Updating the 6.7L Ram

This bulletin applies to 2016 Dodge Ram 3500 Cab Chassis trucks equipped with a 6.7L Cummins diesel engine.
The following DTCs have been changed from a one-trip fault to a two-trip fault:
P2280...........air flow restriction/leak between the air cleaner and MAP sensor
P203C..........diesel exhaust fluid reductant level sensor circuit low
P208D.........diesel exhaust fluid reductant pump control circuit high
Customers may experience a MIL on and the technician may find the following DTCs set in the PCM memory:
P218F..........reductant no flow detected
P202E..........reductant injector performance
U0001-00.....CAN C bus
P1C55..........NOx sensor intermittent – Bank 1, sensor 1
P24A5..........EGR cooler bypass – Bank 1 control stuck
P207F..........reductant quality performance
P218F..........reductant no flow detected
U110E..........Lost ambient temperature message
Programming will be needed. The following improvements/enhancements are also included in the latest software release:
- Fuel pressure override test improvement for wiTECH
- AC pressure sensor error threshold change
- No-crank/no-start fix
- Ambient air temperature improvements
- Stationary de-soot with wiTECH fix
Using a scan tool (wiTECH), verify that all related systems are functioning as designed. Record and repair as needed before programming. Install a battery charger to keep battery voltage between 13.2 and 13.5 volts.
If DTC U1601 is present, the ECM P/N did not update or the engine did not start after the flash, the flash may have been unsuccessful. Restart the flash update. Reprogram the ECM/PCM with the latest software. Clear all DTCs that may have set in other modules. Perform the PCM Configuration routine in wiTECH, located in the PCM “Misc Functions” menu.