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What exactly is P0401

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Old Oct 29, 2007 | 05:17 PM
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What exactly is P0401

I got this code today... I researched but theres no exact answer!
Is this code critical? It says insuffucient flow or something.... so i just cleared it! i noticed that before the check engine light appeared my car sounded like gona stall and i saw the drop of RPM too.


HOW CAN I FIX IT? or Is this just a random code that we get sometimes????....

Last edited by evovin; Oct 29, 2007 at 05:22 PM.
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Old Oct 29, 2007 | 05:21 PM
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Maybe this will help you out...

http://www.obd-codes.com/trouble_cod...n-flow-egr.php
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Old Oct 29, 2007 | 05:25 PM
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thanks! where can i locate the these parts >>> DPFE sensor and EGR valve?

Last edited by evovin; Oct 29, 2007 at 05:40 PM.
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Old Oct 29, 2007 | 07:39 PM
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help
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Old Oct 29, 2007 | 08:06 PM
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you have a vacum line disconnected from the bottom/backside of your throttle body. Common problem. You need to feel around a bunch to find it, but that is what causes this most of the time.
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Old Oct 29, 2007 | 08:08 PM
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if the hose is loose. Ziptie it... you may need to remove the strut bar to get good access.
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Old Oct 30, 2007 | 07:33 PM
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i will try to look for it tom. thanks guys!
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Old Oct 30, 2007 | 07:35 PM
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same thing just happened to me i checked on here and saw everyone was saying its a loose hose.... searched for like 10 mins to find it and just when i was about to give up i found it!! its a pain to find but 99.9% sure its the freakin hose!
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