2.8l fault code P0401 - AudiForums.com

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Old 10-30-2008, 08:20 PM
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Default 2.8l fault code P0401

I took the car through emissions and it says:

P0401:Exhaust Gas Recirculation Flow Insufficient Detected

How can i fix this and get my car through the test?
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Old 10-30-2008, 08:30 PM
auditech79's Avatar
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Exhaust Gas Recirc.Flow Insufficient Detected

Probably needs a new EGR valve, check the vacuum line going to the valve before you replace it.
99 Chevy Silverado Z71 6" rough country lift/W 35" tires, 4.10 gears, (4.56 soon) S&B CAI and a flowmaster super 44 exhaust.
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16785, 1996, 28l, 96, a4, a6, audi, b5, code, detected, exhaust, fault, gas, insufficient, p0401, quattro, recircflow

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