ECD SYSTEM (w/ EGR Cooler), Diagnostic DTC:P2226, P2228, P2229

DTC Code DTC Name
P2226 Barometric Pressure Circuit
P2228 Barometric Pressure Circuit Low Input
P2229 Barometric Pressure Circuit High Input

DESCRIPTION

To detect atmospheric pressure, the built-in atmospheric pressure sensor in the ECM is used for 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 in order to optimize engine combustion.

DTC No. DTC Detection Condition Trouble Area

P2226

P2228

P2229

Atmospheric pressure sensor malfunction

(1 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 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.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2226, P2228 OR P2229)


    1. Connect the intelligent tester to the DLC3.

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

    3. Enter the following menu: Powertrain / Engine / DTC.

    4. Read DTCs.

      Result
      Display (DTC Output) Proceed to
      P2226, P2228 or P2229 A
      P2226, P2228 or P2229 and other DTCs B

      Tech Tips

      If any DTCs other than P2226, P2228 and P2229 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

    REPLACE ECM Click here