# Service bulletin 18\-069\-20 REV. A

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: 10181622
- Published by NHTSA: 2020\-10\-26
- Manufacturer's number: 18\-069\-20 REV. A
- Manufacturer's date: 2020\-09\-19
- NHTSA component: 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 oneor more of the following Diagnostic Trouble Codes \(DTCs\):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. U0402\-00 \- Implausible Data Received From TCM. P0299\-00 \- Turbocharger Underboost Condition. P0402\-00 \- EGR Flow Excessive Detected. P249C\-00 \- Excessive Time To Enter Closed Loop Reductant Injection Control. P208B\-00 \- Reductant Pump 1 Control Performance. P20C6\-00 \- Reductant Heater 4 Control Circuit Performance. P245B\-00 \- EGR Cooler Bypass Control Circuit Performance. In addition, customers may experience the following concern:Some vehicles may have experienced a slight engine hesitation or lag inacceleration from engine startup until the engine and exhaust warmed up. This update is intended to reduce the hesitation or lag in accelerationfrom engine startup. Other software enhancement.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-10181622-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181622-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P0133, P0299, P0402, P050E, P208B, P20C6, P20EE, P245B, P249C, U0402

## Vehicles listed

- 2018 RAM 1500

## Recalls for the same vehicles and component

- [2019206](/recalls/tc/2019206.md), 2019-04-26: Powertrain
- [19V324000](/recalls/nhtsa/19V324000.md), 2019-04-25: POWER TRAIN:DRIVELINE:DRIVESHAFT
- [2018447](/recalls/tc/2018447.md), 2018-08-23: Powertrain
- [18V556000](/recalls/nhtsa/18V556000.md), 2018-08-23: POWER TRAIN:AXLE ASSEMBLY
- [2018422](/recalls/tc/2018422.md), 2018-08-09: Powertrain
- [18V280000](/recalls/nhtsa/18V280000.md), 2018-05-01: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2018081](/recalls/tc/2018081.md), 2018-02-08: Powertrain
- [18V100000](/recalls/nhtsa/18V100000.md), 2018-02-08: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [S2621000004](/bulletins/11038329.md), 2026-10-07, Service bulletin: POWER TRAIN. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines \(850RE Transmission Only\)
- [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.
- [S2621000003](/bulletins/11029770.md), 2026-03-05, Service bulletin: POWER TRAIN. Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [101232](/bulletins/11010205.md), 2024-11-07, Service bulletin: POWER TRAIN. Plate \- Planetary
- [S2221000003](/bulletins/10248562.md), 2024-01-08, Service bulletin: POWER TRAIN. 8\-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
- [S2221000003](/bulletins/10244401.md), 2023-10-30, Service bulletin: POWER TRAIN. 8\-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
- [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
- [S1623000028 Rev.](/bulletins/10231735.md), 2023-02-13, Service bulletin: VEHICLE SPEED CONTROL; BACK OVER PREVENTION; POWER TRAIN; VISIBILITY; PARKING BRAKE. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [S2221000003](/bulletins/10229513.md), 2023-01-09, Service bulletin: POWER TRAIN. 8\-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
- [9003704](/bulletins/10229255.md), 2023-01-09, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN. Transmission Oil Pan, Heater \(TMU\), Tube or O\-ring Applies to vehicles equipped with 8 speed transmissions only; if you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. Please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. Please review the available quick connect and transfer tube parts, as replacement of the TMU may not be required. If a TOC line connection is found to be the source, the quick connect may need replacement. If the leak source is coming from the connection of the TMU to the transmission, the transfer tube may need replacement. When parts are returned to the QEC the retaining clips \(snap ring\) for the quick disconnect fittings are missing. \(This leaves a question as to whether the clips were missing from the assembly plant, or the technician removed them in order to make line removal easier.\) Please return the clips with the transmission heater and note if they were not there to begin with. For any questions regarding transmission heater, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.

JSON: [/v1/bulletins/10181622](/v1/bulletins/10181622)

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