Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

DTC Active
1. Turn The Ignition On.
2. With The Scan Tool, Record All Freeze Frame Data.
3. With The Scan Tool, Erase DTCS.
4. Turn The Ignition Off For 75 Seconds.
5. Start The Engine And Let Idle For One Minute.
6. With The Scan Tool, Read DTCS.
  Did DTC P04E4 Return?
  
  Yes
  - Go To 2
  No
  - Perform The INTERMITTENT CONDITION Diagnostic Procedure. Refer To INTERMITTENT CONDITION .
Other DTCS
1. With The Scan Tool, Continue To Read DTCS.
  Does The Scan Tool Display DTC P04E2 Or DTC P04E3 Active?
  
  Yes
  - Perform The Diagnostics And Repairs For Those Active DTCS Before Proceeding With This Diagnostic Tree.
  No
  - Go To 3
Crankcase Hose Pressure Sensor
1. Turn The Ignition Off For 75 Seconds.
2. Turn The Ignition On, Engine Not Running.
3. Disconnect The Crankcase Hose Pressure Sensor.
4. With The Scan Tool, Read DTCS.
  Does The Scan Tool Display DTC P04E2 Active?
  
  Yes
  - Replace The Crankcase Hose Pressure Sensor In Accordance With The Service Information.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
  No
  - Replace The Powertrain Control Module In Accordance With The Service Information.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .