SFI SYSTEM, Diagnostic DTC:P2228, P2229

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

DESCRIPTION

To detect atmospheric pressure, the atmospheric pressure sensor is built into the ECM. According to changes in the atmospheric pressure, the ECM corrects the fuel injection volume, timing, and duration in order to optimize engine combustion.

DTC No. DTC Detection Condition Trouble Area
P2228

Atmospheric pressure sensor malfunction

(3 trip detection logic)

 ECM
P2229

Atmospheric pressure sensor malfunction

(3 trip detection logic)

 ECM

Tech Tips

DTC P2228 and P2229 are detected when the engine idles for 15 seconds.

CAUTION / NOTICE / HINT

Note

Perform electric throttle learning after replacing the ECM Click here.

PROCEDURE


  1. CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO P2228 AND P2229)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Clear DTCs Click here.

    5. Turn the ignition switch off and wait for 30 seconds.

    6. Turn the ignition switch to ON.

    7. Turn the tester on.

    8. Start the engine.

    9. Allow the engine to idle for 15 seconds or more.

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

    11. Read pending DTCs.

      Result
      Result Proceed to
      DTC P2228 or P2229 is output A
      DTC P2228 or P2229 and other DTCs are output B

      Tech Tips

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


    A

    REPLACE ECM Click here

    B

    GO TO DTC CHART Click here