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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 433 (6.7L Diesel - DTCS P0008 To P040D - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P0234-Turbocharger OVERBOOST Condition >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    If DTC P0107, P0108, P064F, P2227, P2228, P2229 or any EGR related DTCs are present, perform those test procedures before proceeding.

    NOTE:

    An Exhaust Restriction can set this DTC.

    NOTE:

    Unapproved software calibrations or Unauthorized Performance Enhancements can set this DTC.

    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. Turn the ignition on.
    6. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to STANDARD PROCEDURE .
  2. VERIFY THE ACCURACY OF THE INLET AIR PRESSURE SENSOR WITH THE SCAN TOOL 
    1. Connect the scan tool.
    2. Monitor the Intake Manifold Pressure.

      Is the value less than 203mm Hg (8 in-Hg)?

      Yes 

      • Go To  3

      No 

      • Replace the Inlet Air Pressure sensor in accordance with the :Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  3. VERIFY THE ACCURACY OF THE INLET AIR PRESSURE SENSOR WITH A MECHANICAL GAUGE 
    1. Turn the ignition off.
    2. Connect a mechanical intake manifold pressure gauge to the engine.
    3. Turn the ignition on.
    4. With the scan tool, erase DTCs.
    5. Start the engine.
    6. Compare the intake manifold pressure reading on the scan tool to the reading on the mechanical intake manifold pressure gauge.
      NOTE:

      The engine may need to be loaded before the pressure readings can be compared.

      Is the pressure difference greater than 127 mm Hg [5 in-Hg] between the scan tool and the mechanical gauge reading?

      Yes 

      • Replace the Inlet Air Pressure sensor in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. POWERTRAIN CONTROL MODULE 
    1. Unapproved software calibrations or Unauthorized Performance Enhancements can set this DTC.

      Is there evidence of unapproved software calibrations or Unauthorized Performance Enhancements?

      Yes 

      • Repair Complete.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Powertrain Control Module in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
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