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Fault code 00290 ABS Light on

Discussion in 'A3/S3 Forum (8L Chassis)' started by betadeltamad, Dec 24, 2013.

  1. betadeltamad

    betadeltamad New Member

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    Bought myself a cheap diagnostic tool off ebay when my abs light came on last week while driving on the motorway. Plugging it in, it shows fault code 290
    [​IMG]
    Which in the provided booklet says that this is the wheel speed sensor on the right rear, believe to be offside rear
    [​IMG]
    The sensor looked pretty grubby and was a pain to get out but this is now changed for a new one, used the diagnostic tool again, cleared the fault but as soon as it says clear, the abs light goes out and then straight back on again :(
    [​IMG]
    I haven't driven the car forwards yet, but it was also beeping at me when you drive away and shows permanently the brake warning in the central display on the dash.

    What else can I check/do?

    Merry xmas
     
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  3. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    00290 - Ross-Tech Wiki

    00290 - ABS Wheel Speed Sensor Rear Left (G46)
    00290 - ABS Wheel Speed Sensor Rear Left (G46): Signal Outside Specifications
    00290 - ABS Wheel Speed Sensor Rear Left (G46): Electrical Fault in Circuit
    Possible Causes

    Open Circuit in Wiring from/to ABS Wheel Speed Sensor Rear Left (G46)
    ABS Wheel Speed Sensor Rear Left (G46) faulty

    Possible Solutions

    Check Wiring from/to ABS Wheel Speed Sensor Rear Left (G46)
    Check ABS Wheel Speed Sensor Rear Left (G46)


    00285 - ABS Wheel Speed Sensor Rear Left (G46): Mechanical Malfunction
    Possible Causes

    Excessive Air Gap between ABS Wheel Speed Sensor Rear Left (G46) and Rotor
    Short Circuit in Wiring from/to ABS Wheel Speed Sensor Rear Left (G46)
    ABS Wheel Speed Sensor Rear Left (G46) faulty

    Possible Solutions

    Check ABS Wheel Speed Sensor Rear Left (G46) Installation
    Check Wiring from/to ABS Wheel Speed Sensor Rear Left (G46)
    Check ABS Wheel Speed Sensor Rear Left (G46)


    Have you checked the sensor ring in case its bent/damaged?

    <tuffty/>
     
    #2 <tuffty/>, Dec 24, 2013
    Last edited: Dec 24, 2013
  4. betadeltamad

    betadeltamad New Member

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    So is the book wrong or is the website? Two completely different sides.....
     
  5. Lewis583

    Lewis583 Active Member
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    Your book is wrong, Autodata also says NSR (left rear).

    When you remove the NSR sensor, check to see if there is any damage to the sensor pick up area. Doesn't take a lot for the pick up ring to get damaged/corroded and take a chunk out of the sensor.
     
    <tuffty/> likes this.
  6. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    Good spot...

    <tuffty/>
     
  7. Biggied

    Biggied They called him mellow yellow.

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    The fact that the fault pings straight back would suggest sensor or wiring rather than anything mechanical with the pick up ring or air gap, mechanical faults like that on the old A3 abs system will only reapear when the car has been driven after codes cleared. Also if Ross Tek Wiki and AutoData both agree on the same side them trust them together over anything short of a dealer Vas tool.

    Ewan. (Merry Christmas)
     

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