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18-102-22 REV. A
18 - Vehicle Performance
August 10, 2022

This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.

This bulletin supersedes Technical Service Bulletin (TSB) 18-102-22, date of issue May 24,
2022, which should be removed from your files. All revisions are highlighted with
**asterisks** and include and includes new Diagnostic Trouble Codes (DTCs), symptoms/
conditions, software enhancements and LOP.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update
(RSU) 21-027, date of issue March 05, 2021. All applicable Sold and Un-Sold RSU VINs have
been loaded. To verify this RSU service action is applicable to the vehicle, use VIP or
perform a VIN search in DealerCONNECT/Service Library. All repairs are reimbursable within
the provisions of warranty. This RSU will expire 18 months after the date of issue.
NOTE: This calibration update is only for vehicles that have had the updated CP3.3 design
High-Pressure Fuel Injection Pump installed. All other calibrations to support the CP4
design pump have been deactivated. DO NOT perform this calibration update unless
recall Y78 has been performed first.
SUBJECT:
Flash: Powertrain Control Module (PCM) Updates
OVERVIEW:
This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/
PCM) with the latest available software.
MODELS:
2020
2020

(DJ)
(D2)

RAM 2500 Pickup
RAM 3500 Pickup

NOTE: This bulletin applies to vehicles within the following markets/countries: North
America.
NOTE: This bulletin applies to vehicles equipped with a 6.7L I6 Cummins Turbo Diesel
Engine (Sales Code ETL) or a 6.7L I6 Cummins HO Turbo Diesel Engine (Sales Code
ETM).
SYMPTOM/CONDITION:
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further
investigation the technician may find that one or more of the following (DTCs) have been set:
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**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. **

18-102-22 REV. A
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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:
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**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.

following improvements are also included in this update:
**Adaptive Cruise improvements at high altitude.
Ambient Air Pressure displayed correctly in wiTECH.**
Oil pressure switch modification.
Oil change monitor improvement for severe duty operation.
wiTECH “Fuel Injector Cutoff Test” fix.
wiTECH Mass Air Flow (MAF) Sensor data display additional fix.
Enabling wiTECH Particulate Matter (PM) Sensor Regeneration Test in PCM “Misc Functions”.
Engine Warm-up Protection Improvement to help promote better oil delivery to engine
bearings during cold starts.
• Hydrocarbon Desorption (HCD) Mode operational improvement. HCD mode resumes after key
cycle.
• Engine stumble improvement, during engine warm up (Sales Code ETM).
• Smoke improvement during highway driving and lower altitudes (sea level) (Sales Code ETM).

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18-102-22 REV. A

DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
DealerCONNECT/Service Library, verify all related systems are functioning as designed. If DTCs or
symptom conditions, other than the ones listed above are present, record the issues on the repair
order and repair as necessary before proceeding further with this bulletin.
If a customer’s VIN is listed in VIP or your RSU VIN list, perform the repair. If any vehicle not on the
VIN list exhibits the symptom/condition or DTC, perform the repair.
INSPECTION:
NOTE: The only calibration available will be for the updated CP3.3 design High-Pressure
Fuel Injection Pump (Fig. 1) . Please ensure that recall Y78 has been completed first
before proceeding with this update.
1. Inspect the High-Pressure Fuel Injection Pump to see which pump is currently installed on the
vehicle (Fig. 1) . Also review the vehicle VIP report to see if campaign Y78 has been
performed.

Fig. 1
CP3.3 Design Pump
1 - CP3.3 Design Pump From Top View.

18-102-22 REV. A

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2. Does the VIP report indicate that Y78 has been performed, and is the vehicle equipped with the
new design fuel injection pump released under the campaign?
• YES>>> Proceed to Step 1.
• NO>>> Perform the Y78 campaign first. Once the campaign is performed, new pump
installed and PCM updated, the PCM will have all of the updates listed in this document.
This Bulletin does not apply.
REPAIR PROCEDURE:
NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2 volts. Do
not allow the charging voltage to climb above 13.5 volts during the flash process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. Is the vehicle on the RSU VIN list?
• YES >>> Proceed to Step 2 of the Repair Procedure.
• NO>>> Proceed to Step 3 of the Repair Procedure.
2. Does the PCM have the latest software already installed?
• YES >>> This bulletin has been completed, use inspect LOP (18-19-04-AG) to close the
active RSU.
• NO >>> Proceed to Step 3 of the Repair Procedure.
3. Reprogram the PCM/ECM with the latest software. Detailed instructions for flashing control
modules using the wiTECH Diagnostic Application are available by selecting the application’s
“HELP” tab.
4. Is this vehicle equipped with the 68RFE automatic transmission?
• YES>>> Proceed to Step 5 of the repair procedure.
• NO>>> Proceed to Step 6 of the repair procedure.
5. Perform the transmission “Quicklearn” procedure. Follow the detailed service procedures
available in DealerCONNECT/Service Library, Service Info Section 08 - Electrical > 8E Electronic Control Modules > Module, Transmission Control > Standard Procedure >
Quicklearn.
6. Clear all DTCs that may have been set in any module due to reprogramming. The wiTECH
application will automatically present all DTCs after the flash and allow them to be cleared.
7. Using wiTECH, perform the 9Oil Life Restore9 procedure located in the ECM 9Misc Functions”.
POLICY:
Reimbursable within the provisions of the warranty.

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18-102-22 REV. A

TIME ALLOWANCE:
Labor Operation
No:
18-19-04-AG

**18-19-04-NS

18-19-04-NT

Description

Skill Category

Amount

Module, Engine Control (ECM) Inspect Only
(1 - Semi-Skilled)

10 - Diesel

0.2 Hrs.

10 - Diesel
Module, Engine Control (ECM) Perform Quicklearn Routine (68RFE
Transmission) - Inspect and Reprogram
(1 - Semi-Skilled)
10 - Diesel
Module, Engine Control (ECM) (Aisin Transmission) - Inspect and
Reprogram
(1 - Semi-Skilled)

0.5 Hrs.

0.4 Hrs.**

NOTE: The expected completion time for the flash download portion of this procedure is
approximately 10 minutes. Actual flash download times may be affected by vehicle
connection and network capabilities.
FAILURE CODE:
The dealer must choose which failure code to use depending on if this is a Rapid Response
Transmittal (RSU) or Technical Service Bulletin.
• The “RF” failure code is required for essential module flash/reprogramming and can only be
used after confirmation that the VIN is included on the RSU.
• The failure code “RF” (Required Flash) can no longer be used on Technical Service Bulletin
flashes. The “RF” failure code must be used on an RSU.
• If the customer’s concern matches the SYMPTOM/CONDITION identified in the Technical
Service Bulletin, failure code CC is to be used. When utilizing this failure code, the 3C’s must
be supplied.
RF

Required Flash - RSU

CC

Customer Concern