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04-27-2009, 04:47 PM
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#1
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The dreaded p0411 Error Code
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Registered User
Join Date: Apr 2009
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Hey guys total NooB here,
Check Engine Light Problem! Need Help! (2000 V-6 3.8L)
I've taken my car to multiple part suppliers (Autozone, Advanced...etc) and the only error code that their machine comes up with is the dreaded p0411 error message which translates to "Secondary Air Injection System Flow Improper".
I then ran the onboard Odometer switch activated diagnostics check and it came up with two DTC Error Messages:
DTC-9318 (Battery Voltage Low) I know, I know, I have needed a battery for awhile)
DTC-5284 (Oil Pressure Switch failure)
Worst of all, the check engine light came on the day after I bought the car used (Or 150 miles after I tripped the comp to hit the light---dirtbags)
What I really need to know is if a low-battery will trigger these error messages? Could it be that simple? I have looked into the p0411 error code and it seems to have been plaguing Mustangs since early 04 on some posts. I've got the auto parts stores machines telling me one thing, the onboard diagnostics another...) Can someone help me before 5-31-2009 when my NYS Inspection is due? (They won't pass vehicles w/ the CEL on) Thanks!!
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04-27-2009, 05:53 PM
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#2
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Re: The dreaded p0411 Error Code
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15.3 Second V8 Killer Yo
Join Date: Aug 2004
City: Baton Rouge
State: Louisiana
Posts: 12,065
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On board diagnostics are different from the scanner diagnostics. Those on board ones don't mean anything important, if they did, there would be an error light somewhere. They are not influencing your P code.
__________________
2.2L KB Supercharger, 4#, Billetflow Single Blade TB, JLT Carbon Fiber RAI, Nazty Performance Ported Lower Intake, Bassani Midlength Headers, O/R H-Pipe, Borla Stinger Catback, Tuned by RWTD --- Numbers coming soon...
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04-27-2009, 08:15 PM
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#3
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Re: The dreaded p0411 Error Code
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Registered User
Join Date: Apr 2009
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Is there any way to get a more specific read out of the P0411 code? Or should I just put it up on the lift and start snooping? |
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04-28-2009, 09:46 AM
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#4
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Re: The dreaded p0411 Error Code
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Deranged
Join Date: Jan 2005
City: Largo
State: Florida
Posts: 7,100
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try testing the DPFE sensor/smog pump The most frequent codes with a DPFE sensor issue is a P0401 and/or a P0402. Seems they can get a mositure builds up in the lines
Do this test before you go buy one
1. Unscrew the metal bolt from the outlet to exhaust system hose.
2. Have the car sitting for sometime and start the car with the hose off and check to see if air is coming out of the secondary air injection control valve.
3. Also pull the red hose from the vacuum port and check to see if the red hose is sucking in air.
Remember you have like 30-90 seconds of this air to happen and make sure the car was sitting for sometime.
__________________
Mods-MAc CAI , True Dual Flowmaster 40,3.73 ,T-Lok, 25% UDP, 3/8 Phenolic Intake Spacer ,Steeda Tri-ax, SCT Chip/Dyno Tune
Last edited by Herbstang; 04-28-2009 at 09:59 AM..
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04-28-2009, 05:55 PM
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#5
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Re: The dreaded p0411 Error Code
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Registered User
Join Date: Feb 2009
State: Oregon
Posts: 534
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well if you think you can pass otherwise a "dead bulb" is always an option... i know this isn't very helpful, but if worse comes to worse...
__________________
It's cheaper to be beat a viper than to lose in one.
1994 GT, stock gears, stock shifter, stock engine, stock rims (or knock offs).
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04-28-2009, 06:55 PM
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#6
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Re: The dreaded p0411 Error Code
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15.3 Second V8 Killer Yo
Join Date: Aug 2004
City: Baton Rouge
State: Louisiana
Posts: 12,065
Thanks: 1
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Dead bulb is useless as the test has nothing to do with the bulb...they scan the ODB port to check for codes.
__________________
2.2L KB Supercharger, 4#, Billetflow Single Blade TB, JLT Carbon Fiber RAI, Nazty Performance Ported Lower Intake, Bassani Midlength Headers, O/R H-Pipe, Borla Stinger Catback, Tuned by RWTD --- Numbers coming soon...
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04-28-2009, 07:09 PM
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#7
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Re: The dreaded p0411 Error Code
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Registered User
Join Date: Feb 2009
State: Oregon
Posts: 534
Thanks: 7
Thanked 24 Times in 23 Posts
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do you always have to put me down? jk  i didn't know that, everywhere i've ever lived i haven't had to have my car scanned or checked for anything, thanks for the info
__________________
It's cheaper to be beat a viper than to lose in one.
1994 GT, stock gears, stock shifter, stock engine, stock rims (or knock offs).
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04-28-2009, 07:16 PM
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#8
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Re: The dreaded p0411 Error Code
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15.3 Second V8 Killer Yo
Join Date: Aug 2004
City: Baton Rouge
State: Louisiana
Posts: 12,065
Thanks: 1
Thanked 100 Times in 94 Posts
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NY is retarded...I used to live there. They plug in and read your computer, however, it isn't just a simple scan. It's connected to Albany and they record some stuff into the state computers before they pass your inspection. It's pretty hard to get a "lick it and stick it" inspection in NY now. Useta could if you knew the right person, however, now albany has to pass your car before you can get the sticker...lame.
__________________
2.2L KB Supercharger, 4#, Billetflow Single Blade TB, JLT Carbon Fiber RAI, Nazty Performance Ported Lower Intake, Bassani Midlength Headers, O/R H-Pipe, Borla Stinger Catback, Tuned by RWTD --- Numbers coming soon...
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