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 EXHAUST GAS PRESSURE SENSOR TUBE AND PRESSURE SENSING PORTS
1. Remove the steel tube between the Exhaust Manifold and the Exhaust Gas Pressure Sensor port (located on the water outlet connection).
  NOTE:
  The orifice in the water outlet connection is 2 mm in diameter. Closely inspect this location as it can accumulate debris.
  
  Is the pressure tube and pressure sensor ports located in the manifold and water outlet connection free from debris?
  
  Yes
  - Go To 2.
  No
  - Clean the tube and pressure sensing ports.
  - Go To 2.
CHECK THE THERMOSTAT OUTLET
1. Remove the Exhaust Gas Pressure Sensor from the thermostat outlet.
  NOTE:
  Carefully make sure the sensing end of the Exhaust Gas Pressure Sensor is clear. The Exhaust Gas Pressure Sensor diaphragm can be damaged if a tool is inserted into the end of the sensor. Take care not to damage the sensor.
  
  Is the outlet and sensor free of debris?
  
  Yes
  - Go To 3.
  No
  - Remove debris from outlet and wipe the sensor with a clean cloth. Reinstall pressure tube and sensor and retest.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
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 - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4.
CHECK THE EXHAUST GAS PRESSURE 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 5.
  No
  - Replace the Exhaust Gas Pressure Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE EXHAUST GAS PRESSURE 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 Gas Pressure Sensor reading.
  Does the value fluctuate slightly, indicating the sensor is not stuck?
  
  Yes
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace the Exhaust Gas Pressure Sensor.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .