Maybe this is what u need

This particular vacuum elbow will throw codes p0401,po171 and po174

It is a simple fix with only a 7mm socket wrench to fix it. First off take off you trottle body cover

Check engine light codes:
p0401- Insufficient EGR flow
po171- Lean bank 1
po174- Lean bank 2

Ford part # F8UZ-6762-AA - $15.00

Then disconnect your battery for about 5 minutes to clear your codes. reconnect and let idle for at least 5 minutes

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