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Federal filingsHome›Trouble codes› P2440
Diagnostic trouble code

P2440

0 owner reports and 175 manufacturer filings across 15 model years from Lexus, Toyota, Volkswagen.

Powertrain Generic OBD-II code 175 manufacturer filings

Where P2440 shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reportsParts
2019 Volkswagen Golf / GTIEngine36—
2020 Volkswagen Golf / GTIEngine20—
2020 Volkswagen JettaEngine14—
2019 Volkswagen JettaEngine14—
2020 Volkswagen PassatEngine14—
2019 Volkswagen PassatEngine14—
2020 Volkswagen TiguanEngine14—
2019 Volkswagen TiguanEngine14—
2018 Volkswagen AtlasEngine9—
2019 Volkswagen AtlasEngine8—
2018 Volkswagen JettaNot specified4—
2017 Volkswagen JettaNot specified4—
2016 Volkswagen JettaNot specified4—
2016 Lexus GXEngine3—
2016 Toyota TundraEquipment3—

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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P2440 by make

The same record, one make at a time: the model years, bulletins and owner reports that name P2440 on that maker’s vehicles.

Volkswagen 13

What it gets filed under

Engine 76 Not specified 41 Equipment 12 Exterior Lighting 12 Electrical System 4 Tires 2

175 manufacturer filings name P2440. 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 P2440.

What P2440 means

Source: SAE J2012 / OBD-II

P2440 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.

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 P2440

Source: NHTSA files and the OBD-II standard

Can I keep driving with P2440 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 P0496 Another code that appears in the same filings and owner reports as P2440.Filed alongside P0463 Another code that appears in the same filings and owner reports as P2440.Vehicle 2019 Volkswagen Golf / GTI The model year P2440 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.