obdII code p1413

[David Despain]

Hello everyone first time poster long time lurker. i have been watching these forums for a while so i kinda know the routine. i have searched but no one seems to have posted this particular problem before. had autozone pull the code after the ck eng lite came on and it was p1413.
Secondary air system fault bank 1Drive cycle D:Signal out of range - above maximum
any ideas. 2000 soccer mom disco 37k miles no recent maint (this is the first problem actaully). we bought it 1 yr ago as a certified used vehicle and i think the one year warrenty is expired by a few days now. i will dig into my maintainance manual tonite, but any help would be appricated

 

[Chris-St Louis]

DTC P1413
Secondary air system fault bank 1 Drive cycle D:Signal out of range - above maximum.

Possible causes by suggested order of priority:


Connector C0879, Connector C0636, Connector C0572
Connector C0641, Connector C0563
Fuse 37 (30 Amp)
Secondary air pump.
Secondary air valve.

 

[David Despain]

is the secondary air pump the one that sounds like a hairdryer that runs for a few minutes at start up? that one is coming on.

 

[Chris-St Louis]

Sounds right.

 

[David Despain]

thanks for your help i will look at it tonite after work

 

[Chris-St Louis]

Keep in mind, the computer is commanding that motor on, and for whatever reason, it is not turning on.

 

[David Despain]

my wife reported the problem to me yesterday and last nite i took it to get it scanned. and when i drove it the electric air blower motor was coming on. i could hear it running and then shut off like normal.

 

[Chris-St Louis]

my wife reported the problem to me yesterday and last nite i took it to get it scanned. and when i drove it the electric air blower motor was coming on. i could hear it running and then shut off like normal.

It's working, the computer is turning it on, but the computer doesnt know its working.

If I remember, the computer checks the voltage drop accross the replay to turn it on.

Hmmmm, I never had this before.

Or maybe, the computer sees the o2s respond when it signals on the pump, which makes me think the valve is malfunctioning.

Take a look at this........


I think I would chase that valve.

The SAI vacuum solenoid valve is located at the rear LH side of the engine and is electrically operated under the control of the ECM. The SAI vacuum solenoid valve is mounted on a bracket together with the EVAP system purge valve.

Vacuum to the SAI vacuum solenoid valve is provided from the intake manifold depression via a vacuum reservoir. A small bore vacuum hose with rubber elbow connections at each end provides the vacuum route between the vacuum reservoir and SAI vacuum solenoid valve. A further small bore vacuum hose with a larger size elbow connector is used to connect the SAI vacuum solenoid valve to the SAI control valves on each side of the engine via an intermediate connection. The SAI vacuum solenoid valve port to the SAI control valves is located at a right angle to the port to the vacuum reservoir.

The intermediate connection in the vacuum supply line is used to split the vacuum equally between the two SAI control valves. The vacuum hose intermediate connection is located midpoint in front of the inlet manifold. All vacuum hose lines are protected by flexible plastic sleeving.

Electrical connection to the SAI vacuum solenoid valve is via a 2-pin connector. A 12V electrical power supply to the SAI vacuum solenoid valve is provided via the Main relay and Fuse 2 in the engine compartment fusebox. The ground connection is via the ECM which controls the SAI vacuum solenoid valve operation. Note that the harness connector to the SAI solenoid valve is grey, and must not be confused with the harness connector to the EVAP system purge valve which is black.

The ECM switches on the SAI vacuum solenoid valve at the same time as initiating SAI pump operation. When the SAI vacuum solenoid valve is open, a steady vacuum supply is allowed through to open the two vacuum operated SAI control valves. When the ECM breaks the earth path to the SAI vacuum solenoid valve, the valve closes and immediately shuts off the vacuum supply to the two SAI control valves at the same time as the SAI pump operation is terminated.

If the SAI vacuum solenoid valve malfunctions, the following fault codes may be stored in the ECM diagnostic memory, which can be retrieved using 'Testbook':



P-code Description
P0413 SAI vacuum solenoid valve not connected, open circuit
P0414 SAI vacuum solenoid valve short circuit to ground
P0412 SAI vacuum solenoid valve powerstage fault - harness damage, short circuit to battery supply voltage

 

[David Despain]

ohhhh ok now i get what u are saying.

Hmmmm, I never had this before.

also not something u want to hear from your doctor.

 

[David Despain]

EXCELLENT!! Now that is some detailed trouble shooting help. ill just print this page off and take it home tonite. i cant thank you enough i will let you know what i find
david

 

[Chris-St Louis]

Let me know if I'm right.

Check for 12 volts at the plug.

Then apply 12 volts to that valve, and see if it lets vacuum flow.

I'm betting it wont.


Those damn dealer techs! They dont know anything!

 

[Torg]

Not adding much from a technical perspective, but maybe some help further diagnosing....

My 2000 has been throwing that code for awhile now. I have the original plastic idler pulley, which I have procrastinated about replacing, and I get the moose howl at stop lights which I am told is the belt slipping due to the aforementioned plastic pulley. I do have a new belt and a new pulley, both of which will go on soon. The point of telling you this is that I have pinpointed the CEL coming on at the exact same time that I get the howl from the slipping belt. It is always P1413.

Not discounting that great writeup from Chris-SL but it may be a simpler fix. For me it appears to be a direct connection between the slipping belt and the CEL coming on (the belt slips enough to somehow throw off the SAI data, light turns on). I will be able to confirm once I get the new pulley/belt combo on (someday...)

 

[Chris-St Louis]

NOthing taken!

No offense at all. Whatever solves the problem. I'm think skined.

Thanks though! I spent last night trying to figure out why your truck would get that code with a belt problem. Thats a stumper.

 

[David Despain]

well last nite i looked at lots of stuff both sai valves the control solenoid etc and this is what i found. keping in mind the code is for the left bank, the manual says specfically that the code means sai air is not reaching the catylist. i unbolted the LH valve and sucked on it and it didnt appear that anything was happening. so i did the same to the RH and it moved. so i filled the valve chamber with kroil and let it sit for a minute or two then cleaned that out with some LPS zero-tri (a cleaner/degreaser) then sucked on it again and it moved! in fact more easily than the RH one. then i checked for voltage at the grey conecter on the sai solenoid. had about 9 volts there. pulled the sai sloenoid off and checked with 12 power supply it works great. when i pulled the vaccum lines off the solenoid the small one that goes to the vaccum resisvoir (sp?) went hiss so i know the vac supply and check valves are working. so basically im satisfied that its good enough now. im waiting for my obdII scanner to arive to reset the light, that should happen next week. but since the system only ever operates when the eng is cold and it always lives in the garage it only ever comes on for about 30 seconds. and since i think it will work now i bet its fixed good enough for now. thanks for everyones help. also i have no belt noise and after last nites session, from what i have read in the manual there is no correlation between belts and the sai system. the only thing i could think of would be a change in vaccum supply if the belt slip is in relation to eng load.

 

[Chris-St Louis]

Hurray!

It sounds like it was the valve! That great news, and it makes sense.

I dont get to do much diagnosis now at my new job, so its fun to do it.

 

[David Despain]

cleaning that valve and freeing it up must have done the trick because the light went out thanks for the help

 

[Dawgfan6]

Thanks to Chris-St. Louis and David Despain!!

I had the service engine light on (2000 LR RR 4.6 HSE purchased recently off Ebay Motors), with the P1413 code (pulled at Advanced Auto for free). I searched and read this post. I'm not terribly mechanically gifted, but printed out the description outlined by Chris-St Louis, and carried to the vehicle. After studying the description, to my amazement, I understood the layout. Chris...that is a simply incredible description!! THANK YOU! I then performed the same removal/cleaning of the valve pioneered and described here by David Despain. After reinstalling the valve, I cranked and drove three or four times in a row, hoping the light would go off. No luck. However, when I got in to drive home from work yesterday...the light was gone! I have never posted here, but wanted to thank you for posting in this forum. It really helped me!

 

[Chris-St Louis]

Thank you Dawg for your kind words. I have to admit, it is fun to see this forum help as designed.

Stop lurking and post more!