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Diagnostic trouble code

P084A

8 owner reports and 0 manufacturer filings across 4 model years from Mitsubishi.

PowertrainGeneric OBD-II code8 owner reports

Where P084A shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2016 Mitsubishi LancerPower Train3
2016 Mitsubishi OutlanderPower Train3
2017 Mitsubishi LancerPower Train1
2017 Mitsubishi OutlanderPower 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

Power Train 8
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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.

It’s throwing a P084A code and it feels like the transmission is about to let loose
2016 Mitsubishi LancerJul 20, 2025NHTSA owner report
The contact drove the vehicle to an independent mechanic where the vehicle was diagnosed and the mechanic retrieved DTC: P084A
2016 Mitsubishi Outlanderat 86,000 milesJul 18, 2022NHTSA owner report

What P084A means

Source: SAE J2012 / OBD-II

P084A 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 P084A

Source: NHTSA files and the OBD-II standard

Can I keep driving with P084A 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.