NUMBER:
GROUP:
DATE:

18-012-16
Vehicle Performance
February 11, 2016

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 SERVICE BULLETIN 18-094-15, DATED NOVEMBER
25, 2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE
HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE ADDITIONAL RELATED LOPS.
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.
THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE
TRANSMITTAL (RRT) 15-098. 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.
THE wiTECH SOFTWARE IS REQUIRED TO BE AT THE LATEST RELEASE BEFORE
PERFORMING THIS PROCEDURE.
SUBJECT:
Flash: 3.0L Powertrain Diagnostic and System Improvements
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:
2014

(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).

18-012-16

-2-

SYMPTOM/CONDITION:
A small number of 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 may have been set:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

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.
P241D-00 - Scr Inducement - Forced Engine Shutdown.
P204F-00 - Reductant System Performance.
P20E9-00 - Reductant Pressure Too High.
P1288-00 - NOX Sensor 1/2 Zero Offset Too High.
P2002-00 - Diesel Particulate Filter Efficiency Below Threshold.
P2299-00 - Brake Pedal Position / Accelerator Pedal Position Incompatible.
P208B-00 - Reductant Pump 1 Control Performance.
P0087-00 - Fuel Rail Pressure Too Low.
P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1.
P225C-00 - NOX Sensor Performance - Signal Stuck High Bank 1 Sensor 1.
P225D-00 - NOX Sensor 1/1 Performance - Signal Stuck Low.
P1289-00 - NOX Sensor 1/2 Zero Offset Too Low.
P2BA9-00 - NOX Exceedence - Insufficient Reagent Quality.
P2080-00 - Exhaust Gas Temperature Sensor Circuit Performance.
P2084-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor
2.
P0426-00 - Catalyst Temperature Sensor Circuit Performance Bank 1 Sensor 1.
P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor
3.
P062B-00 - Internal Control Module Fuel Injector Control Circuit Performance.
P0088-00 - Fuel Rail Pressure Too High.
P016F-00 - Closed Loop fuel Pressure Control At Limit - Pressure Too Low.
P009A-00 - Intake Air Temperature / Ambient Air Temperature Correlation.
P0234-00 - Turbocharger Overboost Condition.
P050E-00 - Cold Start Engine Exhaust Temperature Too Low.
P05F8-00 - Reductant Heater Control Module Performance.
P061B-00 - Internal Control Module Torque Calculation Performance.
P0128-00 - Thermostat Rationality.
P1D30-00 - Oil Viscosity Too Low.
P200A-00 - Intake Manifold Runner Performance - Bank 1.
P200B-00 - Intake Manifold Runner Performance - Bank 2.
P202E-00 - Reductant Injection Valve Circuit Performance.
P203E-00 - Reductant Level Sensor 1 Circuit Intermittent / Erratic.
P20BA-00 - Reductant Heater 1 Control Circuit Performance.
P20BE-00 - Reductant Pressure Line Heater Control Circuit Performance.
P225D-00 - NOX Sensor 1/1 Performance - Signal Stuck Low.

-3•
•
•
•
•

18-012-16

P24C2-00 - Exhaust Gas Temperature Measurement System - Multiple Sensor
Correlation Bank 1.
P24F2-00 - EGR Temperature / Charge Air Cooler Temperature Correlation.
U029D-00 - Lost Communication With NOX Sensor Module “A”.
U029E-00 - Lost Communication With NOX Sensor Module “B”.
U12A3-00 - Lost Communication with PM Sensor.

In addition to the DTCs listed above, customers may also experience one or more of the
following conditions:
•
•

Remote Start will not start the vehicle in cold ambient temperatures 14° F (-10° C).
Oil Life Monitor shows faster than expected oil life deterioration.

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.
Enhancements to improve A/C compressor relay duty cycle operation to prevent
ignition off battery draw.
Powertrain system improvements to enable EGR cleaning routine.

DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all vehicle systems are functioning as designed. If DTCs other than
the ones listed above 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, perform the Repair Procedure.
PARTS REQUIRED:
Qty.

Part No.

Description

1 (AR)

5146662AB

Catalyst Temperature Sensor

1 (AR)

5146661AB

EGT sensor 1/2

NOTE: The parts listed above may be needed to complete the repair, they are not
required to be changed.

18-012-16

-4-

REPAIR PROCEDURE:
1. 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.
2. Using wiTECH, Check the PCM calibration and see if it is up to date. Does the PCM
software need to be updated?
a. Yes>>> Proceed to Step #3.
b. 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.
3. 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.
NOTE: After PCM reprogramming, the following must be performed:
4. 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.
NOTE: If the module is up to date and no flashes are available use inspection LOP
18-19-04-CY to close the active RRT.
5. Under the PCM “System Tests” perform the “SCR DEF Tank Fluid Level Reset”
procedure.
6. Turn the ignition off for 35 seconds to complete the flash.
7. 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.
8. With the ignition key off, test for voltage on fuse F62 (10 amp red) located in the under
hood Power Distribution Center (PDC) using a volt meter connected to ground. Was
12 volts measured at the fuse with the ignition off?
a. Yes>>>Further diagnosis and repair is required. Refer to all applicable published
TSBs or service information in DealerCONNECT/TechCONNECT regarding ignition
off battery draw. Proceed to Step #9.
b. No>>> Proceed to Step #9.
9. 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?
a. Yes>>> Proceed to Step #10.
b. No>>> Proceed to Step #17.

-5-

18-012-16

10. 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.
11. 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.
12. 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

13. Was excessive soot found on the sensor?
a. Yes>>> Proceed to Step #14.
b. No>>> Proceed to Step #15.
14. Using shop air set to a maximum of 80 psi, clean all excessive soot from the sensor
probe.
15. 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.
16. Is the temperature sensor resistance within specifications?
a. 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.

18-012-16

-6-

b. 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.
17. 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, P20EE- SCR NOX Catalyst Efficiency Below Threshold Bank 1
or P2BA9-00 - NOX Exceedence - Insufficient Reductant Quality found setting in the
PCM memory?
a. 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.
b. 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-CY 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-CY

Module, Engine Control (ECM) Inspect Software Level Only (Includes
voltage Verification)
(1 - Semi-Skilled)

10 - Diesel

0.2 Hrs

**18-19-04-EE**

Module, Engine Control (ECM) Reprogram (Includes voltage
Verification)
(1 - Semi-Skilled)

10 - Diesel

0.4 Hrs.

-7-

18-012-16

RELATED LABOR OPERATIONS:
Labor Operation
No:

Description

Skill
Category

Amount

**18-19-04-51

EGT sensor, Clean and/or
replace
(2 - Skilled)

10 - Diesel

1.7 Hrs.

18-19-04-60

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