®




Results 1 to 5 of 5

Thread: 1997 Subaru Troublecode P0325 (Knock Sensor 1)-What to Do

  1. #1
    kaplan3jiim
    Guest kaplan3jiim's Avatar

    Default 1997 Subaru Troublecode P0325 (Knock Sensor 1)-What to Do

    The check engine light came on today in my 97 Subuaru (2.2L) engine
    and according to Autozone printout...

    "Troublecode OBDII (Alpha) P Code

    The PCM has determined that a malfunction exists in the electrical
    circuit for knock sensor 1. (Bank 1 or Single Sensor)( Bank 1
    identifies the location of cylinder #1, While bank 2 identifies the
    cylinders on the opposite bank)."

    The mechanic who moonlights in Auto Zone's parts dept says there may
    be a wire shorting out and that the sensors(s) can be found somewhere
    on the block. He described it as round and a couple inches in
    diameter (generic knock sensor, since he said he didn't much work on
    Soobies)

    Where might I find this sensor, what does it look like and on which
    side, facing the engine from the front is cylinder #1?

    If no loose wire externally, should I replace the part, or ignore the
    message (I hear no knocking)? (OF course then if something else
    triggers the light I won't know about it)

    I'm really not a mechanic of any great inclination, but would
    appreciate at least the help to try and see if what the mechanic said
    might be the problem is the problem.

    Also...can this code ever be triggered by something else?

    TUVMIA

    Jim

  2. #2
    Carl 1 Lucky Texan
    Guest Carl 1 Lucky Texan's Avatar

    Default 1997 Subaru Troublecode P0325 (Knock Sensor 1)-What to Do

    kaplan3jiim@............ wrote:

    > The check engine light came on today in my 97 Subuaru (2.2L) engine
    > and according to Autozone printout...
    >
    > "Troublecode OBDII (Alpha) P Code
    >
    > The PCM has determined that a malfunction exists in the electrical
    > circuit for knock sensor 1. (Bank 1 or Single Sensor)( Bank 1
    > identifies the location of cylinder #1, While bank 2 identifies the
    > cylinders on the opposite bank)."
    >
    > The mechanic who moonlights in Auto Zone's parts dept says there may
    > be a wire shorting out and that the sensors(s) can be found somewhere
    > on the block. He described it as round and a couple inches in
    > diameter (generic knock sensor, since he said he didn't much work on
    > Soobies)
    >
    > Where might I find this sensor, what does it look like and on which
    > side, facing the engine from the front is cylinder #1?
    >
    > If no loose wire externally, should I replace the part, or ignore the
    > message (I hear no knocking)? (OF course then if something else
    > triggers the light I won't know about it)
    >
    > I'm really not a mechanic of any great inclination, but would
    > appreciate at least the help to try and see if what the mechanic said
    > might be the problem is the problem.
    >
    > Also...can this code ever be triggered by something else?
    >
    > TUVMIA
    >
    > Jim


    Clear the code and see if it comes back immediately. If it doesn't, you
    may have had some bad gas or some carbon buildup in the cylinders or
    something. It is not uncommon to need to replace the knock sensor
    however. It MAY be worthwhile to use a bottle of Techron in the tank or
    do a Sea Foam treatment.

    hard to say unless it is a 'hard' recurring failure.

    (if AZ did not clear the code, try disconnecting the neg. batt. cable,
    step on the brake pedal, wait 20-30 minutes, reconn. batt. )

    a GOOD independent mechanic can easily change a soobs knock sensor if it
    appears to be bad.

    Carl

  3. #3
    S
    Guest S's Avatar

    Default 1997 Subaru Troublecode P0325 (Knock Sensor 1)-What to Do

    Hi Jim!

    On Wed, 02 Aug 2006 19:39:58 -0500, kaplan3jiim@............ wrote:


    >Where might I find this sensor, what does it look like and on which
    >side, facing the engine from the front is cylinder #1?


    Fairly common to have one fail. Easy to replace, but the part is kinda
    pricy.
    It's round, black, about 1 1/4 inch in diameter X 1 inch tall,
    retained by one 8mm (? . . . 12mm head) bolt thru the center. Find
    it on top of the block, toward the back, just to the left (drivers
    side) and below the throttle body. '97s still had a wiring pigtail, I
    think; newer models have a connector right on the sensor. You'll
    probably have to push/pull/otherwise move assorted hoses and cables to
    get to it.
    To replace, find where the pigtail connects into the vehicle harness
    and unplug the old one (this can be the hardest part; try using a
    small screwdriver or ice pick to release the lock). Use a 12mm socket
    with appropriate extension to remove the bolt and lift everything out.
    Put the bolt thru the new sensor and carefully thread it back into the
    tapped hole. Tighten securely; 15-20ftlb I'd guess, re-route the
    wires, and plug it in.

    ByeBye! S.
    Steve Jernigan KG0MB
    Laboratory Manager
    Microelectronics Research
    University of Colorado
    (719) 262-3101

  4. #4
    kaplan3jiim
    Guest kaplan3jiim's Avatar

    Default 1997 Subaru Troublecode P0325 (Knock Sensor 1)-What to Do

    >
    >
    >>Where might I find this sensor, what does it look like and on which
    >>side, facing the engine from the front is cylinder #1?

    >
    >Fairly common to have one fail. Easy to replace, but the part is kinda
    >pricy.
    >It's round, black, about 1 1/4 inch in diameter X 1 inch tall,
    >retained by one 8mm (? . . . 12mm head) bolt thru the center. Find
    >it on top of the block, toward the back, just to the left (drivers
    >side) and below the throttle body. '97s still had a wiring pigtail, I
    >think; newer models have a connector right on the sensor. You'll
    >probably have to push/pull/otherwise move assorted hoses and cables to
    >get to it.
    >To replace, find where the pigtail connects into the vehicle harness
    >and unplug the old one (this can be the hardest part; try using a
    >small screwdriver or ice pick to release the lock). Use a 12mm socket
    >with appropriate extension to remove the bolt and lift everything out.
    >Put the bolt thru the new sensor and carefully thread it back into the
    >tapped hole. Tighten securely; 15-20ftlb I'd guess, re-route the
    >wires, and plug it in.
    >
    >ByeBye! S.
    >Steve Jernigan KG0MB
    >Laboratory Manager
    >Microelectronics Research
    >University of Colorado
    >(719) 262-3101[/color]

    Thanks for the detail. Interestingly enougt, the code was cleared and
    did not recur until, as iit was triggered last time I was in stop and
    go expressway traffic.

    Jim

  5. #5
    kaplan3jiim
    Guest kaplan3jiim's Avatar

    Default 1997 Subaru Troublecode P0325 (Knock Sensor 1)-What to Do

    >>
    >>
    >>>Where might I find this sensor, what does it look like and on which
    >>>side, facing the engine from the front is cylinder #1?

    >>
    >>Fairly common to have one fail. Easy to replace, but the part is kinda
    >>pricy.
    >>It's round, black, about 1 1/4 inch in diameter X 1 inch tall,
    >>retained by one 8mm (? . . . 12mm head) bolt thru the center. Find
    >>it on top of the block, toward the back, just to the left (drivers
    >>side) and below the throttle body. '97s still had a wiring pigtail, I
    >>think; newer models have a connector right on the sensor. You'll
    >>probably have to push/pull/otherwise move assorted hoses and cables to
    >>get to it.
    >>To replace, find where the pigtail connects into the vehicle harness
    >>and unplug the old one (this can be the hardest part; try using a
    >>small screwdriver or ice pick to release the lock). Use a 12mm socket
    >>with appropriate extension to remove the bolt and lift everything out.
    >>Put the bolt thru the new sensor and carefully thread it back into the
    >>tapped hole. Tighten securely; 15-20ftlb I'd guess, re-route the
    >>wires, and plug it in.
    >>
    >>ByeBye! S.
    >>Steve Jernigan KG0MB
    >>Laboratory Manager
    >>Microelectronics Research
    >>University of Colorado
    >>(719) 262-3101[/color]
    >
    >Thanks for the detail. Interestingly enougt, the code was cleared and
    >did not recur until, as iit was triggered last time I was in stop and
    >go expressway traffic.
    >
    >Jim[/color]
    And this time it cleared itself overnight.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •