NUMBER: 18-019-16
GROUP: Vehicle Performance
DATE: February 18, 2016
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 18-095-15, DATED NOVEMBER 25, 2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE ADDITIONAL RELATED LOP TIME ALLOWANCE.
THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE TRANSMITTAL (RRT) 15-095. ALL APPLICABLE SOLD AND UN-SOLD RRT VIN’s HAVE BEEN LOADED. TO VERIFY THAT THIS RRT SERVICE ACTION IS
APPLICABLE TO THE VEHICLE, USE VIP OR PERFORM A VIN SEARCH IN TECHCONNECT. ALL REPAIRS ARE REIMBURSABLE WITHIN THE PROVISIONS OF WARRANTY.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS AVAILABLE BY SELECTING “HELP” THEN “HELP CONTENTS” AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.
THE wiTECH SOFTWARE IS REQUIRED TO BE AT THE LATEST RELEASE BEFORE PERFORMING THIS PROCEDURE.
SUBJECT:
Flash: 3.0L Powertrain Diagnostic And System Enhancements
OVERVIEW:
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. It also involves the cleaning or replacement of the Exhaust Gas Temperature (EGT) Sensor 1/2 and/or Catalyst Temperature Sensor if necessary depending on Diagnostic Trouble Codes (DTCs) that may have set.
MODELS:
| 2015 | (WK) | Jeep Grand Cherokee |
NOTE: This bulletin applies to vehicles equipped with a 3.0L diesel engine (Sales Code EXF) and 8 speed transmission (Sales Code DFD).
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 Diagnostic Trouble Codes (DTCs) set in the PCM memory:
- P1296-00 – EGR Slow Response – Increasing Flow.
- P249C-00 – Excessive Time To Enter Closed Loop Reductant Injection Timing Control.
- P20C2-00 – Reductant Heater 3 Control Circuit Performance.
- P1297-00 – EGR Slow Response – Decreasing Flow.
- P0420-00 – Catalyst Efficiency (Bank 1).
- P2237-00 – O2 Sensor 1/1 Pump Cell Current Circuit Open.
- P24D1-00 – Particulate Matter Sensor Regeneration Incomplete.
- U0422-00 – Implausible Data Received From Body Control Module.
- P1E0C-00 – Empty Fuel Tank.
- P2463-00 – Diesel Particulate Filter – Soot Accumulation.
- P24A4-00 – Particulate Filter Restriction – Soot Accumulation Too High.
- P2299-00 – Brake Pedal Position/Accelerator Pedal Position Incompatible.
- P208B-00 – Redundant Pump 1 Control Performance.
- P1288-00 – NOX Sensor 1/2 Zero Offset Too High.
- P2002-00 – Diesel Particulate Filter Efficiency Below Threshold.
- P204F – Reductant System Performance.
- P241D-00 – SCR Inducement – Forced Engine Shutdown.
- P20E9 – Reductant Pressure Too High.
Upon further investigation a technician may find the following Diagnostic Trouble Code (DTC) set in the TCM memory:
- U1424-00 – Implausible Engine Torque Signal Received.
The following enhancements are also included in this software update.
- DTC P0171-00 System Too Lean (Bank 1) has now changed to P026C-00 Fuel Injection Quantity Lower Than Expected.
- DTC P0172-00 System Too Rich (Bank 1) has now changed to P026D-00 Fuel Injection Quantity Higher Than Expected.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all vehicle systems are functioning as designed. If DTCs are present, record them 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 RRT VIN list, perform the repair. For all other customers that describe the symptom/condition listed above or if the technician finds the DTC, perform the Repair Procedure.
PARTS REQUIRED:
| Qty. | Description | Part No. |
|---|---|---|
| 1 (AR) | Catalyst Temperature Sensor | 5146662AB
Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API |
| 1 (AR) | EGT sensor 1/2 | 5146661AB No products found. |
NOTE: The parts listed above may be needed to complete the repair but are not required to be changed.
REPAIR PROCEDURE:
- Using wiTECH, check for any codes setting in the PCM and record them on the repair order. If necessary, perform a vehicle scan report and save it for your records.
- Using wiTECH, Check the PCM calibration and see if it is up to date. Does the PCM software need to be updated?
- Yes>>> Proceed to Step #3.
- No>>> Proceed to Step #7.
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.
CAUTION: Do not interrupt the software update process in any way once it has begun. It may cause permanent damage to the PCM which will require replacement.
- Reprogram the PCM with the latest available software. Detailed instructions for flashing control modules using the wiTECH Diagnostic Application are available by selecting the “HELP” tab on the upper portion of the wiTECH window, then “HELP CONTENTS.” This will open the Welcome to wiTECH Help screen where help topics can be selected.
- 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.
- Under the PCM “System Tests” perform the “SCR DEF Tank Fluid Level Reset” procedure.
- Turn the ignition off for 35 seconds to complete the flash.
- Verify the Transmission Control Module (TCM) is programmed with the latest available software. Refer to all applicable published service bulletins for detailed repair procedures and labor times regarding updating the TCM software.
- Refer back to the vehicle scan report recorded in Step #1. Is DTC P0420-00 – Catalyst Efficiency (Bank 1), found setting active or stored in the PCM memory?
- Yes>>> Proceed to Step #9.
- No>>> Proceed to Step #16.
- Remove the EGT Sensor 1/2 located in the inlet of the Diesel Particulate Filter (DPF)/Diesel Oxidation Catalyst (DOC) assembly. Refer to detailed removal procedures available in DealerCONNECT> TechCONNECT> Service Info Section 11 Exhaust System> Sensor, Exhaust Temperature> Removal> Exhaust Gas Temperature Sensor 1/2.
- Remove the Catalyst Temperature Sensor located in the middle of the Diesel Particulate Filter (DPF)/Diesel Oxidation Catalyst (DOC) assembly. Refer to detailed removal procedures available in DealerCONNECT> TechCONNECT> Service Info Section 11 – Exhaust System> Sensor, Exhaust Temperature> Removal> Catalyst Exhaust Temperature Sensor.
- Inspect the sensor body and probe for any signs of damage or excessive soot. See (Fig. 1).
Fig. 1 EGT Sensor Bank 1 Sensor 1
1 – Excessive soot blocking sensor ports
- Was excessive soot found on the sensor?
- Yes>>> Proceed to Step #13.
- No>>> Proceed to Step #14.
- Using shop air set to a maximum of 80 psi, clean all excessive soot from the sensor probe.
- Using a suitable multi-meter with appropriate test probes, test the resistance between the sensor connector terminals 1 and 2. With the sensor at room temperature, 65-75 °F (18-25 °C), the resistance should measure between 200 and 240 ohms.
- Is the temperature sensor resistance within specifications?
- Yes>>> Install the original EGT sensor 1/2 and/or Catalyst Temperature Sensor. Refer to detailed installation procedures available in DealerCONNECT> TechCONNECT> Service Info Section 11 – Exhaust System> Sensor, Exhaust Temperature> Installation> Exhaust Gas Temperature Sensor 1/2.
- No>>> Install a new EGT sensor 1/2 and/or Catalyst Temperature Sensor. Refer to detailed installation procedures available in DealerCONNECT> TechCONNECT> Service Info Section 11 – Exhaust System> Sensor, Exhaust Temperature> Installation> Exhaust Gas Temperature Sensor 1/2.
- Refer back to the vehicle scan report recorded in Step #1. Were DTCs P0171-00 System Too Lean (Bank 1), P0172-00 System Too Rich (Bank 1), P026C-00 Fuel Injection Quantity Lower Than Expected, and/or P026D-00 Fuel Injection Quantity Higher Than Expected, found setting active or stored in the PCM memory?
- Yes>>> Further diagnosis and repair is required. Refer to all applicable published TSBs or service information in DealerCONNECT/TechCONNECT regarding these DTCs. The bulletin is now complete.
- No>>> The bulletin is now complete. No further action is required. If the PCM software was already up to date, use labor op (18-19-04-CW) to close out the RRT portion of this service bulletin.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
| Labor Operation No: | Description | Skill Category | Amount |
|---|---|---|---|
| 18-19-04-CW | Module, Powertrain Control (PCM) Check Software Level Only (0 – Introduction) | 10 – Diesel | 0.2 Hrs |
| **18-19-04-EJ | Module, Powertrain Control (PCM) Reprogram (1 – Semi-Skilled) | 10 – Diesel | 0.4 Hrs.** |
RELATED LABOR OPERATIONS:
| Labor Operation No: | Description | Skill Category | Amount |
|---|---|---|---|
| **18-19-04-52 | EGT sensor, Clean and/or replace (2 – Skilled) | 10 – Diesel | 1.7 Hrs |
| 18-19-04-61 | Skid Plate Equipped (1 – Semi-Skilled) | 10 – Diesel | 0.2 Hrs.** |
NOTE: The expected completion time for the flash download portion of this procedure is approximately 9 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. If the customer came in with an issue and the dealer found updated software to correct that issue, use failure code CC, for all other use failure code RF.
- If the customer’s concern matches the SYMPTOM/CONDITION identified in the Service Bulletin, failure code CC is to be used.
- If an available flash is completed while addressing a different customer concern, failure code RF is to be used.
| CC | Customer Concern |
| RF | Routine Flash |
| ZZ | Service Action |
NUMBER: 18-019-16
GROUP: Vehicle Performance
DATE: February 18, 2016
18-095-15
18-022-15 REV. C
NUMBER: 18-022-15 REV. B
GROUP: Vehicle Performance
DATE: September 29, 2015
NUMBER: 18-022-15 REV. A
GROUP: Vehicle Performance
DATE: July 03, 2015
NUMBER: 18-022-15
GROUP: Vehicle Performance
DATE: March 14, 2015
Reprogramming
Chrysler J2534 Application Overview
Flash Availability - J2534/Pass Thru Device
Vehicle to Diagnostic Tool Reference Chart
Chrysler Recommended J2534 Devices
For Chrysler recommended J2534 device, see below table.
| J2534 Device | Firmware Version |
| CTC Vehicle Box * | 1.9 |
| UCAN 2 | 1.0 |
| Blue Streak -2534 Global Programmer | 2.10 |
| Actia I+ME Passthru | 2.07 |
* Chrysler recommends the CTC Vehicle Box Device for Chrysler SCI ECU reprogramming. SCI reprogramming is used on most PCMs and TCMs prior to the introduction of CAN bus vehicles which began in 2004 (Durango).
Click on the link below to:
Download J2534 Application
(Install the wiTECH 2.0 J2534 Application on your computer)
Download the Setup Utility
(Configure your microPod/MDP device)
Launch wiTECH 2.0
(Once subscription and users are assigned to a tool please follow this link to access wiTECH)
https://www.mopartsp.com/support
www.techauthority.com
- Advanced VCI Box, Industry-leading J2534 Pass-Thru Technology: This J2534 Pass-Thru Programmer is designed espically for technicians, independent shop owners, and DIY enthusiasts, enables fast, reliable computer-based programming. It supports all J2534 protocols—including the latest DoIP and CAN FD—ensuring full compatibility with both legacy and next-generation vehicles.
- High-Speed OEM-Level Diagnostics & Programming: Unlock true OEM functionality with comprehensive system diagnostics, guided troubleshooting, coding, adaptations, resets, and programming—all designed to slash repair time. This all-in-one tool eliminates the need for multiple OEM devices, boosting efficiency and cutting costs. Equipped with High-Speed USB, it delivers 10x more data per second than competing solutions
- Coverage for 17 Car Brands & Ultra Reliability: Works seamlessly for Chrysler, for Ford(Forscan), for GM, for Nissan, for Toyota, for Honda, for Subaru(SSM4), for Land Rover/Jaguar, for Volvo, for Wuling, for Volkswagen, for Mercedes-Benz, and for BMW. Backed by over 10000 real vehicle tests and benefit from a wealth of practical experience, this OEM reprogramming tool guarantees stable and exceptional performance
- User-Friendly RLink Platform & Expert Support: TOPDON’s proprietary driver management platform offers a clean interface and lifetime free updates. Access a rich library of real-world case studies to stay ahead of the curve. Backed by a support team with 10+ years of J2534 and automotive repair experience, we provide one-on-one assistance to resolve any technical issue.
- 6.6 ft USB-C Cable & Portable Storage Case: The RLink J2534 diagnostic tool features a 6.6ft USB 2.0 Cable and a 1.2 ft OBDII Extension Cable, allows to connection your computer easily outside the vehicle. The included handled carry case offers easy portability, storage, and hanging options—keeping your gear clean and ready to go, anywhere.
- J2534 Pass-Thru Programmer: TOPDON RLink J2534 is an advanced diagnostic and reprogramming tool that support all J2534 protocols, as well as D-PDU, CAN-FD and DoIP, ensuring compatibility with a wide range of modern vehicles. It offers extensive versatility with support for over 18 major automotive brands, including Chrysler, Ford, GM, Nissan, Toyota, Honda, Subaru, Land Rover/Jaguar, Volvo, Wuling, Volkswagen/Audi, Mercedes-Benz, and BMW. NOTE: Not compatible with Ford IDS diagnostic software
- All-in-One OEM Diagnostics: This J2534 ECU programming tool elevates your automotive repair capabilities to new heights by delivering complete OEM diagnosis. Boasting comprehensive full-system diagnostics, intuitive repair guides, advanced ECU programming and coding, common reset services, a vast library of repair information and more, this all-in-one solution empowers technicians to effortlessly tackle complex vehicle issues with ease. *Not compatible with 24V vehicles
- Proven Performance You Can Trust: Backed by over 10000 real vehicle tests and benefit from a wealth of practical experience, this OEM reprogramming tool guarantees stable and exceptional performance. Supported by TOPDON's dedicated technical experts with in-depth knowledge of both auto repair and J2534 Pass-Thru programming, the RLink J2534 provides prompt and professional assistance, ensuring a smooth setup and reliable compatibility
- Integrated Excellence, Always Up-to-Date: Featuring the exclusive RLink Platform to provide a streamlined experience with one-click driver installation and management, ensuring flawless integration with your OE software, maintaining the original performance quality. The built-in operation guide makes mastering OE software quick and easy, so you can get started right away. Plus, with lifetime free updates, your diagnostics will stay current with the latest drivers and innovations
- Efficiency Meets Versatility: Engineered to support three CAN channels simultaneously - CAN FD and CAN-CC included, giving you the edge in fast troubleshooting. To perfectly synchronized with the OE software, please diagnose with active subscriptions and make sure your computer system is running a compatible 64-bit Windows version (7, 8, 10 or later) to fully leverage the power of RLink J2534. *We don't provide extra OE software
- Dual WiFi & 10.1" Touchscreen: Provides a stable, high-speed wireless link 3x faster than bluetooth, and a responsive, professional interface. Topdon ONE obd2 scanner diagnostic tool ensures smooth, non-lagging diagnostic scan, boosting mechanic efficiency
- J2534 Pass-Thru Support: The included ONE VCI supports the J2534 standard, allowing it to function as a pass-thru device when paired with OEM diagnostic software.Through TOPDON’s RLink platform, technicians can perform dealer-level coding, expanding in-house capabilities without investing in multiple factory automotive scan tools
- OE Topology Mapping: Visualize the vehicle’s ECU network exactly as it’s built.Zoom, pan, and highlight specific modules to pinpoint component issues with precision.Topology mapping displays real-time communication between modules
- 50 Plus Service Functions: Covers high-demand services like ADAS calibration, DPF regen, TPMS reset, ABS bleed, and throttle adaptation.Expands your service menu, allows you to charge premium rates, and turns away zero jobs due to lack of tooling. Vehicle-specific functionality may vary
- Advaned ECU Coding: 10 of the most serviced brands in North America, including full ECU coding and flash hidden support for BMW, VW, Au-di, Benz, Porsche, Toyota, Ni ssan and more. Enables module replacement, feature customization, and personal settings with automatic backup or restore.Lets your shop safely offer high-margin customization services, attracting more customers and boosting profit
- [J2534 Pass-Thru Programmer] - TOPDON RLink J2534 is engineered for professional technicians, delivering OEM diagnostic and reprogramming capabilities. It supports all J2534 protocols, CAN-FD, DoIP, D-PDU. Compatible with 17 vehicle brands—such as Chrysler, Ford, GM, KIA, Hyundai, Nissan, Toyota, Honda, Subaru, Mitsubishi, MAZDA, Land Rover/Jaguar, Volvo, Volkswagen/Audi, Mercedes-Benz, and BMW. RLink J2534 can help reduce the cost of purchasing equipment from different brands.
- [All-in-One OEM Reprogramming and Diagnostics] - When seamlessly integrated with OEM diagnostic software, this dongle enables you to perform a wide range of functions, including ECU programming and coding, DTC reading and clearing, active tests, component matching, adaptations, rewriting, guided troubleshooting, and more. This all-in-one tool eliminates the need for multiple OEM devices, significantly boosting work efficiency.
- [Tested, Trusted, and Proven for Accuracy] - TOPDON RLink J2534 is renowned for its reliability, having successfully completed over 10,000 real-vehicle tests. The wealth of data and hands-on experience behind it ensures consistent performance and accurate results. You can trust this tool to deliver optimal performance.
- [One-Click Installation, Continuous Updates] - The exclusive TOPDON RLink platform streamlines installation with a one-click driver setup, allowing you to quickly access OEM software for diagnostic and reprogramming tasks. With lifetime free updates, your RLink J2534 stays current without any additional cost, ensuring reliable performance for the long term. *We don't provide extra OE software.
- [Works with Windows Compatibility and OEM Software Subscription] - The RLink J2534 supports three CAN channels - including CAN FD and CAN-CC, providing advantages in the process of rapid troubleshooting. Compatible with Windows 7, 8 and 10 (64-bit) and higher versions of the system. For full functionality, an active OEM software subscription is required for each supported vehicle brand. Please note that the dongle does not include OEM software, which must be purchased separately to access brand-specific diagnostic and reprogramming features.
- Upgraded Connector Design: The connector has been changed to prevent previous issues. If you bought the earlier model and encountered problems, message us for a hassle-free replacement—we've got you covered
- Made for GM, Ford & Chrysler Dealer-Level Access - Gain OEM-level diagnostics, ECU programming, coding, and bidirectional control with official OE software. Perform system resets and module customization across The Big 3 from one compact OBD2 to USB GM, Chrysler, and Forscan tool. *Does not support ECU diagnostics and programming for GM vehicles using DoIP protocol. Please verify compatibility before purchase
- Supports 8+ OE Software Platforms with One Tool - Work seamlessly across Forscan, FJDS, FDRS, Tech2Win, SPS 2, Techline, GDS2, and Witech 2.0. This J2534 pass-thru device lets you switch between platforms in seconds, streamlining workflow and reducing hardware costs. *No OE Software Provided, OE diagnostic software require separate subscriptions
- Reliable Forscan Adapter for Ford Diagnostics - The RLink X3 is a pro-grade Forscan OBD2 adapter, providing a stable connection for Ford, Lincoln, Mazda, and other Forscan software vehicles. Ideal for programming, module coding, and advanced vehicle configuration
- Broad Coverage for 2006 to 2025 GM, Ford & Chrysler Vehicles - Equipped with J2534 and CAN-FD protocols, this OBD2 connector supports model-year 2006 and newer vehicles. Handle the latest CAN-FD control systems with full compatibility across GM, Ford, and Chrysler platforms
- ALL OF THE J2534 PROTOCOLS - This single unit has all of the protocols you need for your OEM J2534 reprogramming and diagnostics including the latest in DoIP and CanFD
- J2534 TECHNICAL SUPPORT - FREE for the life of the tool. Staffed by technicians who understand vehicle repair and J2534 Pass‑thru
- TOOLBOX WITH OEM APPLICATION DESCRIPTIONS - educational video tutorials and real-time news – Giving you the confidence and up-to-date knowledge to get the job done
- J2534 v05.00 API - The newest version of J2534 to give you the latest in pass-thru technology
- FUTURE PROOF WITH 4 CAN CHANNELS - Going beyond the 3 required by select Chrysler/FCA models, CarDAQ-Plus 3 also provides a 4th to meet the needs of future OEM applications
Last update on 2026-06-07 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.