СИСТЕМА ECD, Diagnostic DTC:P1603

DTC Code DTC Name
P1603 Engine Stall History

DESCRIPTION

When the fuel pressure in the common rail drops below the threshold and the engine stalls, this DTC is stored.

P1603
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
During engine running at idle or higher speed for more than 1 minute

During engine running, common rail pressure drops to too low level (less than 12 MPa) and engine stalls

(1 trip detection logic)

  • Battery

  • Low quality fuel

  • Fuel injector compensation code

  • Fuel filter

  • Cylinder compression pressure

  • Injector assembly

  • Engine coolant temperature sensor

  • Glow system

  • Supply pump assembly

  • Common rail assembly

  • ECM
Related Data List
DTC No. Data List
P1603

  • Engine Speed

  • MAP

  • MAF

  • Coolant Temp

  • Battery Voltage

  • Engine Speed of Cyl #1 (to #4)

  • Intake Air

  • Target Common Rail Pressure

  • Fuel Press

  • Target Pump SCV Current

  • Injection Feedback Val #1 (to #4)

  • Injection Volume

  • Actual Throttle Position

  • Target EGR Pos.

  • Actual EGR Valve Pos.

  • EGR Close Lrn. Status

  • EGR Close Lrn. Val.

  • After Glow

INSPECTION PROCEDURE


  1. In order to obtain stable idling, glow system operation, fuel system operation and compression sufficient to maintain the target idling speed are necessary.

  2. Glow system


    1. The following malfunctions may be present in the glow system.


      1. Engine coolant temperature sensor malfunction.

      2. Glow plug malfunction.

      3. Glow relay malfunction.

  3. Fuel system


    1. The following malfunctions may be present in the fuel system.


      1. Fuel leakage.

      2. Problem with injector assemblies.

      3. Problem with supply pump assembly.

      4. Air in fuel pipe.

      5. Fuel filter clog.

  4. Engine assembly


    1. The following malfunctions may be present in the engine assembly.


      1. Insufficient compression.

    Tech Tips


    • In contrast to normal malfunction diagnosis for components, circuits and systems, DTCs P1603 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall.

      As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.

    • If any other DTCs are output, perform troubleshooting for those DTCs first.

    • Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

    • When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1603)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester on.

    3. Enter the following menus: Powertrain / Engine and ECT / DTC.

    4. Read DTCs.

      Result
      Result Proceed to
      P1603 A
      P1603 and other DTCs B

      Tech Tips

      If any DTCs other than P1603 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

    GO TO ENGINE DIFFICULT START OR STALLING Click here