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Diagnostic trouble code · Cadillac

P0331 on Cadillac vehicles

P0331 is named on 6 Cadillac model years (2016–2017): 18 manufacturer filings and 0 owner reports in NHTSA’s files, across ATS, CT6, CTS.

Powertrain 6 model years 18 manufacturer filings

Which Cadillac model years name P0331

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2017 Cadillac ATSElectrical System3—
2017 Cadillac CT6Electrical System3—
2017 Cadillac CTSElectrical System3—
2016 Cadillac ATSElectrical System3—
2016 Cadillac CT6Electrical System3—
2016 Cadillac CTSElectrical System3—

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.

Electrical System 14 Equipment 4
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Cadillac filings that name P0331

Source: NHTSA manufacturer communications

Bulletins and campaigns Cadillac filed with NHTSA whose summary names P0331. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P0331 means

Source: SAE J2012 / OBD-II

P0331 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 Cadillac 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 P0331 a known problem on Cadillac vehicles?

It is a documented one: NHTSA's files hold 18 manufacturer filings and 0 owner reports naming P0331 on 6 Cadillac model years (2016–2017). 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 Cadillac models does P0331 appear on most?

2017 ATS (3 documents), 2016 ATS (3 documents), 2017 CT6 (3 documents).

Does P0331 on a Cadillac 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.