Flash: Powertrain Diagnostic and System Enhancements
This bulletin
involves reprogramming the Powertrain Control Module (PCM) with thelatest available software.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination.
Upon further investigation, a technician may find the following DiagnosticTrouble Codes (DTCs) have been set:U1400-00 - Implausible TPS Signal Received
P1D73
- AGS Performance -(Active Grill Shutter).
P0171
- Fuel System 1/1 Lean.
P0174
- Fuel System 2/1 Lean.
The following Diagnostic
Trouble Codes (DTCs) have been changed from a one trip fault to atwo trip fault:P0335 - Crankshaft Position Sensor Circuit.
P0339 - Crankshaft Position Sensor Intermittent.
P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1.
P0344 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 1.
P0345 - Camshaft Position Sensor Circuit - Bank 2 Sensor 1.
P0349 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 1.
P0365 - Camshaft Position Sensor Circuit - Bank 1 Sensor 2.
P0369 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 2.
P0390 - Camshaft Position Sensor Circuit - Bank 2 Sensor 2.
P0394 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 2.
The technician may also find the following DTC stored
in the Anti-lock Brake System (ABS) Module memory:The following Diagnostic Trouble Code (DTC) is caused by a calibration
in the PCM that is in conflict with the ABS Module programming. Thenew software flash will correct this issue.C121C-00
- Torque Request Signal Denied.
This software release also includes:Improvement at lower ambient temperatures for Engine Stop/Start
(ESS) Starts.
Improvements to vehicle drivability during a cam sensor and/or crank
sensor malfunction.
Transmission
quick learn.
Engine
enhancements.
