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Federal filingsHome›Trouble codes› P11AD
Diagnostic trouble code

P11AD

0 owner reports and 502 manufacturer filings across 25 model years from Volkswagen.

Powertrain Manufacturer-specific 502 manufacturer filings

Where P11AD shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reportsParts
2019 Volkswagen Golf / GTIEquipment62—
2021 Volkswagen AtlasEquipment38—
2019 Volkswagen JettaEquipment33—
2019 Volkswagen PassatEquipment33—
2019 Volkswagen TiguanEquipment33—
2020 Volkswagen AtlasEquipment29—
2020 Volkswagen Golf / GTIEquipment29—
2019 Volkswagen AtlasEquipment23—
2021 Volkswagen Golf / GTIEquipment22—
2018 Volkswagen JettaEquipment20—
2018 Volkswagen PassatEquipment20—
2020 Volkswagen JettaEquipment19—
2020 Volkswagen PassatEquipment19—
2020 Volkswagen TiguanEquipment18—
2019 Volkswagen BeetleEquipment16—
2018 Volkswagen TiguanEquipment14—
2021 Volkswagen JettaEquipment13—
2017 Volkswagen PassatEquipment13—
2018 Volkswagen BeetleEquipment12—
2018 Volkswagen AtlasEquipment10—
2016 Volkswagen Golf / GTIEquipment8—
2016 Volkswagen PassatEquipment7—
2018 Volkswagen Golf / GTIEquipment5—
2017 Volkswagen Golf / GTIEngine4—
2017 Volkswagen JettaElectrical System2—Battery →

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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P11AD by make

The same record, one make at a time: the model years, bulletins and owner reports that name P11AD on that maker’s vehicles.

Volkswagen 25

What it gets filed under

Equipment 284 Engine 74 Structure 34 Equipment Adaptive/Mobility 12 Electrical System 8 Power Train 5
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502 manufacturer filings name P11AD. 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 →
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Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names P11AD.

What P11AD means

Source: SAE J2012 / OBD-II

P11AD 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 P11AD

Source: NHTSA files and the OBD-II standard

Why does this page not define P11AD?

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 P11AD 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 P11AE Another code that appears in the same filings and owner reports as P11AD.Filed alongside P11AF Another code that appears in the same filings and owner reports as P11AD.Vehicle 2019 Volkswagen Golf / GTI The model year P11AD 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.