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  1. #1
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    9-5 vector sport 2006
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    P1901 Exhaust pressure sensor front hose blocked or loose

    Saab 9-5 sport Vector 2006 1.9tid.

    Hi,
    I have this faultcode that just wont go away. P1901-F. It says; Exhaust pressure sensor front hose blocked or loose. But what exactly is "front hose"? I am guessing it is the ONE hose that goes from the dpf to the dpf presseure sensor in the enginebay that sits on the firewall. But is this correct?

    I had a minor leakage from turbo-exhaust coupling but that was due to a damaged gasket. Got that fixed today and thought that was the "loose" hose that made the pressure sensor spit out a fault code, but apparently not. Please help. Both dpf and sensor was changed about 5 months ago

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  2. #2
    Dave T.
    Super Moderator Dave T's Avatar
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    1999 9-3SE (2013-2015), 2005 9-3 (2005-2013), 1990 900 (1990-2003)
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    ?

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  3. #3
    Saab Fan
    Join Date
    08 Nov 2019
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    Norway
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    9-5 vector sport 2006
    Thumbs Up:   2
    The question is: what is the 'front hose' in the referenced fault code.

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