# Service bulletin W23

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: 10176562
- Published by NHTSA: 2020\-06\-22
- Manufacturer's number: W23
- Manufacturer's date: 2020\-05\-12
- NHTSA component: FUEL SYSTEM, GASOLINE

## NHTSA's summary

Customer Satisfaction Notification U23 Fuel Pump Module

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176562-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176562-9999.pdf)

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

## Components

Fuel system

## Vehicles listed

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

## Recalls for the same vehicles and component

- [2021691](/recalls/tc/2021691.md), 2021-11-12: Fuel System
- [21V880000](/recalls/nhtsa/21V880000.md), 2021-11-12: FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP

## Other bulletins for the same vehicles and component

- [14\-010\-25 REV. B](/bulletins/11019433.md), 2025-06-10, Service bulletin: FUEL/PROPULSION SYSTEM. "Frequent Repairs Of Fuel System Components Such As Fuel Filters Numerous Stellantis vehicles having fuel line components replaced such as fuel filter. Occasionally, components are replaced before their standard life expectancy or when not contaminated with debris "
- [14\-010\-25 REV. A](/bulletins/11018863.md), 2025-06-02, Service bulletin: FUEL/PROPULSION SYSTEM. "Frequent Repairs Of Fuel Line Components Such As Fuel Filters Numerous Stellantis vehicles having fuel line components replaced such as fuel filter. Occasionally, components are replaced before their standard life expectancy or when not contaminated with debri "
- [14\-010\-25](/bulletins/11018485.md), 2025-05-20, Service bulletin: FUEL/PROPULSION SYSTEM. "Frequent Repairs Of Fuel Line Components Such As Fuel Filters Numerous Stellantis vehicles having fuel line components replaced such as fuel filter. Occasionally, components are replaced before their standard life expectancy or when not contaminated with debris "
- [1800824](/bulletins/10251873.md), 2024-03-18, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT; PARKING BRAKE; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, DIESEL; EXTERIOR LIGHTING; POWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). Flash: Powertrain Control Module \(PCM\) Updates 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: P0506\-00 \- Idle Control System RPM \- Lower Than Expected.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. P0299\-00 \- Turbocharger Underboost. P1D73\-00 \- AGS Performance. P0626 \- Generator Field Control Circuit High. P218F \- Reductant No Flow Detected. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P0191 \- Fuel Rail Pressure Sensor Circuit Performance. P0461 \- Fuel Level Sensor 1 Performance. P0401 \- EGR System Performance. P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P061A \- Level 2 Torque Performance. P061B \- Internal Control Module Torque Calculation Performance. P061E \- Internal Control Module Brake Signal Performance. P062C \- ETC Level 2 MPH Performance. P0106 \- Manifold Absolute Pressure Sensor Performance \(In extreme cold ambient temperatures\). P0116 \- Engine Coolant Temperature Sensor Performance. P0420 \- Catalyst System Efficiency Bank 1. P1507 \- Crankcase Filter Restriction. P203F \- Reductant Level Too Low. P226C \- Turbocharger Boost Control ?A? Slow Response \(In extreme cold ambient temperatures\). P2579 \- Turbocharger Speed Sensor Circuit. U0101 \- Lost Communication with TCM. U02A3 \- Lost of Communication with PM Sensor. U3017 \- Control Module Timer/Clock Performance. Customers may also experience one or more of the following Power
- [74912](/bulletins/10230085.md), 2023-01-17, Service bulletin: FUEL SYSTEM, GASOLINE. Fast Feedback Program \- 6.7L Cummins Engine \- 2019 \- 2022 HD Ram \& Fuel Injection Pump \- All Models \(Rev. G\)
- [S2214000005](/bulletins/10229768.md), 2023-01-17, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:AUXILLARY TANK. Upgrading To A Larger Capacity Fuel Tanks
- [S2207000003](/bulletins/10229759.md), 2023-01-17, Service bulletin: ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. Suspected Internal Exhaust Gas Recirculation \(EGR\) Cooler Coolant Leak, Additional Diagnostics.
- [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.
- [85507](/bulletins/10229517.md), 2023-01-09, Service bulletin: FUEL SYSTEM, GASOLINE. Warranty Bulletin D\-19\-02 Fast Feedback Program \- 6.7L Cummins Engine \& Fuel Injection Pump \- 2019 \- 2023 HD Ram ? All Models \(Rev. J\)
- [82294](/bulletins/10229093.md), 2023-01-09, Service bulletin: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Warranty Bulletin D\-19\-02 Fast Feedback Program \- 6.7L Cummins Engine \& Fuel Injection Pump \- 2019 \- 2022 HD Ram \- All Models \(Rev. I\)

JSON: [/v1/bulletins/10176562](/v1/bulletins/10176562)

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