# Service bulletin 21\-009\-20

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: 10173360
- Published by NHTSA: 2020\-04\-06
- Manufacturer's number: 21\-009\-20
- Manufacturer's date: 2020\-02\-11
- NHTSA component: POWER TRAIN; AIR BAGS; TRAILER HITCHES; WHEELS; EXTERIOR LIGHTING; BACK OVER PREVENTION; ELECTRICAL SYSTEM

## NHTSA's summary

Flash: Transmission Control Module \(TCM\) Updates This bulletin involves reprogramming the TCM 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 DTCs: P1DDE\-00 \- Ignition Run\-Start Input 1\-2 Correlation\(Sales Code DFR Only\). P1DF3\-00 \- ECU Not Initialized\(Sales Code DFR Only\). P0733\-00 \- Gear 3 Shift Incorrect Ratio \(while operating in 4\-Lo range\). P0716\-00 \- Input Shaft Speed Sensor 1 Performance. P0721\-00 \- Output Shaft Speed Sensor Circuit Performance. P1DB6\-00 \- Vehicle Speed Signal Performance. P1DAB\-00 \- Vehicle Speed Undetermined. P215C\-00 \- Output Shaft Speed Wheel Speed Correlation. P0607\-00 \- ECU Internal Performance. P1DAC\-00\-Engine Speed Undetermined. P07BF\-00 \- Input/Turbine Shaft Speed Sensor 1 Circuit Low. P07C0\-00 \- Input/Turbine Shaft Speed Sensor 1 Circuit High. P077C\-00 \- Output Shaft Speed Sensor Circuit Low. P077D\-00 \- Output Shaft Speed Sensor Circuit High. P177F\-00 \- Output Shaft Speed Sensor Out Of Range High. P1778\-00 \- Input\-Turbine Shaft Speed Sensor A Out Of Range High. P0731\-00 \- Gear 1 Shift Incorrect Ratio. P0979\-00 \- Shift Solenoid 3 Control Circuit Low. P1DCD\-00\-TCM Monitoring Processor Performance Multiple Clutches Locked Up. In addition, the following software enhancements are also available:Auto\-start Improvements. Low speed coast down bump improvements. Tip in bump improvements. Bump during tow/haul high throttle acceleration. Gear hunting during cruise resume. Gear hunting during uphill trailer tow. Cruise control under\-speed during uphill trailer tow. Gear hunting during highway speed operation. Hang in gear when driver desires earlier upshift/lower engine speed operation. Coast\-down downshift improvements for 6\-5, 5\-4 and 4\-3. Coast\-down downshift improvements for 2\-1. Cold temperature downshift improvements for 6\-5 and 4\-3. Cold temperature upshift improvements for 1\-2, 2\-3, 3\-4

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173360-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173360-9999.pdf)

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

## Components

Air bags, Driver assistance, Electrical system, Lighting, Trailer hitch, Transmission and driveline, Wheels, Backup camera

## Trouble codes named

P0607, P0716, P0721, P0731, P0733, P077C, P077D, P07BF, P07C0, P0979, P1778, P177F, P1DAB, P1DAC, P1DB6, P1DCD, P1DDE, P1DF3, P215C

## Vehicles listed

- 2019 RAM 1500

## Recalls for the same vehicles and component

- [20V191000](/recalls/nhtsa/20V191000.md), 2020-09-10: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

## Other bulletins for the same vehicles and component

- [96C Combo](/bulletins/11023334.md), 2025-09-24, Service campaign: ELECTRICAL SYSTEM; BACK OVER PREVENTION: WARNINGS. Customer Satisfaction Notification 96C – Park Assis Module \- Dealer Notification
- [103289](/bulletins/11014887.md), 2025-03-04, Service bulletin: BACK OVER PREVENTION: WARNINGS; LANE DEPARTURE: BLIND SPOT DETECTION. CAMERA \- REAR VIEW
- [S2208000045 REV.B](/bulletins/11011774.md), 2024-12-11, Service bulletin: BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING. Backup Camera Poor Image Quality Inspection
- [0900124](/bulletins/10251862.md), 2024-03-18, Service bulletin: BACK OVER PREVENTION. Cold Engine Ticking Noise The customer may describe a ticking noise from the exhaust manifold location\(s\) when cold. This bulletin involves replacing the exhaust manifolds.
- [S2025000001](/bulletins/10247967.md), 2024-01-02, Service bulletin: EXTERIOR LIGHTING; BACK OVER PREVENTION. Malfunction Indicator Lamp Illumination \(MIL\). Diagnostic Trouble Code \(DTC\) P203E ? Reductant Level Sensor 1 Circuit Intermittent\-Erratic Set.
- [9003357](/bulletins/10247905.md), 2024-01-02, Service bulletin: BACK OVER PREVENTION. ADAPTER, Engine Oil Filter \(Pentastar V6\) For all 2014MY replace the Oil Filter Adapter \(OFA\). For any other MY \(with mileage above 30,000\) review and follow instructions from STAR Online S1809000007 REV. C available on Dealer Connect. Also, consider the following: 1\) Remove OFA 2\) Replace only the oil inlet O\-ring and gaskets \(seals kit in SOL above\). 3\) Re\-install the OFA. For 2023MY and beyond use black O\-ring. For 2022MY and prior use red O\-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
- [0901923](/bulletins/10247472.md), 2023-12-18, Service bulletin: BACK OVER PREVENTION. Cold Engine Ticking Noise From Exhaust Manifold Area The customer may describe an ticking noise from the exhaust manifold location\(s\) when cold. This bulletin involves replacing the exhaust manifolds.
- [9100247](/bulletins/10247404.md), 2023-12-18, Service bulletin: BACK OVER PREVENTION; VEHICLE SPEED CONTROL. ERG Hydraulic Tensioner Before replacing any FEAD components, please check FEAD belt layout as per the engine sales code. Customer complaint may include a noise from under the hood described as a squeal, screech, squeak, chirp or belt\-related noise and/or noisy tensioner/pulley. Please refer to SOL\# S2309000007.
- [S2023000037](/bulletins/10243154.md), 2023-10-02, Service bulletin: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; STRUCTURE:BODY:ROOF AND PILLARS; BACK OVER PREVENTION. Wind Whistle Noise From Dash A Pillar Area While Driving
- [S1808000152](/bulletins/10243131.md), 2023-10-02, Service bulletin: VEHICLE SPEED CONTROL:ACCELERATOR PEDAL; BACK OVER PREVENTION. CEL \(Check Engine Lamp\) Illuminated, P057B Brake Pedal Position Sensor Performance

JSON: [/v1/bulletins/10173360](/v1/bulletins/10173360)

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