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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 434 (6.7L Diesel - DTCS P0420 To P1208 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P04E2- Crankcase Ventilation Hose Connection Sensor Circuit Low >> 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. 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 the DTC return?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (K664) CRANKCASE HOSE PRESSURE SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the Crankcase Hose Pressure Sensor harness connector.
    3. Disconnect the PCM C1 harness connector.
    4. Measure the resistance between ground and the (K664) Crankcase Hose Pressure Signal circuit at the Crankcase Hose Pressure Sensor harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the (K664) Crankcase Hose Pressure Signal circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK THE (K664) CRANKCASE HOSE PRESSURE SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K664) Crankcase Hose Pressure Signal circuit between the Crankcase Hose Pressure Sensor harness connector and the PCM C1 harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the (K664) Crankcase Hose Pressure Signal circuit for an open/high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK THE CRANKCASE HOSE PRESSURE SENSOR 
    1. Reconnect the PCM C1 harness connector.
    2. Turn the ignition on.
    3. While monitoring the scan tool, use a jumper to connect the (F857) 5-Volt Supply circuit to the (K664) Crankcase Hose Pressure Signal circuit at the Crankcase Hose Pressure Sensor harness connector.

      Does the scan tool display DTC P04E3 active?

      Yes 

      • Replace the Crankcase Hose Pressure Sensor in accordance with the service information.
      • 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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