Diagnosing BMW (530i) and GM (4.2L) Secondary Air Injection System Faults - P0410, P0411

In today's live training class we cover 2 case studies involving failures in the secondary air injection system. Secondary air injection isn't used on every car, but the ones that use it are known to have issues and failures in the system. Stay tuned!!!
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[@chadmullins7553]

This is one of the best videos I have ever seen on how to handle things. You are an awesome teacher! Thank you

[@GoTechTraining]

Wow thanks so much Chad! Mike Becker, Senior Instructor

[@ozzstars_cars]

A week and a day late to class but I finally made it here Mike! All the wetness, valve blowing and relay sniffing really got my attention. It was more than Wells worth it to me, really enjoyed every minute. Great job man! -Glen

[@GoTechTraining]

3 days late to comment....mannn i'm slacking! You could say this class "checked all of your boxes" :) Mike Becker, Technical Services Instructor

[@ozzstars_cars]

Uh huh, sure did ;-)

[@elora2525]

Don't forget high exhaust back pressure. I had BMW with low air flow caused by high exhaust pressure

[@GoTechTraining]

That's a great point, thanks! Mike Becker, Senior Technical Instructor

[@d.d4184]

Nice Class Mike. Only 3 years late. A system I have never looked at close before. Nice to have some idea on how the system works before I eventually come across one of these problems.

[@brittany6229]

The vws are plagued with the water in the secondary air pumps like that bmw... thank you so much for putting this video out! Please keep up the awesome content!

[@GoTechTraining]

Thanks Brittany, seems like most cars with air pumps have water issues....Someone needs to design a pump with a drain! Mike Becker, Technical Services Instructor

[@nicknicu1787]

Great class Mike! Thanks for all you do!

[@GoTechTraining]

Hey Nick! Thanks for watching. Glad you enjoyed the class! Mike Becker, Technical Services Instructor

[@markferraro5250]

great job Mike great points I like the part where the air injection MAF would not respond to the air pump coming on the bimmer because of the blockage. you isolated the problem and got it to flow it really shows the effect of a totally pluged cat convertor on the engine MAF same principal thanks again

[@GoTechTraining]

Hey Mark! Thanks! Glad you enjoyed the class man. Mike Becker, Technical Services Instructor

[@jgeorges3061]

hello Mike, great show and video and wealth of information thankyou for all u do as scanner danner say do not be apart changer test test the system to find out any failure if every thing is good as u showed then the fix will be 100% no come back i realy enjoy ur video and learn alot.thankyou and cheeeeers

[@GoTechTraining]

Hey J Georges! Thanks for watching!!! Test test test! For sure. We want to diagnose and repair. Not guess and replace. Mike Becker, Technical Services Instructor

[@josephwash109]

The Trailblazer relay probably got some conductive saltwater intrusion inside that caused corrosion and/or an internal short circuit. I'm very interested to see the TechConnect episode where the faulty parts are dissected. Awesome class!

[@GoTechTraining]

Joseph, i've pulled it apart since then....it's not pretty inside! Mike Becker, Technical Services Instructor

[@lukecartwright1803]

Amazing video. One of my favriots. Wish u did more german cars

[@GoTechTraining]

Hey Luke, you and a lot of others I think! Unfortunately I don't have a lot of Germans come in. But when I do, I'll use em :) Mike Becker, Technical Services Instructor

[@MechanicTechnicianRepair]

Exselecte diagnostic. Nice video. Good tech

[@GoTechTraining]

Muchas gracias mi amigo! Mike Becker, Technical Services Instructor

[@martynh5410]

Very good video! I have a 2004 525i with an intermittent fault 2761 "Secondary Air System". I believe its the same fault that you described here. I got the fault soon after pressure washing under the car.. So at least I have an idea now on what to check, even though I don't have all the fancy tools that you have!

[@exmotorsports]

Absolutely a great show.. Thanks for the case studies As always, enjoyed it.. Did a great job Mike. Thanks, Kevin

[@GoTechTraining]

Thanks Kevin, glad you enjoyed it. I hope that makes people stop and think when they are diagnosing these things. Don't just order up one part. Verify the entire system for integrity. Mike Becker, Technical Services Instructor

[@exmotorsports]

Very true..crazy to think a 10 dollar part can take out a 200 dollar part.. lol Always find its the check valve/water intrusion that kills them. I was surprised to see that relay on the Chev tho.. What a great pair to do in one show. 2 different kinds of scenarios. (: Makes me think/worry about my own 530 its an 07 but I think they are still the same setup. Lol Thanks Again KB

[@GoTechTraining]

I think this demonstrated 2 scenarios where if the tech diagnosing these didn't do his job all the way, there would have been comebacks...hope your BMW doesn't give you any issues! Mike Becker, Technical Services Instructor

[@oeungmao1]

1997 BMW air injection incomplete...is pcm, in this case, monitoring h02s1 or MAF ? Or both ?

[@stevenjames7073]

Thank you for sharing .

[@GoTechTraining]

Thank you for watching! Mike Becker, Technical Services Instructor

[@2326TOM]

very good. Thank you.

[@GoTechTraining]

Hey Cylde, thanks for watching! Mike Becker, Senior Technical Instructor

[@MaicSalazarDiagnostics]

Hey Mike great video! On identifix you can access OEM wiring diagrams as well.

[@GoTechTraining]

Hey Maic, thanks! Yeh, I should have probably grabbed that. I didn't want to use any of those...but our AllData site was down for whatever reason. :( Mike Becker, Technical Services Instructor

[@mikeburton1733]

Once again, another great class Mike. That's the largest test light I've ever seen. lol. BTW I believe Keith deserves a Wells Tech T-shirt with a blue wrench on it. Thanks again Mike.

[@GoTechTraining]

Thanks Mike... Hahah the 6 amp test light :) Keith deserves way more than a t-shirt! Mike Becker, Technical Services Instructor

[@BrandonF601]

Loved the video as always. Got the same screen from Alldata earlier today.

[@GoTechTraining]

Thanks Brandon! Still down today...something went wrong over there lol! Mike Becker, Technical Services Instructor

[@prestonmiller6528]

Brandon F alldata hq has had to deal with issue with the California fires taking place.

[@joeserrano9266]

Wouldn't be the purpose of the ground on the pump relay when is off is to despite the counter electric motor force when the pump is turned off and to prevent any undersigned power to turn the pump on ?

[@jasonc.4683]

Great video Mike. Thank u so much. Now I have a better understanding on these secondary air systems. Mike btw what Underhood light is that. It's very bright. Do u prefer that than others. I'm trying to find a good bright underhood light and the snap ones suck

[@GoTechTraining]

Hey Jason, thanks for watching! That is the Milwaukee M12 underhood light. I love it! I highly recommend it! Mike Becker, Senior Technical Services Instructor

[@VinceKv57]

I hope you can answer. My E46 330i 2003 I still having the P0411 and is the only code getting I replaced the old valve and the one is also is new like this video it doesn’t have a vacuum hose. Pump works with no problem. Turns on 5 to 10 seconds, Hoses are new, Already checked the under the hood fuses 20A and they are all ok. And also the one inside the compartment box the Fuse 50A is good also. What a my missing? The Secondary Air Pump MAF Sensor or the Relay behind the fuse box in the compartment Box. That controls the SAP MAF? I would appreciate tons a response for this cause I truly can’t find it what’s the cause.

[@GoTechTraining]

Hey Vinx, what about the valve that connects the AIR system to the exhaust? If that valve is bad all of that pumped air never makes it into the exhaust... Mike Becker, Senior Technical Services Instructor

[@robinsonsmotorcycleandauto3929]

Always late to the party lol. Always enjoy the videos

[@GoTechTraining]

Better late than never!!!! Mike Becker, Technical Services Instructor

[@xx1323]

Is that valve supposed to be open or closed when off the vehicle?

[@johnmckamy6398]

Does the extra ground wire dissipate the energy left in the air pump motor because its still spinning after its turned off?

[@GoTechTraining]

Well done John, it gives the energy a path to ground. After the pump is shut off it goes from consuming power to creating power...that power needs somewhere to go. Mike Becker, Senior Technical Instructor

[@d.d4184]

@@GoTechTraining nice answer guys makes total sense.

[@javiertorres9666]

hello my air pump works the relay is new all fuses are good why i still have that code it doesnt turn on like it should the monitors are complete its only that one still blinking meaning is not complete and cant find the reason why can you tell me why ill appreciate your help thanks bro nice videos btw

[@GoTechTraining]

Hey Javier, thanks! It's possible you could have a restriction in the system. Maybe the air from the pump isn't actually getting into the engine? Most vehicles have valves/solenoids that could carbon up. Mike Becker, Senior Technical Instructor

[@ToddErickson365]

The power side of the air pump is grounded when the relay is off to stop the pump motor spinning quickly (stop now). You will see the same thing on wiper motor park position switches to park the wipers qiuckly.

[@GoTechTraining]

Todd, I like the theory, but the pump takes time to wind down. It doesn't stop right away. Other ideas? :) Mike Becker, Technical Services Instructor

[@danc2014]

Motors will create a large inductive current when disconnected, it is best to flow it to ground VS spike the power line. Most relays will have just a diode for the same reason.

[@mesalazar3303]

AWSOME

[@GoTechTraining]

Thanks man! Mike Becker, Technical Services Instructor

[@heinhtetzaw1149]

I think in BMW,NC of relay connect to ground is to kill back emf of pump.Although I admire Mike,I prefer Peter style .

[@GoTechTraining]

Hey Hein, thanks for watching! Yeh, gotta kill off the EMF after the pumps shut off cause it's still spinning. Mike Becker, Senior Technical Instructor

[@pskauto6798]

Love this one! I want a shirt ! Where can I buy.

[@GoTechTraining]

Thanks Mike! Figured you would like the BMW :) You CAN'T buy one! Gotta earn it my friend. Mike Becker, Technical Services Instructor

[@DANBED20021]

How can I get a hold of you directly? (PM you) 2000 Malibu 3.1L vin code J secondary A.I.R. code P0410 keeps on popping up and Ivan fixed all of the vacuum leaks around that system but there is some kind of a vacuum solenoid that only runs with the A.I.R. during cold start! But I keep on getting told that it's called a A.I.R. diverter valve from one person then when I go to a auto parts store they list the check valves as the diverter valves and the A.I.R. diverter valve as a EGR CONTROL SOLENOID! I can send you pix of what I am talking about! U have screenshot shots! I also wanted to know if Wells makes these kind of parts. If so I would like the part numbers and where can I pick them up at!

[@GoTechTraining]

Hey Daniel, you have me right here! Or you can email me. My email is in the description of this video. Please email me those pictures. I'll take a look! Mike Becker, Technical Services Instructor

[@crzivan01]

What caused the relay to fry?

[@GoTechTraining]

Hey Lenny, excessive current draw over a period of time. Not enough to blow the fuse, but enough to overheat the relay. Mike Becker, Senior Instructor

[@crzivan01]

Thank you for responding, Mike! Appreciate what you do for the community. I'm not a tech by trade, but I love cars and working on them as well as helping friends and family. Guys like you, ScannerDanner, and DiagnoseDan are a godsend for guys like me (and I'm sure the actual automotive technicians out there as well). You do an awesome job of explaining the 'why' behind it all which puts everything into perspective and allows me to be more of a diagnostician vs a blind parts changer. Wish I knew how else to thank you, sir!

[@GoTechTraining]

Lenny, this is thank you enough! I really appreciate the kind words!!! Mike Becker, Senior Instructor

[@rogerturnbough7960]

I need this for my 2005 525i bmw

[@fernandomoran6393]

😊👍

[@GoTechTraining]

Thanks Fernando! Mike Becker, Technical Services Instructor

[@vincebauer4777]

Power probe

[@GoTechTraining]

Hey Vince, i'm not a power probe user...how much amperage can those things handle? I know they have an internal circuit breaker. Mike Becker, Technical Services Instructor

[@vincebauer4777]

Wells Vehicle Electronics i use them mostly for voltage drop test

[@GoTechTraining]

You trust it as much/over a meter? Mike Becker, Technical Services Instructor

[@vincebauer4777]

Wells Vehicle Electronics Oh ya never a dout the feed test is great 4 voltage drop test gives u your batt voltage and tip voltage easy to check for block grounds alt ect everything way faster

[@GoTechTraining]

Vince, someday I may try one out...we'll see. I'm just not sold on it yet. Mike Becker, Technical Services Instructor

[@jofmaster]

To pull an hole intake for changing a coil or a plug that is crazy engineering, So think a little before picking on BMW becouse this job will cost you only max 5 minutes on this car.

[@GoTechTraining]

What about the BMW's that you have to pull the intake to change a starter :) All cars have their rough jobs. Mike Becker, Senior Technical Instructor