Question about Chrysler 300

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I have a 2005 Chrysler 300 with a 3.5 liter engine. I have codes of P0406 and P0157. Please advise a repair suggestion plan. Thanks, Lou

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  • loustoy235 Jul 09, 2010

    It was helpful but still left me with questions of how to check to see if the EGR position sensor and o2 sensor actually need to be replaced. Will probably submit that question if someone doesn't reply to this with help by telling me how to check them first before replacing them.

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  • P0406-EGR POSITION SENSOR CIRCUIT HIGH EGR SOLENOID ASSEMBLY Needs to be checked replaced.
    P0157
    -O2 SENSOR 2/2 CIRCUIT LOW
    In this both the O2 sensor needs to be checked. Check out both the sensor.Bank 1 and bank 2.



    Thanks. Keep updated for any more query. You can rate this solution and show your appreciation
  • Posted on Jul 09, 2010

    • raj somaiya
      raj somaiya Jul 09, 2010

      1)---Turn the ignition on.
      With the DRBIIIt, read the EGR Position Sensor voltage.
      Is the voltage below 0.2 of a volt?
      Yes ! Go To 2
      No ! Go To 10
      --------------------
      2)--Turn the ignition off.
      Disconnect the EGR Solenoid harness connector.
      Turn the ignition on.
      Measure the voltage of the 5 Volt Supply circuit in the EGR Solenoid harness
      connector.
      Is the voltage between 4.5 to 5.2 volts?
      Yes ! Go To 3
      No ! Go To 7
      -----------------------
      3)-- Turn the ignition off.
      Disconnect the EGR Solenoid harness connector.
      With the DRBIIIt, monitor the EGR Position Sensor voltage.
      Turn the ignition on.
      Is the voltage above 4.5 volts?
      Yes ! Replace the EGR Solenoid Assembly.
      No ! Go To 4
      -----------------
      4)-- Turn the ignition off.
      Disconnect the EGR Position harness connector.
      Disconnect the PCM harness connector.
      Measure the resistance between ground and the EGR Position Sensor Signal circuit
      at the EGR Position harness connector.
      Is the resistance below 100 ohms?

      Yes ! Repair the short to ground circuit in the EGR Position Sensor
      Signal circuit.
      No ! Go To 5.
      -----------------
      5) Turn the ignition off.
      Disconnect the EGR Position harness connector.
      Disconnect the PCM harness connector.
      Measure the resistance between the EGR Position Sensor Signal circuit and the
      Sensor ground circuit in the EGR Position harness connector.
      Is the resistance below 100 ohms?
      All
      Yes ! Repair the short to Sensor ground in the EGR Position Sensor
      Signal circuit.
      No ! Go To 6
      -----------------
      6) NOTE: Before continuing, check the PCM harness connector terminals for
      corrosion, damage, or terminal push out. Repair as necessary.
      If there are no possible causes remaining, view repair.
      ------------
      7) Turn the ignition off.
      Disconnect the EGR Solenoid harness connector.
      Disconnect the PCM harness connector.
      Measure the resistance between ground and the 5 Volt Supply circuit at the EGR
      Solenoid harness connector.
      Is the resistance below 100 ohms?
      Yes ! Repair the short to ground in the 5 Volt Supply circuit.
      No ! Go To 8
      ---------------
      8) Turn the ignition off.
      Disconnect the EGR Solenoid harness connector.
      Disconnect the PCM harness connector.
      CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
      THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS
      RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
      MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
      Measure the resistance of the 5 Volt Supply circuit from the EGR Solenoid harness
      connector to the appropriate terminal of special tool #8815.
      Is the resistance below 5.0 ohms?
      Yes ! Go To 9
      No ! Repair the open in the 5 Volt Supply circuit.
      -------------
      next steps continued in next comments.This procedure is to check out egr but its bit technical part of the vehicle and requires proper too to get it tested.If no required tools then it will be bit difficult to get it checked.




    • raj somaiya
      raj somaiya Jul 09, 2010

      9)--NOTE: Before continuing, check the PCM harness connector terminals for
      corrosion, damage, or terminal push out. Repair as necessary.
      If there are no possible causes remaining.
      ----------
      10)---------NOTE: The engine will run rough and possibly stall in the following test.
      Feather the accelerator pedal to keep the engine from stalling.
      Start the engine.
      With the DRBIIIt, enter Engine System Test and then EGR System Test. Push the
      4=VARIABLE function.
      Monitor the EGR voltage while slowly pushing the up arrow.
      Is the voltage change smooth?
      Yes ! Test Complete.
      No ! Replace the EGR Solenoid Assembly.
      ------------
      Thanks.




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