CEL P0328 - Bad Knock Sensor or something else?

Discussion in 'Modifications And Maintenance' started by Ryan, Jun 8, 2010.

  1. Ryan
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    Ryan Sled drifting master

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    This is on the wife's car (again.. :ugh: )
    2002 Subaru Impreza 2.5rs
    90,4xx miles
    bone stock
    Oil has 1,8xx miles on it when I looked last night
    Spark plugs haven't been changed in probably 30k miles
    Air filter needs to be changed this weekend

    Situation: First time this happened, Last Wed, the wife said she was going on an onramp, floored it, and it came on. She had very low gas (under 1/4 tank) and she informed me she had been filling up at the local cub gas station :mad: We filled up with some 89 oct BP gas, cleared the code, and it was all good.

    Last night the wife once again was on a on ramp, this time she had a little over 1/2 a tank of the same 89oct BP gas, using 1/2 to 3/4 throttle it threw the code. The car runs fine even after the code is thrown.

    I'm assuming this is a bad sensor, but I'd like to confirm. If I've forgotten any details that might be needed please let me know.

    Thanks,

    Ryan
     
  2. phi11
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    phi11 Well-Known Member

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    Yeah, they go bad, we just replaced our
    in both cars, (02 RS, 98 GT)
    keep in mind, the car is now eight years old.
     
  3. Ryan
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    Ryan Sled drifting master

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    picked up a new one last night, let's hope this fixes the issue. Thanks Phi
     
  4. bubba_crx
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    bubba_crx Well-Known Member

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    my light kept coming on every once and a while, changed the sensor a cpl weeks ago, so far the CEL hasnt came back