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Old 07-14-2011, 12:53 PM   #1
maxpower_454
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2001 SL2
Default P0327 Knock Sensor

I am getting this trouble code intermittently. Does this mean my knock sensor is bad or that my engine is knocking???

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Old 07-14-2011, 12:59 PM   #2
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1997 SL2
Default Re: P0327 Knock Sensor

http://www.obd-codes.com/p0327

this'll give you some information on how to tackle this problem. Basically the knock sensor detects if a cylinder is knocking, or otherwise exploding a air/fuel mixture in a way that delivers less power and can cause damage to the engine if prolonged.

TL;DR, possible causes:
The knock sensor is faulty and needs to be replaced
There is a wiring open/short/fault in the knock sensor circuit
The PCM/ECM has failed

TL;DR, possible resolutions:
Verify the resistance of the knock sensor (compare it to factory specs)
Inspect for broken/frayed wires leading to the sensor
Check the wiring and connections leading to/from the knock sensor and PCM/ECM
Verify proper voltage is reaching the knock sensor (e.g. 5 volts)
Verify proper grounding of sensor and circuit
Replace the knock sensor
Replace the PCM/ECM

...
97 SL2
DOB: 3/19/97
Date Obtained: 5/30/07
Status: Alive, 1/2 exhaust

2004 Merc G.Marquis GS
DOB: 2/4/04
Date Obtained: 7/6/12
Status: Alive, no heat

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Old 07-21-2011, 11:03 AM   #3
maxpower_454
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2001 SL2
Default Re: P0327 Knock Sensor

Mine really comes and goes. It has stopped doing it now so I guess I'll just ride it out until I get a consistent CEL.

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