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Diagnostic trouble code

U0418

6 owner reports and 39 manufacturer filings across 17 model years from BMW, Chrysler, Fiat, Ford and others.

NetworkGeneric OBD-II code39 manufacturer filings6 owner reports

Where U0418 shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2026 Ford BroncoVehicle Speed Control4
2025 Ford BroncoForward Collision Avoidance4
2022 Ford Bronco SportElectrical System3
2021 Ford Bronco SportForward Collision Avoidance3
2022 Ford EscapeElectrical System3
2021 Ford EscapeElectrical System3
2020 Ford EscapeVehicle Speed Control3
2024 Ford MaverickService Brakes3
2022 Ford MaverickVehicle Speed Control3
2021 Jeep CherokeeElectrical System3
2022 Lincoln CorsairElectrical System3
2021 Lincoln CorsairForward Collision Avoidance3
2020 Lincoln CorsairElectrical System3
2022 BMW X3Service Brakes1
2022 Chrysler PacificaPower Train1
2017 Fiat 500 XElectrical System1
2023 Ford MaverickPower Train1

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

Electrical System 14Vehicle Speed Control 12Forward Collision Avoidance 11Power Train 4Service Brakes 3Suspension 1
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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.

Ford's OASIS system later confirmed active fault codes C052E and U0418 when the vehicle was returned to me unrepaired on XXX6
2024 Ford MaverickJul 7, 2026NHTSA owner report
“Digit-verified cel stored codes p0973 in Tim and in pcm, abs bcm u0418 u0402, u422, alll are stored erased codes, no updates, removed air box to access ground and Tim connector, inspected harness from Tcm to transmission, removed and…
2022 Chrysler PacificaSep 20, 2025NHTSA owner report

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names U0418. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

What U0418 means

Source: SAE J2012 / OBD-II

U0418 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.

Common questions about U0418

Source: NHTSA files and the OBD-II standard

Can I keep driving with U0418 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.