ECD SYSTEM, 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

The ECM uses its built-in atmospheric pressure sensor to detect atmospheric pressure. 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

Tech Tips

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, and other data from the time the malfunction occurred.

Note

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

PROCEDURE


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


    1. Connect the intelligent tester to the DLC3.

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

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

    4. Read DTCs.

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

    B

    GO TO DTC CHART

    A

    REPLACE ECM