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Diagnostic trouble code · Ford

P0046 on Ford vehicles

P0046 is named on 6 Ford model years (2021–2022): 18 manufacturer filings and 0 owner reports in NHTSA’s files, across F-250 Super Duty, F-350 Super Duty, F-450 Super Duty.

Powertrain 6 model years 18 manufacturer filings

Which Ford model years name P0046

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2022 Ford F-250 Super DutyEquipment3—
2022 Ford F-350 Super DutyPower Train3—
2022 Ford F-450 Super DutyPower Train3—
2021 Ford F-250 Super DutyEngine3—
2021 Ford F-350 Super DutyEngine3—
2021 Ford F-450 Super DutyEngine3—

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Engine 9 Not specified 6 Power Train 2 Equipment 1
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Ford filings that name P0046

Source: NHTSA manufacturer communications

Bulletins and campaigns Ford filed with NHTSA whose summary names P0046. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P0046 means

Source: SAE J2012 / OBD-II

P0046 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. The record above is what Ford and its owners have filed about it; the code’s page across every make has the whole file.

From here

Common questions

Source: NHTSA files and the OBD-II standard

Is P0046 a known problem on Ford vehicles?

It is a documented one: NHTSA's files hold 18 manufacturer filings and 0 owner reports naming P0046 on 6 Ford model years (2021–2022). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.

Which Ford models does P0046 appear on most?

2022 F-250 Super Duty (3 documents), 2021 F-250 Super Duty (3 documents), 2022 F-350 Super Duty (3 documents).

Does P0046 on a Ford mean it is recalled?

No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.