Subaru Crosstrek Service Manual: Dtc b2790 id code box circuit

DTC detecting condition:

An error has occurred inside the ID code box.

Trouble symptom:

Engine will not start.

CAUTION:

For replacement procedure of ID code box, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

1.CHECK DTC.

1) Turn the ignition switch to OFF.

2) Using the Subaru Select Monitor, clear the memory of «Keyless Access with Push Button Start». Clear Memory Mode">

3) Turn the ignition switch to OFF > ON.

4) Register the ID code box. Refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

5) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is DTC B2790 displayed?

Replace the ID code box. ID Code Box">

ID code box registration was not performed properly.

Dtc b2789 id code box communication

Dtc b278a push engine switch power supply circuit

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