What are the possible causes of DTC P1326?
NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.
- Faulty knock sensor
- Knock sensor wiring harness is open or short-circuited
- Poor electrical connection in the knock sensor circuit
- Engine mechanical problem
- Reprogram the Engine Control Module (ECM)
How to repair DTC P1326?
Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
What are the possible symptoms of code P1326?
- Check Engine Light on (or Service Engine Soon warning light)
What does code P1326 mean?
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 serious engine damage occurs, including engine failure. If vibrations caused by bearing wear begin to occur, the Malfunction Indicator Lamp (MIL) will flash continuously and the vehicle will be placed in Limp Home Mode. This will further reduce engine damage and ensure vehicle occupants are not exposed to the risk of more severe engine failure. At this point, the specific KSDS diagnostic trouble code (DTC) P1326 will be recorded in the ECU. The vehicle may continue to operate for a limited time in Limp Home Mode, but it will accelerate slowly and have a reduced maximum speed. Additionally, engine speed will be limited to approximately 1,800-2,000 RPM.