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Nissan Sentra B18 (2020-2025) Service Manual: P161f Immobilizer

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

P161F

IMMOBILIZER

(Immobilizer)

Diagnosis condition

Ignition switch ON

Signal (terminal)

—

Threshold

When Intelligent Key unit detects an immobilizer malfunction and engine start is prohibited.

Diagnosis delay time

1 second or less

POSSIBLE CAUSE

ECM

FAIL-SAFE

Inhibit engine cranking

Confirmation Procedure

Confirmation Procedure

  1. PERFORM DTC CONFIRMATION PROCEDURE

    1. CONSULT

      1. Ignition switch ON.

      2. Select “Self Diagnostic Result” mode of “ENGINE”.

    Is DTC 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. REPLACE ECM

    1. CONSULT

      Replace ECM. Refer to Removal and Installation.

    >>

    Inspection End.

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