DTC    P2228    Barometric Pressure Circuit Low Input

DTC    P2229    Barometric Pressure Circuit High Input

for Preparation Click here


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
  1. Atmosphere Pressure
  2. MAP

HINT:
  1. When the ignition switch is ON, the intake air pipe pressure is approximately equal to atmospheric pressure.
  2. Standard atmospheric pressure is 101 kPa. For every 100 m increase in altitude, pressure drops by 1 kPa. Varies by weather.


INSPECTION PROCEDURE

NOTICE:
When replacing the ECM, the ECM needs Registration and Initialization (Click here).

HINT:
  1. 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.
  2. 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.

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.

  1. Clear the DTCs (Click here).

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

  1. Turn the ignition switch to ON.

  1. Confirm that the DTC is not output again.


NEXT

END