Nissan Sentra B18 (2020-2025) Service Manual: P161e Immobilizer

Nissan Sentra B18 (2020-2025) Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Security Control System :: Intelligent Key System / Dtc/circuit Diagnosis / P161e Immobilizer

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC detecting condition
P161E	IMMOBILIZER (Immobilizer)	Diagnosis condition	Ignition switch ON
		Signal (terminal)	—
		Threshold	When CONSULT is not used during ECM replacement.
		Diagnosis delay time	1 second or less

POSSIBLE CAUSE

Intelligent Key unit
ECM

FAIL-SAFE

Inhibit engine cranking

Confirmation Procedure

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. CONSULT
  1. Ignition switch ON.
  2. Select “Self Diagnostic Result” mode of “ENGINE”.
Is the 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

ECM REGISTRATION
1. CONSULT
  1. Register ECM.
  2. Select “Self Diagnostic Result” mode of “ENGINE”.
Is the DTC detected?
YES >>
GO TO 2.
NO >>
Inspection End.
REPLACE INTELLIGENT KEY UNIT
1. CONSULT
  1. Replace Intelligent Key unit. Refer to Removal and Installation.
  2. Perform initialization of Intelligent Key unit and registration of all Intelligent Keys. Refer to CONSULT immobilizer mode and follow the on-screen instructions.
  3. Select “Self Diagnostic Result” mode of “HANDS FREE MODULE”.
Is the DTC detected?
YES>>
GO TO 3.
NO>>
Inspection End.
REPLACE ECM
1. Replace ECM. Refer to Removal and Installation.
>>
Inspection End.

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