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  1. #1
    Saab Fan
    Join Date
    07 Jan 2019
    Location
    Middletown, NY
    Posts
    13
    Saab(s)
    2001 9-5, 1999 9-3
    Thumbs Up:   0

    How to: 3 Check Engine lights : Ignition Coil Knock,1-4;Camshaft Position Sensor

    Hey Saab folks! I have a fine 2001 SAAB 9-5 wagon, 2.3t engine, but she can't pass our NYS inspection,in part because of 3 check engine problems:

    PO340 Camshaft Position Sensor A, Bank 1 Circuit Malfunctiion

    P1312 Ignition Coil Knock detection, Cylinders 1 and 2.
    P1334 Ignition coil knock detection, Cylinders 3 and 4.

    I am unclear if my friend and mechanic John can fix them; Have any of you all worked on any of these problems, and remember what you did? The Saaby is running well, maybe the MPG could be a little better, but she has power and sounds smooth.

    Any ideas?

    Thanks,
    Tunk

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    Last edited by Tunk; 11 January 2019 at 20:13.

  2. #2
    Frank
    Administrator nordwulf's Avatar
    Join Date
    30 Jul 2010
    Location
    USA - Netherlands
    Posts
    7,727
    Saab(s)
    previous: 2006 9-3, 2001-06 9-5, 2011 9-4X
    Thumbs Up:   100
    P1312 and P1334 are classic signs of a DIC and spark plugs that need to be replaced.

    i never had CPS problems before but I sounds like replacing the CPS is needed as well.

    While the DIC is a bit pricey, the good news is that it is easy to replace yourself.

    Many threads about these error codes already: https://www.google.com/search?q=P131...Asaabworld.net

    Tutorial for replacing spark plugs and DIC: http://saabworld.net/showthread.php?t=25916

    Make sure to use the correct NGK plugs for your engine.

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  3. #3
    Saab Fan
    Join Date
    22 Jul 2018
    Location
    US PNW
    Posts
    42
    Saab(s)
    2001 9-5 5 door
    Thumbs Up:   5
    Speaking with my "I get paid to fix cars" hat on -- I'd replace the spark plugs and clear the codes, then see what comes back -- there's a good chance you'll be in the clear. Saab is unique in using a resistance measurement through the coils to detect misfire. This makes Trionic very sensitive to spark plug condition. Trionic is also infamous for piggyback codes. The CPS code may be a complete ghost.

    EDIT: I should say, Saab was a pioneer in using resistance measured through the coils to detect misfire. It's more common now, but in the early days of OBDII, block mounted knock sensors were the common method.

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  4. #4
    Bruno
    Saab Addict swisssaabist's Avatar
    Join Date
    18 Nov 2016
    Location
    Cheeseland or TICTAC land
    Posts
    599
    Saab(s)
    9-5 ARC Wagon 2002 2 t auto engine B205E
    Thumbs Up:   56
    PO340 Camshaft Position Sensor A, Bank 1 Circuit Malfunctiion is tied with coil pack failure when you've changed the pack this error will be vanishing...

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