18-062-17

Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming of the Powertrain Control Module (PCM) with the latest software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set:U1424 - Implausible Engine Torque Signal Received. P0122 - Throttle Position Sensor 1 Circuit Low. P0123 - Throttle Position Sensor 1 Circuit High. P0222 - Throttle Position Sensor 2 Circuit Low. P0223 - Throttle Position Sensor 2 Circuit High. P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. P2227 - Barometric Pressure Circuit Performance. P3032 - Barometric Pressure Sensor Performance Plausibility. P0441 - Evap Purge System Performance. P0455 - Evap System Large Leak. P0335 - Crankshaft Position Sensor Circuit. P0339 - Crankshaft Position Sensor Intermittent. P0456 - Evap System Small Leak. In addition, the following software enhancements are available:Reduction in reverse gear lockout speed from 16 kph to 5 kph (10 mph to 3 mph) to improve MTX transmission durability(Sales Code DEC only). Improvement to Intake Air Sensor (IAS) accuracy calibration(Sales Code DEC only). Changes to Enhanced Automated Oil Change Indicator (EAOCI) calibration to more accurately determine maintenance interval based on engine loads and driving habits.