ECD SYSTEM(for DPF), Diagnostic DTC:P2226,P2228 and 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. Using the atmospheric pressure, the ECM corrects the injection volume, timing and duration, and adjusts the common rail internal fuel pressure in order to optimize engine combustion.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2226

Barometric Pressure Circuit

Atmospheric pressure sensor voltage is 1.4 V or less, or 4.0 V or higher for 0.5 seconds.

(1 trip detection logic)

ECM

Comes on

DTC stored

P2228

Barometric Pressure Circuit Low Input

Atmospheric pressure sensor voltage is 1.4 V or less for 0.5 seconds.

(1 trip detection logic)

ECM

Comes on

DTC stored

P2229

Barometric Pressure Circuit High Input

Atmospheric pressure sensor voltage is 4.0 V or higher for 0.5 seconds.

(1 trip detection logic)

ECM

Comes on

DTC stored
Table 1. Related Data List

DTC No.

Data List

P2226

  • Atmosphere Pressure

  • MAP

P2228

P2229
Tip:

  • When the ignition switch is ON, the intake manifold pressure "MAP" is approximately equal to atmospheric pressure.

  • Under standard atmospheric pressure conditions, the output of the atmospheric pressure sensor is 101 kPa. For every 100 m increase in altitude, pressure drops by 1 kPa. Varies by weather (high atmospheric pressure, low atmospheric pressure).

  • If DTC P2226, P2228 and/or P2229 is stored, the following symptoms may appear:

    • Misfire

    • Combustion noise

    • Black smoke

    • White smoke

CONFIRMATION DRIVING PATTERN

DTC No.

DTC Detection Drive Pattern

P2226

Ignition switch ON for 1 second

P2228

P2229

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  2. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Clear the DTCs.

      Powertrain > Engine > Clear DTCs

    4. Turn the ignition switch to ON and wait for 1 second or more.

    5. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

      Powertrain > Engine > Trouble Codes

    6. Confirm that the DTC is not output again.

    Result

    Proceed to

    NEXT
    NEXT

    END