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Federal filingsHome›Trouble codes› C1A16
Diagnostic trouble code

C1A16

6 owner reports and 169 manufacturer filings across 141 model years from Infiniti, Nissan.

Chassis Manufacturer-specific 169 manufacturer filings 6 owner reports

Where C1A16 shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reportsParts
2016 Nissan MuranoElectrical System6—Battery →
2018 Nissan RogueForward Collision Avoidance32
2017 Infiniti Q50Electrical System21Battery →
2016 Nissan AltimaForward Collision Avoidance3—
2016 Nissan MaximaElectrical System3—Battery →
2017 Nissan RogueForward Collision Avoidance3—
2016 Nissan RogueElectrical System3—Battery →
2016 Nissan SentraElectrical System3—Battery →
2018 Infiniti Q50Forward Collision Avoidance2—
2016 Infiniti Q50Electrical System2—Battery →
2018 Infiniti Q70Forward Collision Avoidance2—
2017 Infiniti Q70Forward Collision Avoidance2—
2016 Infiniti Q70Electrical System2—Battery →
2019 Infiniti QX60Forward Collision Avoidance2—
2018 Infiniti QX60Forward Collision Avoidance2—
2017 Infiniti QX60Forward Collision Avoidance2—
2016 Infiniti QX60Electrical System2—Battery →
2019 Nissan AltimaElectrical System11Battery →
2018 Nissan AltimaForward Collision Avoidance11
2017 Nissan MuranoElectrical System2—Battery →
2019 Nissan SentraElectrical System11Battery →
2024 Infiniti Q50Electrical System1—Battery →
2023 Infiniti Q50Forward Collision Avoidance1—
2022 Infiniti Q50Electrical System1—Battery →
2021 Infiniti Q50Forward Collision Avoidance1—

Showing the 25 model years where C1A16 appears most; it is on file for 141 in total.

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.

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C1A16 by make

The same record, one make at a time: the model years, bulletins and owner reports that name C1A16 on that maker’s vehicles.

Nissan 96Infiniti 45

What it gets filed under

Electrical System 87 Forward Collision Avoidance 79 Service Brakes 7 Unspecified 1

What owners said

Source: NHTSA complaint database

Owners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.

Took it to Nissan, they diagnose 2 codes that comes up in the TSB, dtc C1A16 (radar blocked) and dtc C1A12 (laser beam off-center) stating that it is a safety issue but I still had to pay diagnosis and the part and labor to fix it
2019 Nissan Sentra at 38,000 miles Apr 13, 2021 NHTSA owner report
On august 20, 2019 vehicle was again brought in and documented that the system had failed showing 'radar stain code C1A16'
2018 Nissan Rogue at 14,000 miles Sep 5, 2019 NHTSA owner report

169 manufacturer filings name C1A16. Start with what the maker wrote down.

A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.

Read the filingsSearch every bulletin →
Photo: Compagnons / Unsplash

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names C1A16.

What C1A16 means

Source: SAE J2012 / OBD-II

C1A16 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.

From here
Get a model's new bulletins by email See what owners reported Look up a bulletin by its number Watch a VIN for new recalls

Common questions about C1A16

Source: NHTSA files and the OBD-II standard

Why does this page not define C1A16?

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 C1A16 stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. 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.

Where to go next

pages beside this code
Filed alongside P0456 Another code that appears in the same filings and owner reports as C1A16.Filed alongside P0442 Another code that appears in the same filings and owner reports as C1A16.Vehicle 2016 Nissan Murano The model year C1A16 is filed against most often.The data Trouble codes by API GET /v1/dtc joins every code to bulletins and owner reports — free tier, no card.