P1A90
8 owner reports and 0 manufacturer filings across 5 model years from Hyundai, Kia.
Where P1A90 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2022 Hyundai Ioniq 5 | Electrical System | — | 3 | Battery → |
| 2024 Hyundai Ioniq 5 | Electrical System | — | 2 | Battery → |
| 2023 Hyundai Ioniq 5 | Electrical System | — | 1 | Battery → |
| 2023 Kia EV6 | Electrical System | — | 1 | Battery → |
| 2022 Kia EV6 | Electrical System | — | 1 | 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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What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ 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.
I checked the error codes with an android app and got error codes P1A90 and PPOC17
P1A90 [0x1A90] ios_Archive Status: Permanent ---------------------------- P0AA6(00) [0x0AA600] Hybrid battery voltage system - isolation fault Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since…
A code names the test that failed. Not the part.
No manufacturer filing in NHTSA’s file names P1A90. Owners’ reports are the record so far — and the model years they came from are above.
What P1A90 means
Source: SAE J2012 / OBD-IIP1A90 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.
Common questions about P1A90
Source: NHTSA files and the OBD-II standardWhy does this page not define P1A90?
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 P1A90 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.