Question about 1998 Ford Mustang

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Check engine light reads...po411...or, secondary air injection system-incorrect flow...what does this really mean???

Just bought the car and it seems to run well...am surprised to see this happening

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  • 43 Answers

Sounds to be low air flow. Check filter . could be a faulty mass air flow sensor. good luck

Posted on Nov 05, 2012

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Posted on Jan 02, 2017

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noranda21
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SOURCE: Got code P0411: secondary air

hows your car runninghave your injectors cleaned

Posted on Dec 01, 2010

alicantecoli
  • 22219 Answers

SOURCE: 1996 Ford F-150 XL with

the EGR valve isnt working ,disconnect any vacumn pipes that run to the valve and wires and leave it like that unless you want to fit a new one ,an older vehicle never had this contraption fitted ,they always give problem when vehicle is older so if the vehicle runs then leave it disconnected .

Posted on Aug 26, 2010

Pyrhyc
  • 2028 Answers

SOURCE: Check Engine Light

This will be with the mass airflow sensor on the throtlebody.

Posted on Jul 23, 2008

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The first fault code do you mean p1296 if so that is a cooling system malfunction you will need to check the temperature sensor.

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Engine light stay on and the code reading po411....what does that mean and how can i fix it?


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There won't be - the secondary air injection system is strictly for cold-start emissions. You won't see any effects in driving, but if you have any sort of emissions check in your state's inspection, you will fail.

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The P0410 code refers to the emissions system.
The AIR pump puts air to the exhaust to lower emissions. It takes in outside air and pumps it through two one-way check valves into each bank of the exhaust.
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. In any cold climate, especially in climates with higher humidity, this water may be more excessive. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.

In here you can find the Trouble Codes List:
The CODE mean P0411 Secondary Air Injection System Incorrect Flow Detected

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AIR bypass solenoid leaking or blocked
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