18-051-16 REV. A

Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs set in the PCM memory: · **P1185 - General Pressure Sensor Correlation.** · P0101 - Mass Air Flow Sensor "A" Circuit Performance. · P050D - Cold Start Rough Idle. · P0335 - Crankshaft Position Sensor Circuit. · P2610 - PCM Internal Engine Off Timer Performance. P1607 - PCM Internal Shutdown Timer Rationality. · P0133 - O2 Sensor 1/1 Slow Response. · U0402 - Implausible Data Received From TCM. · U1424 - Implausible Engine Torque Signal Received. · P0456 - EVAP System Small Leak. · P0480 - Cooling Fan 1 Control Circuit/Open. **In addition, software enhancements include: · Improvement to 4-5 upshift.**