The Lemon IndexOn Hyundai and Kia engines, the knock sensor detection system picked up vibration that can point to wearing connecting rod bearings. Full P1326 page
52 owner complaints · the #1 code Hyundai Santa Fe owners name · 33% of Hyundai Santa Fe complaints that name a code (every car: 2.6%)
Middle of 74,000 miles · most between 62,000 and 102,000 (8 owners gave it)
Hyundai Santa Fe owners named P1326 in 52 complaints to the U.S. government (NHTSA), most often on the 2017, 2018 and 2014 model years, at a middle of 74,000 miles. The part they name most is the knock sensor (15 complaints). Complaints are owner reports, not proof of a defect.
Hyundai Santa Fe model years that report P1326
Owner complaints naming P1326, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
Mileage when it happened
74,000 miles is the middle of what 8 owners entered. Half were between 62,000 and 102,000 miles.
The mileage on the complaint form, when the owner gave one.
What owners say caused it or fixed it
The most-named part is the knock sensor, in 15 of the 52 complaints (29%). 11 of those mention it being replaced or repaired, and 5 say the problem came back afterwards. Next: engine (replaced or rebuilt) (13), engine software (a reflash) (5) and spark plugs (4).
- Knock sensor15 complaints11 mention a repair or replacement, 5 of them say the problem came back
- Engine replaced or rebuilt13 complaints13 mention a repair or replacement, 3 of them say the problem came back · what Hyundai Santa Fe owners paid
- Software update (reflash)5 complaints5 mention a repair or replacement, 1 of them says the problem came back
- Spark plugs4 complaints3 mention a repair or replacement, 1 of them says the problem came back · what owners paid
- Catalytic converter4 complaints2 mention a repair or replacement · what owners paid
- 12-volt battery3 complaints2 mention a repair or replacement, 1 of them says the problem came back · what owners paid
- Wiring or a connector3 complaints2 mention a repair or replacement, 1 of them says the problem came back
19 complaints mention a recall and 13 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with P1326
73% of these complaints say the check engine light came on.
- Rattles or knocks56%29 of 52 complaints
- Loses power or goes into limp mode48%25 of 52 complaints
- Flashing check engine light37%19 of 52 complaints
- Stalls or shuts off17%9 of 52 complaints
- Shakes, runs rough or misfires15%8 of 52 complaints
- Uses or leaks oil13%7 of 52 complaints
Share of the complaints naming P1326 whose text also describes each problem. A complaint can describe more than one.
Codes owners report with it
Other codes named in the same Hyundai Santa Fe complaints, and in how many.
Repair costs
Hyundai Santa Fe engine replacement cost
Recalls on these Hyundai Santa Fe years
- Engine · 2012 · issued 2020
The connecting rod bearings inside the engine may wear prematurely, which over time can result in engine damage. NHTSA 20V746000 - Engine · 2013, 2014 · issued 2018
The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned, or improperly torqued during the engine replacement procedure, allowing fuel to leak from the pipe. NHTSA 18V934000 - Engine · 2017 · issued 2017
The crankshaft assemblies may have been produced with surface irregularities in the crankshaft pin, causing engine bearing wear. NHTSA 17V578000 - Engine · 2013, 2014 · issued 2017
Machining errors during the engine manufacturing process may cause premature bearing wear within the engine. NHTSA 17V226000
4 recalls for the same systems (engine) on the Hyundai Santa Fe model years above. A recall for the same system isn't proof it's behind P1326. Recall work is free at any dealer: check a VIN at nhtsa.gov/recalls or with our VIN check.
Keep going
- P1326: meaning, causes and every car that reports it
- Hyundai Santa Fe reliability by year
- 2017 Hyundai Santa Fe problems and recalls
Other codes Hyundai Santa Fe owners report
P1326 on other cars
Kia Optima (92) · Hyundai Sonata (90) · Hyundai Tucson (53) · Kia Soul (38) · Kia Sorento (31) · Kia Sportage (22) · Kia Forte (10)
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What P1326 means
On Hyundai and Kia engines, the knock sensor detection system picked up vibration that can point to wearing connecting rod bearings. The car may go into limp mode. Owners are usually told to see a dealer, because this system was added during the brands' engine bearing campaigns.
Stop and fix now. Don't put it off. This can affect safety, stall the car or cause expensive damage.
- Early connecting rod bearing wear
- Faulty knock sensor or wiring
- Software (KSDS update)
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11775842, 11775057, 11759120, 11749805, 11749634, 11740713, 11731665, 11730505, 11730232, 11719921, 11719417, 11718820 and 40 more.
Quick answers
What does P1326 mean on a Hyundai Santa Fe?
Knock Sensor Detection System (KSDS). On Hyundai and Kia engines, the knock sensor detection system picked up vibration that can point to wearing connecting rod bearings. The car may go into limp mode. Owners are usually told to see a dealer, because this system was added during the brands' engine bearing campaigns.
Which Hyundai Santa Fe years have the most P1326 complaints?
In complaints to NHTSA, owners of the 2017 (16), 2018 (7), 2014 (7) Hyundai Santa Fe named P1326 most (52 complaints in all, 2011–2020). Raw counts, not a failure rate.
What fixes P1326 on a Hyundai Santa Fe?
Owners most often name the knock sensor (15 of 52 complaints), then engine (replaced or rebuilt) and engine software (a reflash). That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
At what mileage does P1326 show up on a Hyundai Santa Fe?
Owners who gave their mileage reported a middle of 74,000 miles; half were between 62,000 and 102,000 (8 owners).
Can I drive my Hyundai Santa Fe with P1326?
Stop and fix now. Don't put it off. This can affect safety, stall the car or cause expensive damage.
Sources: NHTSA owner complaints that name P1326 on the Hyundai Santa Fe, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.