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

JSON: [/v1/bulletins/10221889](/v1/bulletins/10221889)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%201806820&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10221889&vehicle=Service%20bulletin%201806820)