Flash: 2.4L Powertrain Diagnostic And System Improvements
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with new software.
A small number of customers may experience a Malfunction Indicator Lamp (MIL)
illumination. Upon further investigation the Technician may find one of the following
Diagnostic Trouble Codes (DTCs). Additionally this PCM update includes the
enhancements listed below.
2015 KL Vehicles equipped with a 2.4L engine (Sales Code ED6 or ED8) built on or
before October 21, 2014 (MDH 1021XX).
? P2172 - High Airflow/Vacuum Leak Detected.
? P219A - Air-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM.
? Improved software to enable Transmission Control Module (TCM) quick learn
enhancements once TCM is updated.
2014 KL Vehicles equipped with a 2.4L engine (Sales Code ED6).
? P2172 - High Airflow/Vacuum Leak Detected.
? P219A - Air-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM.
? P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range.
? P2251 - O2 Sensor 1/1 Negative Current Control Circuit Open.
? P0031 - O2 Sensor 1/1 Heater Circuit Low.
