Subaru 22060AA140 Knock Sensor Assembly

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The knock sensor is situated below the intake manifold, upon the top of the engine block, to one side of the centre line of casings and near its rear end. For removal of the knock sensor, first take off the engine cover and disconnect a wire from its negative terminal. As for turbocharged models, remove them also from intercooler connections. For knocking sensor electrical connector disconnection push release tab and separate these two halves. See how it is placed before taking off and make a marking on an engine block where this pigtail is found. Take out this knock sensor retaining bolt then pull out this knock sensor. To fit in a new knock sensor reverse back with previous steps ensuring that tightening torque amount is recommended by manufacturer for particular vehicle model.

Yes, for turbocharged models, the intercooler needs to be removed after disconnecting the negative battery terminal.

First, remove the engine cover and disconnect the cable from the negative battery terminal. On turbocharged models, also remove the intercooler. Then, disconnect the knock sensor electrical connector by depressing the release tab and separating the two halves of the connector. Note the orientation of the sensor before removing it and make a mark on the engine block where the sensor's pigtail is. Finally, remove the knock sensor retaining bolt and then remove the knock sensor.

The final step is to remove the knock sensor mounting bolt and then remove the sensor.