Secondary Air Injection (AIR) system P0410 Can we fix it ?!?

[@Longtrailside]

Even when you think it may not be valuable to you, its always valuable to that one person who really needs it. Thanks for posting.

[@robinsonsauto]

Longtrailside very true!!! Thank you for the positive comment! Well said

[@tarekettabrany1266]

@@robinsonsauto despite 2 years had passed by now i have used your video to solve my car check engine light much of a thank. please if you can send me the wiring diagrams I would be grateful

[@Rene-u3m]

This video was extremely valuable to me (and I’m sure others), please continue to post more like these! I really enjoyed how you took the time to show and explain the wiring schematics and how certain things could be tested with or without a bidirectional scan tool. I very much appreciate how you took the time to show the live data and explain what we should be looking at, I just bought myself my first bidirectional scanner and as a novice DIY’er I have a hard time understanding all the live data that it gives me… Also, where can a DIY’er get the explanation that you showed us on your screen of how the secondary air system operates, that too was extremely helpful. Thanks again

[@robinsonsauto]

thank you for the compliment! i will do my best to keep them coming

[@steveo782812]

The videos are always worth it no matter how simple the fix because we get to see the proper thought process of how to troubleshoot a problem. You even took the time to show people that don't have bidirectional controls how to troubleshoot all three relays or components.

[@robinsonsauto]

Thank you for the kind words and feedback!!! Truly means a lot! Will keep them coming

[@snw56]

I chased the same intermittent code on my '05 Chevy Trailblazer. About twice a year this code would set. All the fuses, relays, air pump and wiring checked out ok. I couldn't reproduce the problem. After two years of chasing this code, I discovered the solenoid was sticking. It would work 97% of the time. I replaced it with an AC/Delco part and haven't had any more problems.

[@robinsonsauto]

Stanley Waggoner nice fix!! Thank you for sharing

[@brothrjj]

I really don't hardly make any comments, but this was one of the most thorough, professional troubleshooting videos I have seen. It's interesting to hear you say, "could it really be that easy," as you literally tracked down every single possible source of the code, and then continued to address problems after you found the most likely source. I really appreciate you sharing your knowledge. I just wish I had a professional scan tool like that. Thank you for the video.

[@ianconley6673]

You still need knowledge ...with even one of the best scan tools still require the knowledge of likely or not likely possibilities. 😂❤😮

[@EXOVCDS]

Great video Will!! Don't question whether or not to post a video. Someone replaced a lot of parts without fixing anything... your information / video(s) will be of help to people! Very thorough as always! Wow... Das Kaput Relay!!!

[@robinsonsauto]

Thomas EXOVCDS hello Thomas. Thank you for the positive thoughts 💭 and taking the time to watch and comment!! Means a lot man. Great hearing from you

[@billrimmer5596]

Thomas EXOVCDS I always like what Thomas has to say

[@airdoctor6058]

Nice to see an real technician tracing a problem. Most DIY videos are by backyard part changers. Thank you for your Great Video and tutorial!

[@bobwright992]

That's becase most don't have the scanner.

[@mikefeinstein6155]

Great video, I appreciate the step by step, my sons truck just set that code, and now I have a great starting point. Thanks it’s about time I found a guy who actually knows how to get in depth in communicating how; what & why. Keep,up the great videos. I will continue watch them.

[@spelunkerd]

Excellent system description, love the way you show various methods depending on tools at hand. Gotta think the previous tech proved the pump was bad by directly powering it, then didn't remember to check the relay as well. Two problems, both caused by corrosion in a vulnerable spot.

[@robinsonsauto]

Thank you! It’s So easy to miss things sometimes.

[@marvmcgee2598]

Dude you're awesome. I sincerely appreciate you and people like you who are willing to share knowledge. You probably can't imagine how many people appreciate your advice. Thank you so much. (Marvin Mac)

[@robinsonsauto]

Thank you for this positive feedback! Means a lot

[@joshkensmoe1691]

So cool I found this video.. It's exactly what I had to repair todsy but my plug end was pinched and both red wires were severed. After repairing the wire the pump came right on when I started it and I hadn't heard it before.. it was all fixed before I saw this but it helped me confirm it all.

[@Stars-us4gh]

I have this new part and will change soon , this video best ive seen , great step by step and love how you showed everyone the electrical , and trouble shooting

[@robinsonsauto]

Thank you for the compliment! I hope everything works out for you

[@CWfist]

Way above my paycheck level but it was awesome to watch you troubleshot this system this way, wow is all I can say, and thank you for posting this "extremely valuable " knowledge.

[@wyattoneable]

I smiled when you found the fix. I appreciate the explanation of the process if you didn't have a scan tool and the visual of the O2's working as they should. Oh yeah, that relay was spanked. Great video Will!

[@robinsonsauto]

wyattoneable hey Wyatt! Great hearing from you. Thank you for the positive feedback! Means a lot knowing the efforts are recognized! Always great hearing from you! Hope your doing well? Enjoying retirement?

[@wyattoneable]

@@robinsonsauto Retirement has been something to get use to. It's been weird but I am enjoying the time off for projects around the house. Thanks for asking.

[@MahanAuto]

very good and thorough mechanic. great job man. so glad to see people that actually find the problem and not just throw parts at it.

[@robinsonsauto]

Thank you for the kind words and feedback! Greatly appreciated

[@daviddanyko2926]

great video. I especially like the step by step analysis. check, prove then proceed. Dave.

[@Diagnosedan]

Great Video, and of course it's worth uploading. Just think of whoever replaced all that parts on the car, it reminds us there is a lot of demand for these kind of video's. Glad to see you uploading again, i always enjoy your video's👍

[@alanbarnes4991]

Hell yeah, this video was worth putting out there. I have a 2005 trailblazer with a 410 code and what you just showed me was amazing Thank you so much.

[@marcwarner9165]

Thank you for this video. When I checked out the relay next to my pump I found that some AH mech unplugged it thinking they had a suckered. I cleaned up the contacts plugged it back in and so far seems fine.

[@makdady66]

GREAT VIDEO, I liked how you explained every detail and how to check it without the bidirectional scan tool, best video I've seen keep up the AWESOME JOB...

[@robinsonsauto]

Thank you for the compliment!

[@dc5723]

Welcome back Will. Awesome diagnosis and fix.

[@robinsonsauto]

RareDiamond Ching thank you!!! Glad you enjoyed

[@TheDisgruntledMechanic]

Always worth putting out a video with a great diagnoses process. Thanks Will and great to see you back making videos!

[@voidisyinyangvoidisyinyang885]

1st time I saw a schematic worked through for diagnosis

[@mikecont9742]

Great step by step video. It was absolutely worth you making this video. Thanks for taking the time..

[@robinsonsauto]

MIKE CONT thanks tor the feedback! Im glad you guys enjoyed. I will try not to second guess again lol. your welcome!

[@Badge1122]

Finally someone found the problem.

[@rogerb649]

Thank you for bringing us along, we missed you. Glad your okay.

[@robinsonsauto]

roger b your welcome!!! Glad to be back. Missed you guys too!!!

[@fire7765]

I always appreciate the time and effort you put in making these video...

[@robinsonsauto]

gto 55 thank you for acknowledging the efforts!!! Means a lot 🙂

[@elcheapo5302]

Welcome back, Will. One of your best vids yet. Thanks for sharing!

[@robinsonsauto]

El Cheapo thank you!! 😊that’s awesome!! I’m glad you enjoyed

[@roadkill5333]

DONT PAY THE RANSOME, HES ESCAPED!! Welcome back, Will. Where ya been!! I almost forgot about you. ALMOST!!! Glad you're back!!

[@robinsonsauto]

roadkill5333 hahaha let me run free for awhile... I’m enjoying this positive feedback way to much 😂 Been a busy time for me.. lots of changes in my personal life. But I’m doing well still healthy I believe lol

[@Outdtdmdl]

this is great information thank you. but for the people that dont have a fancy dancy controler like you have, are there other ways to trigger these parts? how much did your check/controler cost you?

[@ManicMechanic007]

Always a treat to watch you work, thanks Will.

[@robinsonsauto]

ManicMechanic007 thank you!! Thanks for taking the time!! Nice hearing from you

[@jmead6121]

Thanks ..great explanation My 04 envoy pullin 410 code ..its derivable BUT after warm up engine looses a lot of Power for a few seconds to maybe a min - 2 then it runs like an scalded dog Again & them repeats over & Over ..so gota figuar out it its an Bad O2 upstream o2 down stream or replay or pump itself or Check Valve on engine ..thanks alot ..give me an good start to get my daily driver back up ti normal

[@chrisfreemesser]

Welcome back Will! Glad you were able to track down that faulty relay...feel bad for the guy who fired the parts cannon at that thing and missed the target though.

[@robinsonsauto]

Chris Freemesser thank you!!! It’s great to be here! It’s a learning process right. Thanks again for all your support to the channel. it’s recognized!!

[@HowtoAutomotive]

When testing secondary air injection systems I like to think of it in three sections electrical side mechanical side and The minoring side.

[@robinsonsauto]

How to Automotive that’s a great thought process!! It’s great seeing you here!! Thank you for taking the time! Much appreciated

[@HowtoAutomotive]

Love you Channel I always pick something up every time I watch 👍

[@jaedyn121501]

@@robinsonsauto I have a question about your video on the secondary air injection relay. [e-mail]

[@bobmcginnis8620]

Thank you so much for this awesome video. Really helped me out and I learned about the Code P0410. Very thorough.

[@Kittycat-ly3]

thank you, i threw parts at this vehicle, but never replaced the relay, pump kicked right on!!! thanks!!!

[@enriletrinidad3378]

Great video. Your step by step troubleshooting is just super and very clear. Thanks a lot. You’ll make a great instructor.

[@SuperMarioDiagnostics]

Good to see you back! Love the step by step process 👍

[@robinsonsauto]

Super Mario Diagnostics thanks man!!! I’m glad you enjoyed!!! Happy to see you here!

[@DylanRabier]

Those damn parts changers. Great to see you diagnose this the way it should. Thanks for sharing! 👍

[@robinsonsauto]

Dylan thank you for the compliments, your welcome anytime

[@antoniolee6211]

I have a 05 chevy trailblazer air problem what do I check from and thanks you for the help 😊

[@robertweir9034]

I missed ya big guy. I think the evidence of rust and corrosion proves water intrusion. Sounds like others shot the parts cannon here but, you being a gentlemen, did not point fingers. Thanks for sharing Will, puts a different perspective on trouble shooting. I suppose everything could have been tested using a power probe. Maybe next time you can troubleshoot it the hard way, using test lights, then prove it with the scanner. Lol. Just a suggestion.

[@robinsonsauto]

Robert Weir thank you for the compliment and sharing your feedback! Glad you enjoyed the process.

[@66crush9]

At least the computer is not there like some cars do, just crazy lol... perfect place to get water intrusion; great video man!

[@billk5727]

Good to see you back with videos! Awesome teaching, I understood everything you presented. Take Care, Bill

[@robinsonsauto]

Thank you!! Happy to be here. And thank you for the positive feedback! Very motivating

[@jamesbruno5896]

Excellent tip Will using the test lamp as a current limiter, thanks for sharing!

[@robinsonsauto]

Thank you 😊 better safe than sorry right. Your welcome anytime

[@maxpain9111]

Great video wish i lived close to you a good honest mechanic is hard to find. 👍👍👍

[@DK-vx1zc]

really great video! Nice to have you back.. thanks for sharing

[@robinsonsauto]

D K thank you! It’s great to be back. Your welcome anytime

[@DannyPastorius]

Thanks for the info. My 2005 GMC Envoy has the same engine as the Trail Blazer. Very informative, but my vehicle gives the code while driving. Any ideas?

[@chrisi1909]

Your Viedeos get better and better - Quality and Explainatory !! Thank you und hope to see more in the near Future !

[@robinsonsauto]

chrisi1909 thank you very much for this positive feedback!!! Very motivating to say the least

[@wysetech2000]

Excellent diag and repair., Will! 👍 Nice to see you again 😊

[@robinsonsauto]

wysetech2000 thank you!! It’s great to hear from you again!

[@gonzgarr1592]

Will great to see you back with a great video with great info thanks

[@robinsonsauto]

gonz garr thank you!! Glad to be back with you all!! Missed this part more than anything!! Getting to interact with everyone! It’s Very motivating to me..

[@cpcoark]

excellent video. I am about ready to do this same job on a 2004 trailblazer

[@daviddasilva4897]

Nice video Mr Robinson,very well explained

[@robinsonsauto]

David Da silva thank you!!

[@jameszx7]

EXCELLENT video. Learned a lot. Keep it up!

[@robinsonsauto]

Thank you! I will try picking back up, life events had me side tracked for a little. I have truly missed this, then when I read feedback like this it reminds me why~ motivational, thank you again

[@MPier]

great diagnostic routine if you have time. in a busy shop, when you see a new computer, new air control valve and new pump, you should go straight for the relay, disconnect it and check the terminals if you don't see any corrosion. spending 30 minutes on-camera alone makes me think that those new parts were most likely replaced by the same person here.

[@aaronlopez2558]

Thank you it can’t be more clear than that man excellent video

[@Elcapulove]

Good morning family and thank you for the valuable information 👍👍

[@Bediasman]

Glad to see you are back

[@robinsonsauto]

Bediasman thank you 😊

[@t.real_adams6898]

I have a 08 Chevy impala charged both air pumps and the a new code popped up.. P2440 Current DTC 1/1 Secondary_Air Injection System Switching Valve Stuck Open Bank 1

[@armandomarin-arias4021]

Great video! From San Juan, Puerto Rico.

[@curlymyhero]

Sir yur explanations r so vivid that u should b college courses! And I liked the ground side testing of the relay w/ the power probe!

[@noodlesracing117]

Excellent and thorough work.

[@robinsonsauto]

Thank you!

[@Omnious2000]

Thank you I appreciate this video I changed the relay on the secondary air pump and the pump turned on and the code went away

[@debbiebrown5449]

The secondary air injector in my 2004 trailblazer has been changed out three times. I was gonna go back and get it changed again and then the mechanics tried to talk me into looking at an electrical problem. Now that I watch this video, I only have to figure out one thing how to get my trailblazer up high enough to get underneath it to get that Piece out and check it.

[@billyyoder8171]

Thank you very much Will. Great job brother. So nice to see you. Been thinking about you. Have a blessed and safe week.

[@robinsonsauto]

Your welcome anytime!! Glad to be here. It’s great hearing from you as well!

[@Cruiser007]

Hi, I was wondering if that bad relay also activates the solenoid that the air pump is connected to? My air pump is working but the new solenoid I put on is not opening/clicking, like it's not getting any power.

[@jgeorges3061]

Excellent video/info and what scanner you using Will thanks.

[@robinsonsauto]

Thank you! I’m using the Autel elite

[@victorvalle4465]

Great video super helpful thank you!!and blessings for you and family

[@ericcorse]

Good video Will I was just thinking about you, its good to know everything is OK. Its also good to know my TB has a vacuum cleaner.

[@robinsonsauto]

Eric Corse thank you 😂 vacuum cleaner! That’s a brilliant idea 💡 next video I will show how to burn trash in the cat!! using the onboard vacuum 😂😂😆

[@ericcorse]

@@robinsonsauto Awesome

[@esautoworx3682]

Better explanation, ever, thanks a lot for your video

[@thomascuzzens279]

Great video, replaced pump, valve, relay, still throwing P0410 code. Any Idea? Thank you

[@joecraigslist9467]

Well done mr Robinson.

[@robinsonsauto]

Thank you!

[@1hlyGOD]

Great video ...good to see u back ...as usual very informative

[@robinsonsauto]

Drews Auto thank you!!!! It’s great being here! Thank you for taking the time. Means a lot

[@patrickwhite2730]

I thought your video is awesome and taught me a lot so no your video was not pointless

[@bigfootemobileauto9734]

Thank you for that informative great video Will! So the secondary air injection pump is just for testing the 02 sensors? Is there any other use for it? & Yes your video was very informative and helpful. I like the way you explain things and give other useful information...I see you’ve learned well from the other masters! great job. Thanks, Doug.

[@billyyoder8171]

Hi Doug. The purpose of the secondary air injection system is to help reduce hydrocarbon emissions during cold start. During cold start, the fuel system control is in open loop for a few seconds. The fuel air mixture will be rich because the ECM will not be fine tuning the fuel control (trims). The secondary air injection will allow added air (oxygen) into the exhaust stream to mix with the extra fuel in the exhaust (that did not burn in the cylinders). This will give the catalytic converter(s) enough air to allow the extra fuel to create the catalytic effect which will allow the catalytic converter(s) to heat up quicker. This will help lower the emissions quicker/sooner. The testing procedure he is describing in the video is how the ECM/PCM does a self test of the secondary air injection system. During closed loop, the oxygen sensors are signalling normally and the fuel system is controlled by the ECM/PCM (trims). If the secondary air injection system is working properly, the ECM/PCM expects to see the oxygen sensors voltage drop (go lean) when extra air is pumped straight into the exhaust stream. Note, if the vehicle is equipped with AFR sensors instead of oxygen sensors, the AFR sensors voltage will go up when the extra oxygen leans the exhaust stream. Hope this helps.

[@robinsonsauto]

Yes exactly!!! Thank you very much Billy for sharing this! Greatly appreciated

[@billyyoder8171]

@@robinsonsauto thank you Will for everything you do for the community. You and many others are a blessing to multitudes around the world. Have a blessed and safe week.

[@bigfootemobileauto9734]

Billy Yoder Yes thanks for that Billy, and as I understand it the AFR sensors voltage goes up and regular oxygen sensors is the opposite, voltage goes down or am I thinking of amperage on those? Just brushing up my knowledgeable information that I need to know. Thanks again, Doug

[@billyyoder8171]

@@bigfootemobileauto9734 hi Doug. You are correct. Regular narrow band oxygen sensors voltage goes down when lean, up when rich. Wide band (A/F ratio) sensor data will show voltage or amperage (or display both) doing the opposite.

[@josevargas3384]

I replace the solenoid I replace the pump and the relay I checked on the harness it has power but the other harness that has a short cable I didn't see any power there what are you thinking might be

[@chesummerfield1309]

Im currently having the same issue but with an 07 trailblazer p0411 code, ive tried everything even removing expansion plugs on head to clean ports of carbon but still throwing p0411 code.. any clues

[@donfiggs5545]

Great teaching lesson. You need to have the correct wiring schematic and be able to follow the circuit.

[@HighOnTheSound]

Thanks for this video!!! Especially the tester trick to check the relay

[@sbjorgy]

thanks for the information, I have a problem on a C5 2002, so I have to find the relay now.

[@scuba422123]

classic case of parts cannon activity was going on! all parts do fail but not the pcm when the monitor is ran the headlights will slightly dim this is normal

[@robinsonsauto]

scuba422123 thank you for the feedback. In his defense the PCM was replaced due to another fault. We still have to account for this during the initial visual inspection.. we just never know.

[@Meantime5]

It is of great value to a lot of us, thanks!

[@PaulCTownsend]

Great diagnosing and video thank you.

[@getsome3329]

Hello, If you don't have a $2000 scan tool, and your trailblazer doesn't stay at a constant rpm while driving, without codes, what would you replace first? sorry for the dumb question. TIA!

[@miketnkz3465]

I have a mercedes ml320 and its cranking but its not starting, qnd a diagnose said its the secondary air inyector is it possible that the car dosent work just for that?

[@Termnator2000]

Could this cause it to rough idle and stall with heat and ac on? I don’t think it will but I only have this code and I can’t use my ac or heat without it instantly stalling on me. I have done the following, cleaned out the throttle body, changed fuel filter, spark plugs and coil packs, evap system. Stumped. I don’t have any other codes except this one

[@tommygunzz7829]

Good Information, having this issue as I comment, thanks

[@joebush5463]

great vid good to see u back

[@robinsonsauto]

joe bush thank you! Glad to be here

[@NewLevelAuto]

Awesome video as always Will !

[@robinsonsauto]

New Level Auto thank you Keith!!! Means a lot man

[@payasito8132]

Great video what type of scanner you using ?

[@miroslavmar249]

what program do you use for electrical diagrams?

[@rgtgt9248]

great job thank you very much for your information , I do have that same simtoms I hope that of fix my problem .THANK YOU

[@lilzueyharo8754]

I have replaced everything, check valves, pump motor, vacuum solenoid, hoses and still getting p0410. When I look at live data at startup and i look at air injection commanded status it says “UPS” after 30-45 seconds it turns off like it should and then commanded status says “off”. Name is Jose Haro. I’ve inspected everything, power, grounds, resistance but only thing I haven’t inspected are the O2 sensors, Can these cause a P0410 if there response in reading the oxygen amount at cold start? Please help

[@معتزالصوفي-ت6ب]

Thank you for this grate video but for p0418 secandry air pump relay whare that relay position or number pleassss and thanks

[@justforkiks29]

What service are you using for wiring diagrams?

[@davidquinn6161]

He probably uses a professional system for his wiring diagrams such as Alldata or Mitchell On Demand. These require subscription fees. For us amateurs, a good source of free wiring diagrams is BBBIndustries available on the Internet.

[@robinsonsauto]

Yes David is correct. Thank you for sharing!! Great recommendation. BBB

[@shanejohnson7447]

Will this make the vehicle idle rough until it warms up?

[@jameswamser5687]

Really talented mechanic!!! Thank you!

[@nhuthungdam6106]

Great step by step troubleshooting video! I learned a lot from this. Thank you for posting it. I will use your tips of troubleshooting and try to fix problem code P0410 in my 2002 Oldsmobile silhouette this Friday.

[@AndreyCastiblanco-w7u]

Could you help me? I have a code P 0418? I replaced the secondary air injection valve and the oxygen sensor and it keeps giving me the code. It goes away for a moment and then appears again.

[@shack_67]

Hey Will, have really enjoyed all of your vids. Would like to find out what your thoughts are on the 2015 z71 4x4 Silverado. My first 4x4 and am just curious what your thoughts are about the truck itself. Mine has approximately 72k on it at present and the trans fluid along with the rear, front diff, and transfer case have not been changed out. Do you feel it is critical to change these out soon. Thanks ahead for your response.

[@josevargas3384]

Hi Robinson, I have a similar problem on my trailblazer 2006, I've changed the pump relay, but the pump won't turn on

[@robinsonsauto]

Where are you located?

[@josevargas3384]

@@robinsonsauto I'm in Chicago

[@josevargas3384]

I would happily take my car to you

[@brucelott3583]

look up Innovative Products of America terminal cleaners. They make several styles of tools for that purpose and they work great, in addition to being affordable. Several sites sell their products.

[@robinsonsauto]

Thanks for the recommendation... will look into them for sure