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Lambda Wiring Diagram ?

Discussion in 'A3/S3 Forum (8L Chassis)' started by A3 T, Jan 12, 2014.

  1. A3 T
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    A3 T Lord Of The Rings

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    Does anyone have a wiring diagram on the lambda sensors ?

    I want to check all the wiring and need to know if the wires that go to the sensors go straight to the ecu or if they go to the fuse box first.
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  2. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator

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    all bar one goes to the ecu, that one goes to fuse box + 12 ve
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  3. A3 T
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    A3 T Lord Of The Rings

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    Thanks for that ;)

    Is it the pre or post cat one that goes to the fuse box ?
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  4. Lewis583
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    Lewis583 Active Member

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    They both utilise the same feed. F43 10AMP. Also using this feed is MAF/EVAP valve/SAI solenoid/SAI relay.
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  5. A3 T
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    A3 T Lord Of The Rings

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    So are you saying that they both go to a 12 amp fuse in the drivers side fuse box before going to the ecu?

    Also if their on the same feed as the MAF, could a dodgy MAF bring up the error code I'm getting tin this thread:



    http://www.audi-sport.net/vb/a3-s3-forum-8l-chassis/202985-b1-s2.html
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