Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P0326: General Description
A nonresonant type of knock sensor is used, and it is mounted on the cylinder block to detect engine knocking. Vibration from engine combustion causes the torus-shaped weight to compress the ceramic element in the nonresonant knock sensor, and converts it into electrical signals. The powertrain control module (PCM) controls the ignition timing according to the electrical signal level. If the signal level from the knock sensor drops for a set time because of a poor connection at the knock sensor, or a bad sensor, the PCM detects a malfunction and stores a DTC.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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