AutoCodesHyundai – P1326 Hyundai

P1326 Hyundai Code - Knock Sensor Detection System

Quick Answer

The Knock Sensor Detection System (KSDS) detects vibrations indicating the onset of excessive connecting rod bearing wear. Common causes include Faulty Knock Sensor, Knock Sensor harness is open or shorted, Knock Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1326 Hyundai indicates Knock Sensor Detection System.
Common causes
Common causes include Faulty Knock Sensor, Knock Sensor harness is open or shorted, Knock Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 124,627
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Apr 13, 2023
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Code P1326 Hyundai Description

The Knock Sensor Detection System (KSDS) detects vibrations indicating the onset of excessive connecting rod bearing wear. It is designed to alert the driver at an early stage of bearing wear before the occurrence of severe engine damage, including engine failure. If vibrations caused by bearing wear start to occur, the Malfunction Indicator Lamp (MIL) will blink continuously, and the vehicle will be placed in Limp Home Mode. This will reduce further damage to the engine and ensure that the vehicle occupants are not exposed to the risk of a more severe engine failure. At that time, Diagnostic Trouble Code (DTC) P1326, specific to the KSDS, will be recorded in the ECU. The vehicle can continue to be operated for a limited time in Limp Home Mode, but it will accelerate slowly and have a reduced maximum speed. Also, engine RPMs will be limited to approximately 1800-2000 RPM.
OBDII Code P1326 Hyundai - Knock Sensor Detection System - AutoCodes.com
P1326 Hyundai Code - Knock Sensor Detection System

What are the Possible Causes of the DTC P1326 Hyundai?

  • Faulty Knock Sensor
  • Knock Sensor harness is open or shorted
  • Knock Sensor circuit poor electrical connection
  • Engine mechanical problem
  • Reprogram Engine Control Module (ECM)

How to Fix the DTC P1326 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1326 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1326 Hyundai code?

Need more information on how to fix the P1326 Hyundai code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1326 Hyundai Code

1. What is OBDII code P1326 for Hyundai?

- OBDII code P1326 for Hyundai refers to the Knock Sensor Detection System.

2. What are the common symptoms of OBDII code P1326 in a Hyundai vehicle?

- Common symptoms of OBDII code P1326 in a Hyundai include engine knocking noises, decreased engine performance, and possible illumination of the Check Engine light.

3. What are the possible causes of OBDII code P1326 in a Hyundai?

- Possible causes of OBDII code P1326 in a Hyundai include a faulty knock sensor, wiring issues in the knock sensor circuit, or engine mechanical problems causing abnormal knocking sounds.

4. How can I diagnose OBDII code P1326 in my Hyundai?

- Diagnosing OBDII code P1326 in a Hyundai typically involves using an OBDII scanner to retrieve the code, checking the knock sensor and its wiring for faults, and inspecting the engine for any signs of abnormal knocking.

5. Can I continue driving my Hyundai with OBDII code P1326 present?

- It is not recommended to continue driving your Hyundai with OBDII code P1326 present, as it can lead to further engine damage and decreased performance if left unresolved.

6. How can I repair OBDII code P1326 in my Hyundai?

- Repairing OBDII code P1326 in a Hyundai may involve replacing the knock sensor, repairing any damaged wiring in the knock sensor circuit, or addressing any underlying engine issues causing abnormal knocking.

7. Will resetting the Check Engine light resolve OBDII code P1326 in my Hyundai?

- Simply resetting the Check Engine light will not resolve OBDII code P1326 in your Hyundai. It is important to diagnose the root cause of the code and address it accordingly.

8. Can a DIY enthusiast fix OBDII code P1326 in a Hyundai?

- While some DIY enthusiasts may be able to address OBDII code P1326 by replacing the knock sensor or checking the wiring, it is recommended to consult a professional mechanic for proper diagnosis and repair.

9. How much does it cost to repair OBDII code P1326 in a Hyundai?

- The cost to repair OBDII code P1326 in a Hyundai can vary depending on the cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more.

10. Is OBDII code P1326 a common issue in Hyundai vehicles?

- OBDII code P1326 related to the Knock Sensor Detection System is not uncommon in Hyundai vehicles, especially in older models or those with high mileage. Regular maintenance and timely repairs can help prevent this issue.

Discuss the causes and fixes for P1326 Hyundai OBDII Code

  • Couldn't find the code in the manual p1326

  • What model and year is your vehicle?

    • My car is a 2014 Hyundai Santa Fe Sport.

      • Thanks for the info. The P1326 code on your 2014 Hyundai Santa Fe Sport means the Knock Sensor Detection System (KSDS) has detected abnormal engine vibrations that may indicate bearing wear or knock—this is not just a standard knock sensor code.

        Hyundai introduced this system as part of a safety campaign related to engine bearing failure on certain 2.0L and 2.4L GDI engines, which includes your model year.

        Here’s what you should do:

        1. Stop driving the vehicle as much as possible until it’s inspected. When this code sets, the car will usually go into "limp mode"—limited power and RPM—to protect the engine.

        2. Contact a Hyundai dealership and ask if your vehicle is covered under the KSDS extended warranty or engine recall/campaign. Many affected engines are covered for extended warranty—even past 100,000 miles.

        3. The dealer will usually:

          • Run a knock sensor test and software update (if not already done)
          • Possibly inspect the engine for bearing damage
          • Determine if your engine qualifies for replacement under the warranty/campaign

        If you're unsure whether the software update was ever done, the dealer can check your VIN and service history. It's worth a call—many owners have had their engines replaced at no cost under this program.

  • cant find glow plug relay o2012 kia sportage

  • We have updated the information about the P1326 code. There is a Recall for this problem. You should contact your local dealer, the repairs may still be under warranty.

    P1326 KIA - Knock Sensor Detection System
    Read more: https://www.autocodes.com/p...

    • And what do we do if we're told that they won't cover it

      • I'm sorry to hear that. If the dealer says it's not covered, you can try contacting Hyundai customer service directly to escalate the issue. Make sure you have your VIN and service history ready. In some cases, even if the warranty has technically expired, they might offer goodwill assistance, especially if it's a known recall or campaign. It's also a good idea to ask the dealer to provide the reason in writing.

  • P1326 code for a 2016 Hyundai sonata need help. My car suddenly threw this today

  • More than likely the problem is the Knock sensor itself. You need to remove the intake manifold to access the sensor.

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  • replace knock sensor and it threw the p1326 code after 150 miles. accerlerated from stop sign car made a rattling noise like low octane fuel then light came on again

  • just had knock sensor replaced drove 2016 hyundai sonata limited 150 miles then light came on again after accelerating from stop sign. car made a pinging noise like low octane but i always use 89 in my car

  • Do you have any other engine performance problems?
    You may have a problem with the engine itself. There is a factory recall for this problem.
    Here is the description of the recall:

    Description: Applicable vehicles with 2.0L Turbo and 2.4L GDI engines may experience the Check Engine warning lamp illuminated with DTC P1326. Follow the procedure to inspect the vehicle and replace the engine or update the engine ECU software based on the inspection results.

    Link to the TSB Recall: https://www.autocodes.com/t...

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