Flash: 6.7L Diagnostic And System Improvements - 2015 RAM 2500/3500 Pickup

NUMBER: 18-015-18
GROUP: 18 - Vehicle Performance
DATE: February 23, 2018

 

THIS BULLETIN SUPERSEDES SERVICE BULLETIN 18-034-17, DATED APRIL 06, 2017, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDES ADDITIONAL DIAGNOSTIC TROUBLE CODES (DTCS), SYMPTOMS/CONDITIONS, NEW FAILURE CODE STATEMENT AND LOPS.

FOR HELP WITH USING wiTECH FOR ECU FLASH REPROGRAMMING, CLICK ON THE APPLICATION’S “HELP” TAB.

THE wiTECH SOFTWARE IS REQUIRED TO BE AT THE LATEST RELEASE BEFORE PERFORMING THIS PROCEDURE.

 

SUBJECT:

Flash: Powertrain Diagnostic and System Improvements

 

OVERVIEW:

This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/ PCM) with the latest available software.

 

MODELS:

2015 (DJ) RAM 2500 Pickup
2015 (D2) RAM 3500 Pickup

NOTE: This bulletin applies to vehicles equipped with a 6.7L Cummins Diesel engine (Sales Code ETK).

 

SYMPTOM/CONDITION:

A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find one or more of the following DTCs set in the PCM memory:

  • **P202E - (Diesel Exhaust Fluid) Reductant Injector Performance.
  • P24A5 - EGR Cooler Bypass Bank 1 Control Stuck.
  • P1C55 - NOx Sensor Intermittent – Bank 1 Sensor 1.
  • P0301 - Cylinder 1 Misfire.
  • P0302 - Cylinder 2 Misfire.
  • P0303 - Cylinder 3 Misfire.
  • P0304 - Cylinder 4 Misfire.
  • P0305 - Cylinder 5 Misfire.
  • P0306 - Cylinder 6 Misfire.
  • P020A - Fuel Injector 1 Performance.
  • P020B - Fuel Injector 2 Performance.
  • P020C - Fuel Injector 3 Performance.
  • P020D - Fuel Injector 4 Performance.
  • P020E - Fuel Injector 5 Performance.
  • P020F - Fuel Injector 6 Performance.
  • U0001 - Can C Bus.**
  • P1451 - Diesel Particulate Filter System Performance.
  • P229E - NOx Sensor Circuit - Bank 1 Sensor 2.
  • P218F - Reductant No Flow Detected.
  • P242F - Diesel Particulate Filter Restriction - Ash Accumulation.
  • P205E - (Diesel Exhaust Fluid) Reductant Tank Temperature Sensor Circuit Intermittent (setting when the block heater is plugged in).
  • U110E - Lost Ambient Temperature Message.
  • P20E8 - (Diesel Exhaust Fluid) Reductant Pressure Too Low.
  • P2281 - Air Leak Between MAF And Throttle Body.
  • P1477 - Intake Air Diverter Valve Position Sensor Circuit Shorted To Ground.
  • U1421 - Implausible Ignition Key Off Time Received.
  • P026B - Injection Timing Performance.

 

In addition to addressing the above DTCs, the following powertrain system improvements/ enhancements are also included in this software release:

  • **A/C pressure sensor update.
  • Improvements made to reduce misfire.
  • wiTECH engine cooling fan actuation test update.**
  • Improved Exhaust Gas Recirculation (EGR) valve response.
  • Over Running Clutch (ORC) software improvement.
  • Unpleasant odor in the vehicle at low speeds during regeneration cycle.
  • Selective Catalytic Reduction (SCR) efficiency improvement in cold weather.
  • Enhanced software for a No crank/No start issue. (U0100 - Lost Communication With ECM/ PCM). (Sales Code DG7).
  • Ambient Air Temperature (AAT) improvements.
  • 68RFE Transmission overall shift quality improvements.
  • Charging system improvements for single alternator applications (Changes the cutout threshold from 600 to 500 RPM).
  • Charging system improvements for dual alternator applications.
  • Diesel Exhaust Fluid (DEF) system calibration improvement during Stationary Regeneration.
  • Cold idle speed stability improvement.
  • Torque increase to 865 ft/lbs (D2 vehicles equipped with the Aisin transmission sales code DF2 only).
  • Fuel filter minder calibration changes.
  • wiTECH Fuel Pressure Override and Fuel System Run Up test improvements.

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