TT (Mk2) Discussion Discussion forum for the Mk2 Audi TT, TT-S and TT-RS Coupe & Roadster produced from 2007-2014

Error P0171 - Trying to replace MAS Sensor

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Old 08-29-2018, 12:04 PM
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Default Error P0171 - Trying to replace MAS Sensor

Hello Guys!
I got Error P0171 - Powertrain - System too Lean (Bank 1) on my Audi TT 2008 Mk2 2.0L
What is the most common cause of this error?
I知 would try to clean or replace the MAS Sensor to see if that痴 the cause.
I知 not an expert at all in car repairs but I should be able to manage the repair myself to save some bucks.
I知 finding just tutorials on Mk1.
Can some kind soul point me in the right direction with a picture where the MAS is located?
Any chance there is a guide for the Mk2?

Many thanks!
Fede
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