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Nissan Sentra B18 (2020-2025) Service Manual: B1305 Control Unit Internal Error

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B1305–04

Control unit internal error

(AV control unit internal fault)

[—]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

–

Threshold

Internal fault

Diagnosis delay time

30 seconds or more

POSSIBLE CAUSE

AV control unit internal fault

FAIL-SAFE

AV control unit internal error

Confirmation Procedure

Confirmation Procedure

  1. PERFORM DTC CONFIRMATION PROCEDURE

    1. CONSULT

      1. Ignition switch ON.

      2. Ignition switch OFF and wait at least 30 seconds.

      3. Ignition switch ON and wait at least 30 seconds or more.

      4. Select “Self Diagnostic Result” mode of “MULTI AV”.

      5. Check DTC.

    Is DTC B1305–04 detected?

    YES>>

    Refer to DTC Diagnosis Procedure.

    NO>>

    To check malfunction symptom before repair: Refer to Intermittent Incident.

    NO>>

    Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. PERFORM DTC CONFIRMATION PROCEDURE

    1. CONSULT

      1. Ignition switch ON.

      2. Ignition switch OFF and wait at least 30 seconds.

      3. Ignition switch ON and wait at least 30 seconds or more.

      4. Select “Self Diagnostic Result” mode of “MULTI AV”.

      5. Check DTC.

    Is DTC B1305–04 detected?

    YES>>

    Replace AV control unit. Refer to Removal and Installation.

    NO>>

    Inspection End.

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