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P0325 Knock Sensor 1 Circuit

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Hi all,

My 996 GT2 doesn't pull right under hard acceleration, happens at least in 2, 3 og 4 gear, maybe even more. CEL comes on, flashes for a few seconds, and goes away. Read out the fault codes today:

P0325 Knock Sensor 1 Circuit

So I guess the sensor, or the plugs are lose - but can I access the knock sensor when the engine is in the car? If yes, how/where? (worth checking the wires before I leave to car to a shop)



Edited by mariusl
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Try this...

1. Reset the fault codes.

2. Switch on the ignition. Wait one minute. Do not press the accelerator.

3. Switch off the ignition for at least 10 seconds.

4. Read out the fault memory.

Will try this, Loren - thanks.

What am I looking for?

Edited by mariusl
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DId as suggested today, took the car for a test drive, and the same thing happened - but a different error code this time:

P0301 - Misfire Cylinder 1

Workshop manuals says:

Possible fault cause

♦ Fault in ignition system

♦ Fault in injection system

♦ Flat-base tappets (valve lift fault)

♦ Mixture too rich

♦ Mixture too lean

Can it be just the MAF is dirty / time for replace? (read a few other threads for MAF, but no one mentions P030x, but Mixture too rich/lean make me believe it can be the MAF?)

Or is it more likly coil / plugs? car has done about 45.000 miles

Edited by mariusl
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