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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 835 (3.0L Diesel - DTCS P24B1-00 To U1489-00 - 1500) >> Diagnosis And Testing >> P2A00-00-O2 Sensor 1/1 Circuit Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECKING FOR INTAKE SYSTEM LEAK OR RESTRICTION 
    NOTE:

    This DTC will set due to poor engine performance as well as a faulty O2 Sensor. If the vehicle exhibits any fuel system or driveability issues, or has any other driveability DTCs present, repair those concerns before proceeding with this test.

    1. Turn the ignition off.
    2. Perform a thorough inspection of the intake system. Look for any leaks or restrictions. Pay special attention to the Charge Air Cooler and hoses.
    3. Remove the Mass Air Flow Sensor from the inlet tube.
    4. Seal off and/or plug the where the MAF sensor was removed.
    5. Connect the smoke machine 84-04 to the intake system where possible and begin injecting smoke into the system.
    6. Observe all intake system components for evidence of smoke leakage.

      Were any leaks or restrictions found?

      Yes 

      • Repair the leak or restriction in the intake system.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  2
  2. EXHAUST SYSTEM LEAK OR RESTRICTION 
    1. Perform a thorough inspection of the exhaust system. Look for any leaks or restrictions.

      Were any leaks or restrictions found?

      Yes 

      • Repair the leak or restriction in the exhaust system.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  3
  3. POOR EGR SYSTEM PERFORMANCE 
    1. Perform a thorough inspection of the EGR system. Look for signs of a leak or restriction.

      Is the EGR system operating properly?

      Yes 

      • Go To  4

      No 

  4. POOR FUEL SYSTEM PERFORMANCE 
    1. Perform the CHECKING THE FUEL DELIVERY SYSTEM diagnostic procedure. Refer to DIAGNOSIS AND TESTING .

      Is the fuel system operation normal?

      Yes 

      • Go To  5

      No 

  5. OXYGEN SENSOR 
    1. Replace the Oxygen Sensor in accordance with the Service Information. Refer to SENSOR, OXYGEN, REMOVAL .
    2. Reconnect the PCM C1 harness connector.
    3. Reconnect the O2 Sensor harness connector.
    4. Start the engine.
    5. Allow the engine to reach normal operating temperature. It may be necessary to test drive the vehicle to confirm repair.
    6. Monitor the scan tool for at least two minutes.
    7. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  6

      No 

  6. POWERTRAIN CONTROL MODULE 
    1. Disconnect all PCM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Using the recorded Freeze Frame and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read PCM DTCs.

      Did the DTC return?

      Yes 

      No 

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