Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CHECK THE DEF DOSING CONTROL UNIT FOR PROPER MOUNTING
NOTE:
Perform the diagnostics for this DTC regardless or whether code is active or stored.
1. Visually inspect to ensure that the DEF Dosing Control Unit is mounted in the correct location on the vehicle.
2. Check that all the fasteners are properly installed and secured.
  Is the DEF Dosing Control Unit properly installed?
  
  Yes
  - Go To 2.
  No
  - Re-secure the DEF Dosing Control Unit properly.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR AN OBSTRUCTION OF AIRFLOW TO THE DEF DOSING CONTROL UNIT
1. Visually inspect for excessive debris on or around the DEF Dosing Control Unit.
2. Visually inspect for any aftermarket brackets or shields that can obstruct airflow to the DEF Dosing Control Unit.
  Is there any obstructions to the airflow to the DEF Dosing Control Unit?
  
  Yes
  - Repair the cause of the obstruction to the DEF Dosing Control Unit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Erase the DTC and test drive the vehicle. If the DTC returns, replace the DEF Dosing Control Unit in accordance with the service information. Refer to UNIT, Diesel Exhaust Fluid Dosing Control , Removal .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .