ECD SYSTEM (w/o DPF), Diagnostic DTC:P0069

DTC Code DTC Name
P0069 MAP Sensor Too High or Too Low

DESCRIPTION

To detect atmospheric pressure, the atmospheric pressure sensor built into the ECM is used in the common rail system. Following the changes in the atmospheric pressure, the ECM corrects the fuel injection volume, timing and duration, and adjusts the common rail internal fuel pressure for optimizing combustion.

DTC No. DTC Detection Condition Trouble Area
P0069

Atmospheric pressure sensor malfunction

(2 trip detection logic)

 ECM

INSPECTION PROCEDURE

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

Tech Tips

Read freeze frame data using an intelligent tester. Freeze frame data record 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, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO DTC P0069)


    1. Connect the intelligent tester to the DLC3.

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

    3. Select the following menu items: Powertrain / Engine / DTC.

    4. Read DTCs.

      Result
      Display (DTC Output) Proceed To
      P0069 and other DTCs A
      P0069 B

      Tech Tips

      If codes other than P0069 are output, perform troubleshooting for those DTCs first.


    B

    REPLACE ECM

    A

    GO TO DTC CHART