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Diagnostic trouble code · Hyundai

P1326 on Hyundai vehicles

P1326 is named on 31 Hyundai model years (2016–2024): 374 manufacturer filings and 130 owner reports in NHTSA’s files, across Sonata, Santa Fe, Tucson, Veloster, Elantra and 1 more.

Powertrain 31 model years 374 manufacturer filings 130 owner reports

Which Hyundai model years name P1326

Source: NHTSA manufacturer communications and complaints

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 382 Electrical System 48 Equipment 39 Power Train 5

When Hyundai owners report it

Reported at 90k

miles, typically

Half of the 17 Hyundai owner reports naming P1326 that carry an odometer reading fall between 62,000 and 116,000 miles.

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What Hyundai owners said

Source: NHTSA complaint database

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

am writing regarding 43099808 Number with Hyundai My 2019 Sonata hybird se in limp mode with an active flashing P1326 knock sensor code
2019 Hyundai Sonata Sep 25, 2026 NHTSA owner report
My car has the 2.0 T GDI theta 2 motor and it went into limp mode and after scanning the codes it’s the p1326 code
2020 Hyundai Santa Fe Sep 8, 2026 NHTSA owner report
P0420 P0441 P0014 P1326 C1260 C1688 C2130 These are the codes that's affecting my car
2016 Hyundai Elantra Jul 25, 2026 NHTSA owner report
I had the car towed to , Hyundai, the only code that is showing up on the diagnostics, is P1326 there is an open class action lawsuit for this exact code
2021 Hyundai Tucson Jul 18, 2026 NHTSA owner report

Hyundai filings that name P1326

Source: NHTSA manufacturer communications

Bulletins and campaigns Hyundai filed with NHTSA whose summary names P1326. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P1326 means

Source: SAE J2012 / OBD-II

P1326 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. The record above is what Hyundai 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 P1326 a known problem on Hyundai vehicles?

It is a documented one: NHTSA's files hold 374 manufacturer filings and 130 owner reports naming P1326 on 31 Hyundai model years (2016–2024). 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 Hyundai models does P1326 appear on most?

2016 Sonata (57 documents), 2017 Sonata (44 documents), 2017 Santa Fe (37 documents).

Does P1326 on a Hyundai 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.