P1326
252 owner reports and 569 manufacturer filings across 55 model years from Hyundai, Kia.
Where P1326 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2016 Hyundai Sonata | Engine | 33 | 25 | |
| 2017 Hyundai Sonata | Engine | 32 | 13 | |
| 2017 Hyundai Santa Fe | Engine | 20 | 17 | |
| 2018 Hyundai Sonata | Engine | 32 | 4 | |
| 2016 Kia Optima | Engine | 20 | 16 | |
| 2019 Hyundai Tucson | Engine | 23 | 12 | |
| 2018 Hyundai Tucson | Engine | 28 | 5 | |
| 2017 Kia Optima | Engine | 19 | 14 | |
| 2019 Hyundai Sonata | Engine | 28 | 3 | |
| 2018 Hyundai Santa Fe | Engine | 20 | 7 | |
| 2016 Hyundai Santa Fe | Engine | 20 | 6 | |
| 2018 Kia Optima | Engine | 19 | 7 | |
| 2017 Kia Sorento | Engine | 18 | 8 | |
| 2017 Hyundai Tucson | Engine | 14 | 10 | |
| 2018 Kia Sportage | Engine | 18 | 6 | |
| 2018 Kia Sorento | Engine | 18 | 5 | |
| 2016 Hyundai Tucson | Engine | 14 | 8 | |
| 2020 Kia Optima | Engine | 3 | 19 | |
| 2016 Kia Sorento | Engine | 18 | 4 | |
| 2017 Kia Sportage | Engine | 18 | 4 | |
| 2016 Kia Sportage | Engine | 18 | 1 | |
| 2019 Hyundai Santa Fe | Engine | 16 | 1 | |
| 2019 Hyundai Veloster | Engine | 17 | — | |
| 2016 Kia Soul | Engine | 5 | 11 | |
| 2016 Hyundai Elantra | Engine | 14 | 1 |
Showing the 25 model years where P1326 appears most; it is on file for 55 in total.
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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P1326 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P1326 on that maker’s vehicles.
What it gets filed under
When owners report it
miles, typically
Half of the 40 owner reports naming P1326 that carry an odometer reading fall between 64,000 and 117,000 miles. A code that shows up at 30,000 miles is a different proposition from one that shows up at 130,000, and that difference is the single most useful thing in this record.
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 request investigation into why no warning appeared, whether KSDS operated correctly, whether diagnostic code P1326 was recorded, and the actual engine failure mechanism
am writing regarding 43099808 Number with Hyundai My 2019 Sonata hybird se in limp mode with an active flashing P1326 knock sensor code
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
P0420 P0441 P0014 P1326 C1260 C1688 C2130 These are the codes that's affecting my car
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
569 manufacturer filings name P1326. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P1326.
- 24-EM-010H Service bulletin2024-12-19 · Engine
- Certain Elantra N (CN7 N), Kona N (OS N), and Veloster N (JS N) vehicles may have DTC P1326 set due to water intrusion in the knock sensor connector during heavy rain or car wash conditions. There is no abnormal engine noise present, and the vehicle may enter “limp home” mode.
- PI2108YZ_TSB_R1 Service bulletin2024-11-08 · Engine
- TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2108Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to the Technical Service Bulletin previously published in (P
- PI2107YZ_TSB_R1 Service bulletin2024-11-08 · Engine
- TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2107Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to the Technical Service Bulletin previously published (PI21
- PI2106YZ_TSB_R1 Service bulletin2024-11-08 · Engine
- TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2106Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to the Technical Service Bulletin previously published (PI21
- PI2105YZ_TSB_R1 Service bulletin2024-11-07 · Engine
- TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2105Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to the Technical Service Bulletin previously published (PI21
- PI2104YZ_TSB_R1 Service bulletin2024-11-07 · Engine
- TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to the Technical Service Bulletin previously published in (P
What P1326 means
Source: SAE J2012 / OBD-IIP1326 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 P1326
Source: NHTSA files and the OBD-II standardWhy does this page not define P1326?
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 P1326 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.