MIL ON/ DTC P0401 Set
Engine Control Module: Customer Interest
Engine Controls - MIL ON/ DTC P0401 Set
NUMBER: 18-014-11
GROUP: Vehicle Performance
DATE: March 16, 2011
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 LEVEL MUST BE AT RELEASE 11.03 OR HIGHER TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: MIL Illumination P0401 - EGR System Performance
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2011
(KA)
Nitro
2011
(KK)
Liberty
NOTE:
This bulletin applies to models equipped with a 3.7L engine (sales code EKG) and an automatic transmission (DGV) built before February 23, 2011
(MDH 0223XX).
SYMPTOM/CONDITION:
Some customers may complain of MIL illumination. No other symptoms will be noted or experienced. Further investigation by the technician may find
DTC P0401 - EGR System Performance is set.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as
designed. If DTC's other then the one listed above are present record them on the repair order and repair as necessary before proceeding further with this
bulletin.
PARTS REQUIRED:
REPAIR PROCEDURE:
1. Reprogram the PCM with the latest software. Follow the detailed service procedures available in DealerCONNECT/TechCONNECT, Refer To
Group 8 - Electrical > Electronic Control Modules - Service Information > Module - Powertrain Control > Standard Procedures > PCM/ECM
Programming - Gas. After PCM reprogramming, the following must be performed:
a. Clear any DTC's that may have been set in other modules due to reprogramming. The wiTECH application will automatically present all DTCs
after the flash and allow the tech to clear them.
2. Type the necessary information on the "Authorized Modification Label" p/n 04275086AB and attach it near the VECI label.
POLICY:
Reimbursable within the provisions of the warranty.
