Flash: Powertrain Diagnostic and System Enhancements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one of the following DTCs have been set:P0556 - Brake Booster Pressure Sensor Circuit Performance.
P040B - Exhaust Gas Recirculation Temperature Sensor 1 Circuit Performance(3.6L Only).
U1424 - Implausible Engine Torque Signal Received(2017 MY Only).
P2681 - Engine Coolant Bypass Valve Control Circuit Open(3.6L Only).
P2299-00 - Brake Pedal Position/Accelerator Pedal Position Incompatible.
B23C3 - Stop/Start Disable Switch 1/2 Correlation(3.0L and 3.6L Only).
The following DTCs have been changed from a one trip fault to a two trip fault for(3.0L and 3.6L Only):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.
P0365 - Camshaft Position Sensor Circuit - Bank 1 Sensor 2.
P0369 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 2.
P0345 - Camshaft Position Sensor Circuit - Bank 2 Sensor 1.
P0349 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 1.
P0390 - Camshaft Position Sensor Circuit - Bank 2 Sensor 2.
P0394 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 2.
In addition, customers may experience one of the following conditions:A shorter auxiliary battery life.
An illuminated Automatic Oil Change Indication (AOCI) light(3.6L Only).
Other enhancements included in this update:Improvements to vehicle drivability during a cam or crank sensor MIL condition(2017 MY Only).
Improved knock sensor performance.
