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.

Other DTCS
1. Ignition On, Engine Not Running.
2. With The Scan Tool, Read DTCS.
  Are There Any Other DTCS?
  
  Yes
  - Repair All Other DTCS First.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
  No
  - Go To 2
Check The Emp Sensor Tube And Pressure Sensing Ports For Debris
1. Remove The Steel Tube Between The Exhaust Manifold And The Emp Sensor Port.
  Is The Pressure Tube And Pressure Sensor Ports Located In The Manifold Free From Debris?
  
  Yes
  - Go To 3
  No
  - Clean The Tube And Pressure Sensing Ports.
  - Go To 3
Check The Emp Sensor For Debris
1. Remove The Emp Sensor From The Exhaust Manifold.
  Is The Emp Sensor Free Of Debris?
  
  Yes
  - Go To 4
  No
  - Remove The Debris From The Exhaust Manifold Pressure (Emp) Sensor.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
Check The Air Inlet/Charge Air/Exhaust Gas Recirculation For Leaks
1. Check Vehicle/Engine For Leaks Of Inlet Air (Air Filter To Turbocharger), Charge Air (Turbocharger To Intake Manifold), Or EGR Gases (Exhaust Manifold To Intake Manifold). Refer To Diagnosis And Testing, 6.7L .
  Were There Any Leaks Detected?
  
  Yes
  - Repair Leak Condition.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
Exhaust Manifold Pressure (Emp) Sensor
1. Turn Ignition Switch On.
2. Wait Five Seconds After Ignition Switch Is Turned On.
3. With The Scan Tool, Read DTCS.
  Is P0471 Stored?
  
  Yes
  - Go To 6
  No
  - Replace The Exhaust Manifold Pressure (Emp) Sensor In Accordance With The Service Information. Refer To Sensor, Exhaust Pressure, Removal .
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
Check Emp Sensor Operation
1. With The Scan Tool, Erase DTCS.
2. Start The Engine And Let It Idle For One Minute.
3. With The Scan Tool, Monitor The Exhaust Manifold Pressure (Emp) Sensor Reading.
  Does The Value Fluctuate Slightly, Indicating The Sensor Is Not Stuck?
  
  Yes
  - Repair Complete.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
  No
  - Replace The Exhaust Manifold Pressure (Emp) Sensor In Accordance With The Service Information. Refer To Sensor, Exhaust Pressure, Removal .
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .