Audi Code P0421

2003 audi a4 3.0l issues. cel. p0421 w/ engine symptoms. time for new Fsi audi a4 2002 code audiforums reply Error code memory

Audi A4 Trouble Code P0411

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P codes: 0171 & 0174

Sustitución valvula egr en fuenlabradaCatalytic converter sensor heater efficiency threshold catalyst theft ho2s p0430 warm p0030 carparts targeted clogged often oxygen P0421 – warm up catalytic converter bank 1 efficiency below thresholdHi all. mk6 golf 1.6 tdi. which one is egr valve? top or bottom? i have.

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hi all. mk6 golf 1.6 tdi. which one is egr valve? top or bottom? I have

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Check Engine Light on with Code P0421, How Do I Fix It?

P0491 vw/audi fault code: diagnosis & repair

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Check engine light on with code p0421, how do i fix it?

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