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Old 07-15-2012, 11:20 AM   #1 (permalink)
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Trouble Code P0411

My Impala is back with a code P0411, Secondary Air Flow

This is six times it's been back at the dealer and they keep replacing the air pump and valve. Obviously throwing new parts at it isn't fixing the problem.

Anyone else having this issue?

Nate Breece
2009 Impala LT 3.5L V6
1994 Dodge B250 5.2L V8
1985 Dodge B150 5.2L V8
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Old 07-15-2012, 03:19 PM   #2 (permalink)
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Not having the issue, but the GM shop manual has a very detailed troubleshooting procedure for this code, involving checking air pressure and measuring resistances of components. Suggest the dealer may want to have a deeper look into things.

2008 LTZ - 205,000 miles
1981 CJ-5 - 171,000 miles
1989 F150 - 217,000 miles - SOLD
2014 F150 - too new to rate
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