![]() If the conclusion is that the knock sensor needs to be replaced, then it is often recommended to replace not only the sensor but the knock harness as well.Conduct a visual inspection of the knock sensor wiring, and any connections to the knock sensor to make sure there are no signs of disconnection, tearing, etc.If there are issues with the coolant temperature readings, deal with them ASAP because an overheated engine can definitely cause the engine to knock. If not, the knock sensor may need to be replaced (Step 5). Is the knock sensor sending a signal to the PCM? If so, there may be an issue with the coolant temperature readings.Test drive the vehicle and attempt to replicate the driving conditions that will also give similar if not the same freeze frame data in an attempt to pinpoint the issue.Check to see if there are any other codes along with P0330 and clear your Check Engine Light with FIXD.The computer uses this information to tune the engine so that it doesn’t knock. Live freeze frame data (Found on FIXD App with FIXD Sensor) OBD2 Code P0325 Saab definition: A knock sensor tells the engine computer when one or more of your engine’s cylinders are knocking, that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged.
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