A4 (B8 Platform) Discussion Discussion forum for the B8 Audi A4 produced from 2008.5

Check engine light on

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Old 09-13-2017, 02:15 AM
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Default Check engine light on

Hi all

My Audi A4 2009 with faults P0171 and Fuel Trim bank 1 system too lean and P0088 fuel rail system pressure too high. Sometime engine shut off when driving. High pressure at idle about 4 kpa, low pressure about 6 to 8 bar at idle.
Do something wrong and which one could i check?

Have i nice day
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