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P0326 is a diagnostic trouble code (DTC) for "Knock Sensor Range/Performance (Bank 1 or Single Sensor)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $69.99. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
The P0326 code means that the Engine Control Module (ECM) has detected a reference voltage from the knock sensor that has fallen outside the threshold of acceptance set by the manufacturer.
The knock sensor’s job is to inform the ECM of any abnormal engine noises that may be occurring, such as spark knock.
This code is sometimes accompanied by other codes, and it is important to address these other issues first. If no other engine issues exist but a P0326 code is still present, some potential causes of the P0326 code may include:
If this code is accompanied by any other trouble codes, the mechanic would resolve those issues first. If no other issues exist, the mechanic would visually inspect the knock sensor to ensure that it is plugged in, the wiring is not damaged, and that is is functioning properly.
To ensure the functionality of the knock sensor, the mechanic may test it with a digital multimeter using the manufacturer’s recommended procedure. If any issues are found during this test, the faulty parts would be replaced at the customer’s request.
If no issues were found, the ECM would be tested next and replaced if necessary.
This is a code where it is easy to misdiagnose the problem due to the fact that a particular part is mentioned in the trouble code itself. If this code is stored in your vehicle, do not just replace the knock sensor. Ensure that the sensor is malfunctioning before replacing it.
If other codes are associated with this code, it can be more serious than if this code were set by itself. The other codes that may cause this code to pop up can cause very serious drivability issues and may cause the engine not to run at all. If the P0326 code is stored by itself, it is likely that the driver can drive on it for a short time before having the issue resolved.
Spark knock can be very loud and is usually immediately noticeable to the driver. If the engine in your vehicle starts to sound abnormal while it is running, be sure to have the issue resolved as soon as possible to prevent any further engine damage.
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