P0325 Knock Sensor 1 Circuit Malfunction

Description and meaning of DTC p0325

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. A knock sensor tells the engine computerwhen 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 bedamaging to the engine if prolonged. The computer uses this information to tunethe engine so that it doesn't knock. If your knocksensor wasn't operating properly, so that it was always indicating a knock,the engine computer's response may have been to change the ignition timing onyour engine. Knock sensors generally boltinto or thread into the engine block. This P0325 code may showup intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.

p0325 diagnostic trouble code symptoms

You may notice drivability problems including a lack of power and perhaps somehesitation. There may also be other symptoms.

DTC p0325 - possible causes

A code P0325 most likely means one or more of the followinghas happened:The knock sensor is faulty and needs tobe replacedThere is a wiring short/fault in the knocksensor circuit

How to fix OBD-II diagnostic trouble code p0325

Check the resistance of the knock sensor(compare it to factory specs)Check for broken/frayed wires leading to the sensorReplace the knock sensor

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