P1326 on Kia
Hyundai and Kia: the knock sensor detection system (KSDS) has picked up vibration that matches abnormal connecting rod bearing wear
Severity: Stop — don't drive this car
Hyundai and Kia set P1326 when the KSDS detects vibration from connecting rod bearing wear that can lead to engine failure, and Hyundai lists no-crank/no-start among the symptoms. The car is put in a reduced-power protection mode only so it can be driven a limited distance to a dealer. Do not keep driving normally.
Need a tow? Find one near youThis page covers only what differs on Kia. For what P1326 means, the ranked causes and the test order, see the P1326 guide.
What's different on Kia
KiaYour car
2014–2019 · 2.4L GDI, 2.0L T-GDI
Supported by vehicle dataOn 2014-2019 Optima, Sorento and Sportage with Theta II engines, Kia gives engine replacement instructions when P1326 sets after the KSDS update.
PI1802YZStatus unverified
Product improvement campaign: engine replacement instructions for DTC P1326
2014–2018optima, sorento, sportage · Theta II 2.4L GDI, Theta II 2.0L T-GDI · issued · rev. R7 · NHTSA 10252085
If a car returns with P1326 (Knock Signal Range/Performance) after the KSDS ECU logic update, follow these engine replacement procedures. Theta II engines.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
PI1805YZStatus unverified
Product improvement: procedures if P1326 returns after KSDS installation
2019optima, sorento, sportage · 2.4L GDI, 2.0L T-GDI · issued · NHTSA 10249001
Same P1326 procedures for 2019 Optima, Sorento and Sportage with the 2.4L GDI or 2.0L T-GDI.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Kia PI1802Y/Z (R7): Engine replacement instructions for DTC P1326 after Knock Sensor Detection System installation
- Kia PI1805Y/Z: Procedures if DTC P1326 returns after KSDS installation, 2019 Optima, Sorento, Sportage
- Hyundai 24-01-068H: Engine monitoring logic update (knock sensor detection software, Service Campaign 966 family)
- Hyundai 22-01-033H: DTC P1326, abnormal noise or no crank/no start, 2.0L T-GDI and 2.4L GDI
- Hyundai Issues Recall and Engine Software Update for Certain Sonata and Santa Fe Sport Vehicles
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
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