P161D on Nissan vehicles

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Bulletins and campaigns Nissan filed with NHTSA whose summary names P161D. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• NTB19-008 Service bulletin
  2019-01-29 · Equipment
• NISSAN; DIAGNOSIS INFORMATION FOR DTC P161D SERVICE INFORMATION When key registration is unsuccessful after BCM replacement, P161D (Immobilizer) will set when the ignition is turned on. Possible causes - Improper key registration - Defective BCM (Vehicles with Intelligent Key only) - EPS control unit (Vehicles with mechanical key only) - Intelligent Key unit (Vehicles with mechanical key
• NTB19-008a Service bulletin
  2019-04-26 · Steering
• NISSAN; DIAGNOSIS INFORMATION FOR DTC P161D This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
• NTB19-008b Service bulletin
  2021-02-09 · Equipment
• NISSAN; DIAGNOSIS INFORMATION FOR DTC P161D This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
• NTB19-008C Service bulletin
  2022-01-14 · Electrical System
• NISSAN; DIAGNOSIS INFORMATION FOR DTC P161D This bulletin is no longer active. Please discard previous versions of NTB19-008.
• NTB20-084 Service bulletin
  2020-11-30 · Equipment
• INTELLIGENT KEY UNIT DTC P161D STORED IN THE ECM SERVICE INFORMATION DTC P161D (IMMOBILIZER) will not cause:  The MIL to turn ON.  The Remote Engine Start to become inoperative.  The “No Key Detected” message to appear.  An impact to any of the vehicle’s functions or performance. If other DTCs are stored with P161D, perform the diagnosis and repair procedures, outlined in the ESM, for
• NTB22-094 Service bulletin
  2022-10-26 · Electrical System
• DTC P161D STORED IN BCM IF YOU CONFIRM DTC P161D (Immobilizer) is stored in the BCM,.  If a DTC other than P161D is present, diagnose and resolve first before applying this bulletin. AND The current ECU PART NUMBER in the BCM is either 284B3-3613R or 284B3-6580R. ACTION Reprogram the BCM with the SERVICE PROCEDURE in this bulletin.

A stored code names the test that failed, never the part that caused it. The record above is what Nissan and its owners have filed about it; the code’s page across every make has the whole file.