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 atmospheric pressure sensor, built into the ECM, detects the atmospheric pressure. According to the value of the atmospheric pressure, the ECM corrects the injection timing, the injection volume and the amount of common rail internal fuel pressure for an optimum combustion.

DTC No. DTC Detection Condition Trouble Area
P2226 Open or short in atmospheric pressure sensor circuit for more than 0.5 seconds (ECM internal malfunction) ECM
P2228 Short in atmospheric pressure sensor circuit for more than 0.5 seconds (ECM internal malfunction) ECM
P2229 Open in atmospheric pressure sensor circuit for more than 0.5 seconds (ECM internal malfunction) ECM

Tech Tips

"A" in the above table indicates that the MIL flashes 10 times.

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK OTHER DTC OUTPUT


    1. Replace the normal DLC3 cable (12 V specification) for the intelligent tester with the 24 V DLC3 cable.

      Note

      Be sure to use the 24 V DLC3 cable when connecting the intelligent tester to the DLC3. Using the normal DLC3 cable (12 V specification) will cause damage to the tester.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to the ON position.

    4. Turn the tester on.

    5. Enter the following menu items: Powertrain / Engine and ECT / DTC.

    6. Read the DTCs.

      Result
      Display (DTC output) Proceed to
      P2226, P2228 or P2229 and other DTCs are output A
      P2226, P2228 or P2229 is output B

    B

    REPLACE ECM

    A

    GO TO DTC CHART