Question about 2002 Volvo C70

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Installing a knock sensor

Check engine light

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It will be on the front side of the engine block, very difficult to get to with out pulling the Intake Manifold, Also while you are at it replace the Flame Trap System.

Posted on May 23, 2015

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Posted on Jan 02, 2017

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What causes a p 0327 diagnostic code on a 95 contour


P0327 - Knock Sensor 1 Circuit Low Input Bank 1 or Single Sensor
First check the knock sensor connector. If the connector is clean and secure, replacing the knock sensor usually takes care of the problem.

- An excessively low voltage from the sensor is sent to Powertrain Control Module (ECM) or Engine Control Module (ECM)

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Powertrain Control Module (PCM) or Engine Control Module (ECM).

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power

Possible causes
- Knock sensor circuit short to GND.
- Knock sensor circuit short to PWR.
- Knock sensor circuit open.
- Damaged knock sensor.
- Faulty Powertrain Control Module (PCM) or Engine Control Module (ECM).


Test and check it. Hope helps.

May 12, 2011 | 1995 Ford Contour

1 Answer

I have a 2004 pilot, VTS4 and engine light came on. i have a p0325 knock sensor circ. bank A. just replace the sensor?? also i can seem to find any diagrams. any help appreciated!!!


It does sound like the sensor may be bad, but you also need to check the wiring.
This information comes from:

http://www.obd-codes.com/p0325

P0325 OBD-II Trouble Code Technical Description

Knock Sensor Circuit Malfunction
What does that mean?

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. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor 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 on your engine. Knock sensors generally bolt into or thread into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Symptoms

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

A code P0325 most likely means one or more of the following has happened:

Possible Solutions
  • Check the resistance of the knock sensor (compare it to factory specs)
  • Check for broken/frayed wires leading to the sensor
  • Replace the knock sensor

Mar 02, 2011 | Honda Pilot Cars & Trucks

1 Answer

Service soon light stays on.. had it checked at auto zone and came up with po327 knock sensor condition. Is this gona be an expensive car repair?


no, 30 minutes labor--you can do it yourself. part is $30. You have 2 of them. 327 is for bank 1, which is the back bank by the firewall. see picture below (the picture is bank 2, but location is same on other side).

To replace the knock sensor:
  • Disconnect the knock sensor wiring connector.
  • Then, unscrew the sensor.
  • Remove the knock sensor.
  • Reverse the procedures to install the part.
  • fed2730.gif
      A defective knock sensor may cause engine detonation or reduced spark advance and fuel economy. When a knock sensor is removed and replaced, the sensor must be tightened to its specified torque. If the knock sensor is installed tighter than it should be, it may become too sensitive and provide an excessively high voltage signal, resulting in more spark ****** than required. When the knock sensor is installed looser than it should be, the knock sensor signal will be lower than normal, resulting in engine detonation.

    Oct 12, 2010 | 1999 Pontiac Grand Am GT

    1 Answer

    Engine check light keeps coming on and stays on.i had the car diagnosed the mechanic said that the knock sensor is dad and i need to get a new knock sensor so i bought a new knock sensor put it in and it...


    did you have the check engine light reset after replacing it? if not then go to auto zone, and let them know you replaced it and need to reset the trouble light for the check engine light... hope this helps...

    Apr 14, 2010 | 1995 Toyota Corolla

    3 Answers

    Not shifting into overdrive and check engine light


    I'm not a lexus guy , but I'm thinking that you have a vacuum leak somewhere.

    Nov 06, 2009 | 1999 Lexus RX 300

    1 Answer

    Knock sensor


    Check knock sensor wiring and replace the knock sensor.

    To find the knock sensor look at the top of the engine block below the intake manifold. There you should find the knock sensor wherethe throttle cables connect to the throtle body, reaching it from underneath, and bolted to the top of the motor , below comes a picture:

    9acdc20.jpg

    Mar 15, 2009 | 1998 Pontiac Trans

    4 Answers

    Nissan xterra knock sensor


    It's the valley of the engine underneath the intake manifold. It's about an $800 job because the top of the engine has to come off. However, unless you have a supercharged xterra it shouldn't effect performance. Also, the knock sensor will not trip the check engine light, as it does not indicate a primary problem, so if your light is on you should have another code that should be fixed first.

    Nov 05, 2008 | 2002 Nissan Xterra

    2 Answers

    Knock sensor


    The knock sensor threads into the side of the cylinder block.
    1. Disconnect electrical connector from knock sensor.
    2. Use a crow foot socket to remove the knock sensors.
    INSTALLATION
    The knock sensor threads into the side of the cylinder block in front of the starter.

    1. Install knock sensor. Tighten knock sensor to 10 Nm (7 ft. lbs.) torque. Over or under tightening effects knock sensor performance, possibly causing improper spark control.
    2. Attach electrical connector to knock sensor

    May 15, 2008 | 2005 Chrysler Sebring Conv

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