P161D
0 owner reports and 41 manufacturer filings across 12 model years from Ford, Lincoln, Nissan.
Where P161D shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2018 Nissan Rogue | Electrical System | 8 | — |
| 2019 Nissan Rogue | Electrical System | 6 | — |
| 2019 Nissan Altima | Electrical System | 4 | — |
| 2018 Nissan Altima | Electrical System | 4 | — |
| 2019 Nissan Kicks | Electrical System | 4 | — |
| 2018 Nissan Kicks | Electrical System | 4 | — |
| 2025 Ford Expedition | Unknown Or Other | 2 | — |
| 2025 Lincoln Navigator | Unknown Or Other | 2 | — |
| 2019 Nissan Rogue Sport | Electrical System | 2 | — |
| 2021 Nissan Sentra | Equipment | 2 | — |
| 2020 Nissan Sentra | Equipment | 2 | — |
| 2021 Nissan Rogue | Electrical System | 1 | — |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
What it gets filed under
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P161D. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- SSM 543252025-10-24 · Power Train
- Some 2025 Expedition/Navigator vehicles may exhibit diagnostic trouble code (DTC) P161D in the powertrain control module (PCM) when a diagnostic self-test is performed. If there are no observable customer symptoms with the vehicle, no further action is required. Replacement and/or programming of the PCM will not resolve this condition. If there is an observable symptom, follow normal Workshop Manu
- SSM 535602025-04-01 · Unknown Or Other
- Some 2025 Expedition/Navigator vehicles may exhibit diagnostic trouble code (DTC) P161D in the powertrain control module (PCM) when a diagnostic self-test is performed.
- NTB22-0942022-10-26 · Electrical System
- DTC P161D STORED IN BCM IF YOU CONFIRM DTC P161D (Immobilizer) is stored in the BCM,. ï· 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.
- NTB19-008C2022-01-14 · Electrical System
- NISSAN; DIAGNOSIS INFORMATION FOR DTC P161D This bulletin is no longer active. Please discard previous versions of NTB19-008.
- NTB19-008b2021-02-09 · Electrical System
- 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.
- NTB20-0842020-11-30 · Electrical System
- 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 Detectedâ€� 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 p
What P161D means
Source: SAE J2012 / OBD-IIP161D is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P161D
Source: NHTSA files and the OBD-II standardWhy does this page not define P161D?
Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.
Can I keep driving with P161D stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.