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Intermittant failure to start

MJCAUDI Sep 29, 2006

  1. MJCAUDI

    MJCAUDI Member

    36
    0
    6
    Hello all. I have a A4 B6 2002 1.8T 163BHP BFB Engine.
    After the car has been standing for a week I tried to start , engine cranked but would not start. After few mins fired up ok. ( 110,000 miles on clock ).
    Any tips would be apricaited before I decide to take to dealer

    There are a few fault codes, I assume the Short to Ground
    ones are secondary and caused by main fault.

    I have ordered a new 02 sensor because of this one:

    17522 - Oxygen (Lambda) Sensor; B1 S2: Internal Resistance too High
    P1114 - 002 - Lower Limit Exceeded

    could this be the problem?? would this prevent starting





    Here is the VAG.COM report:

    VAG-COM Version: Release 512.4-UD

    Control Module Part Number: 8E0 909 518 AA
    Component and/or Version: 1.8L R4/5VT G 0004
    Software Coding: 0011501
    Work Shop Code: WSC 12848

    17843 - Secondary Air Pump Relay (J299): Short to Ground
    P1435 - 002 - Lower Limit Exceeded - Intermittent
    17938 - Camshaft Timing Adjustment: Short to Ground
    P1530 - 002 - Lower Limit Exceeded - Intermittent
    17829 - Secondary Air Injection Solenoid Valve (N112): Short to Ground
    P1421 - 002 - Lower Limit Exceeded - Intermittent
    17697 - Boost Pressure Control Valve (N249): Short to Ground
    P1289 - 002 - Lower Limit Exceeded - Intermittent
    17633 - Fuel Injector for Cylinder 1 (N30): Short to Ground
    P1225 - 002 - Lower Limit Exceeded - Intermittent
    17635 - Fuel Injector for Cylinder 3 (N32): Short to Ground
    P1227 - 002 - Lower Limit Exceeded - Intermittent
    17636 - Fuel Injector for Cylinder 4 (N33): Short to Ground
    P1228 - 002 - Lower Limit Exceeded - Intermittent
    17634 - Fuel Injector for Cylinder 2 (N31): Short to Ground
    P1226 - 002 - Lower Limit Exceeded - Intermittent
    17833 - EVAP Purge Valve (N80): Short to Ground
    P1425 - 002 - Lower Limit Exceeded - Intermittent
    17955 - Boost Pressure Regulation Valve (N75): Short to Ground
    P1547 - 002 - Lower Limit Exceeded - Intermittent
    17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
    P1117 - 002 - Lower Limit Exceeded - Intermittent
    17702 - Map Controlled Engine Cooling Thermostat (F265): Short to Ground
    P1294 - 002 - Lower Limit Exceeded - Intermittent
    17909 - Fuel Pump Relay (J17): Short to Ground
    P1501 - 002 - Lower Limit Exceeded - Intermittent
    17771 - Cylinder 3 Ignition Circuit: Short to Ground
    P1363 - 002 - Lower Limit Exceeded - Intermittent
    17774 - Cylinder 4 Ignition Circuit: Short to Ground
    P1366 - 002 - Lower Limit Exceeded - Intermittent
    17768 - Cylinder 2 Ignition Circuit: Short to Ground
    P1360 - 002 - Lower Limit Exceeded - Intermittent
    17765 - Cylinder 1 Ignition Circuit: Short to Ground
    P1357 - 002 - Lower Limit Exceeded - Intermittent
    17522 - Oxygen (Lambda) Sensor; B1 S2: Internal Resistance too High
    P1114 - 002 - Lower Limit Exceeded

    Many Thanks

    Matthew
     
  2. Sebastian

    Sebastian Member

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    16
    Replace the fuel pump relay!
     
  3. MJCAUDI

    MJCAUDI Member

    36
    0
    6
    ok will give it a try.

    Thanks for tip
     
  4. MJCAUDI

    MJCAUDI Member

    36
    0
    6
    It seems the fuel relay was at fault. Opened the old one up and
    contacts were pitted and black.
    Thanks Sebastian
     

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