Diagnostic Test

WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR OTHER DTCs.
1. Turn the ignition on, engine not running.
2. With the scan tool, view the DTCs.
  Are any other DTCs Active or Pending?
  
  Yes
  - Repair all other active DTCs present and this DTC will become stored.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 2
COMPARE THE INTAKE AIR TEMPERATURE CIRCUIT
1. Let the vehicle cold soak for eight hours.
2. Connect the scan tool and monitor Intake Air Temperature, EGR Orifice Temperature, and Engine Coolant Temperature.
  NOTE:
  Make sure Ambient Air Temperature is above -6.7°C (20°F) when performing this test.
  
  NOTE:
  Make sure there is no external heat source, such as a heater, operating during this test or within the eight hour cold soak.
Does the Intake Air Temperature circuit read differently from the other temperature sensors?

Yes
- Replace the Intake Air Temperature (IAT) Sensor in accordance with the Service Information.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .