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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> SUBARU Eyesight System (Driver Assist) (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B281C: Incompatible With Eyesight (EPS)

DTC B281C: Incompatible With Eyesight (EPS)

Detected when the EPS control module does not recognize EyeSight.

DTC detecting condition: 

The EPS control module does not recognize EyeSight.

Trouble symptom: 

All functions of EyeSight system do not operate.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to EYESIGHT (DIAGNOSTICS)>General Description>CAUTION .
  1. CHECK DTC  .

    Read the DTC of [EyeSight] using the Subaru Select Monitor. Ref. to EyeSight (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC U**** displayed? (Current malfunction)

    Yes  : Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE . Go to  2.

    No  : Go to  3.

  2. CHECK DTC  .

    Read the DTC of [EyeSight] using the Subaru Select Monitor. Ref. to EYESIGHT (DIAGNOSTICS)>Diagnostic Trouble Code (DTC) .

    Is DTC B281C still a current malfunction?

    Yes  : Go to  3.

    No  : Using the Subaru Select Monitor, perform the clear memory of [EyeSight]. Ref. to COMMON (diag)>CLEAR MEMORY .

  3. CHECK DATA MONITOR  .

    Using the Subaru Select Monitor, check the following items in the [Data Monitor] of [EyeSight]. Ref. to EYESIGHT (DIAGNOSTICS)>DATA MONITOR .

    • EyeSight Specification

    Is the data [Yes]?

    Yes  : Go to  4.

    No  : Go to  5.

  4. CHECK DATA MONITOR  .

    Using the Subaru Select Monitor, check the following items in the [Data Monitor] of [EyeSight]. Ref. to EYESIGHT (DIAGNOSTICS)>DATA MONITOR .

    • EyeSight Recognition Status (EPS)

    Is the data [Detect]?

    Yes  : Replace the stereo camera. Ref. to EyeSight>Stereo Camera>REMOVAL .

    No  : Replace the EPS control module. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>Power Steering Control Module>REMOVAL .

  5. CHECK DATA MONITOR  .

    Using the Subaru Select Monitor, check the following items in the [Data Monitor] of [EyeSight]. Ref. to EYESIGHT (DIAGNOSTICS)>DATA MONITOR .

    • EyeSight Recognition Status (EPS)

    Is the data [Detect]?

    Yes  : Replace the EPS control module and combination meter. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>Power Steering Control Module>REMOVAL . Ref. to INSTRUMENTATION/DRIVER INFO>Combination Meter>REMOVAL .

    No  : Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>Combination Meter>REMOVAL .

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