code po411

Anonymous
timer Asked: Oct 23rd, 2013
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Question Description

have 2007 Saturn ion 2.2 engine code comes up po411 secondary air injection incorrect upstream flow detected what is this

Tutor Answer

duingpung
School: Carnegie Mellon University

P0411 = Secondary Air Injection System (B2) - Incorrect Flow
You should check the Secondary Air Injection System: Air Injection Pump, Air Injection Solenoid Valve, Air Hoses & Connections.

P0411 Secondary Air Injection System Incorrect Flow Detected
p0411 is a generic code, probably a vacume leak,vacume hose broken check this first, check the air pump turn on the car but it needs to be cold, you should hear a high pitched whine, this is the air pump running,there are 2 hoses one suction one blowing thishose should be going from the air pump to the air cleaner disconnect that and see what the volume is should be pretty strong.
But mostly you probably have a broken vacume line somewhere

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Anonymous
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