ECD 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 built-in atmospheric pressure sensor in the ECM is used for the common rail system. According to changes in the atmospheric pressure, the ECM corrects the fuel injection volume and timing, and adjusts the common rail internal fuel pressure in order to optimize engine combustion.

P2228, P2229
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch is ON

Atmospheric pressure sensor malfunction.

(1 trip detection logic)

 ECM
Related Data List
DTC No. Data List

P2228

P2229

  • Atmosphere Pressure

  • MAP

Tech Tips


  • When the ignition switch is ON, the intake air pipe pressure is approximately equal to atmospheric pressure.

  • Standard atmospheric pressure is 101 kPa. For every 100 m increase in altitude, pressure drops by 1 kPa. Varies by weather.

INSPECTION PROCEDURE

Note

When replacing the ECM, the ECM needs Registration and Initialization Click here.

Tech Tips


  • When the DTC P2228 or P2229 is stored, check the difference between MAP and Atmosphere Pressure values by entering the following menus using the intelligent tester: Powertrain / Engine and ECT / Data List / MAP and Atmosphere Pressure.

    The difference should be within +/-7 kPa in the normal condition.

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.

PROCEDURE


  1. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  2. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the ignition switch off and wait for 30 seconds or more.

    4. Turn the ignition switch to ON.

    5. Confirm that the DTC is not output again.


    NEXT

    END