Mercedes w203 Secondary Air Injection System -Diagnosis- P0410 P0413 

C200 Exhaust Manifold : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-R3nnblfw6UQ.html

Very good instruction, also applies to my 2011 W204 C180. Thank you.

Thanks for your explanation. I will try what you suggested.

Hi, doit. I always like to come back to your videos. I still have this car. After one year I have not discovered why the switchover valve connector doesn't have 12 volts when the car starts cold. Besides the three vacuum lines that go in/out of the switchover valve, there is a fourth vacuum line hanging loose underneath the top assembly, which is connected near the vacuum line plastic tube coming from the switchover valve. I don't know where the other end should go. Any help to solve these issues is welcome. Related to this matter is how to connect a vacuum gauge in this car to do a diagnostic check. Take care doit and guys, your contributions are very helpful.

Thanks for the video. I learn a lot from your detailed explanation.

Hi Guys. Update on my previous comment. I succeeded to replace and connect loose or damaged vacuum lines, and the one I mentioned before goes to the firewall, but I don't know what is doing there. Anyway, the back headrests still do not work after this. Regarding the connector to the switchover valve, the reddish wire (red and green I think) is always negative, but the other one which is grey or white with an orange or brown line (not easy to define unless I cut the protection), don't have the positive during the first few minutes of a cold start, or so. I inspected all the relays and fuses in the boot and at the front and, in addition, two of them (K and R) were tested while plugged. Thanks, doit for your video on disassembling the intake manifold, which I partly followed to do the job. The greyish wire coming from the switchover valve seems to end up at the front fuse box; I tested one with a similar colour and it has 12V positive but it is for way too long after the engine starts. What makes me confused is that this same wire appears to have continuity with the one in the connector! I need to double-check that. I don't know yet how to connect the vacuum gauge. By the way, I have not yet tested the car on the motorway, but the idle is definitely more consistent. Regards.

Hi. Just found your channel and it's excellent 👍👏👏. Got SLK 230 Kompressor year 2000 and my pump won't shut off. Tbh never knew about it existence in my Merc until one day I've been doing some work and simply disconected the battery for about day or two. Then, when connected the battery the air pump starts working immediately!!! And won't shut off. It's gonna be working till red hot but won't shut off. I've checked vacuum lines, switch over valve , this top valve , took out and check the relay plate with k40 amp relay and some fuses ( plate looks good, no damages to soldering lines, all fuses, relays ok) I've also took out pump and dissmantled to check hows things inside ( all been good, no burnings just some dust) so cleaned, put back together. AAAAND...pump is still working 🤦🏻‍♂️ I need to check this valve at back of the engine, cuz forget about it but honestly have no more ideas what's going on. Also got P2003-2 fault and it says about undervoltage on the sensors. I've put NEW *MAF s *CAMSHAFT s *CRANKSHAFT s *waiting for 2x MAP sensors Have no idea what's happend to my Little Bastard, all been great since last year and all of the sudden some strange things started to appears. Too long list to point out. But if someone could help with pump I'll aplreciate that 👍

Very helping diagnostic...thanks

Thanks for your explanation

Just a site note. You dont have to remove the supply line. You just unscrew the check valve. You can do it if you make a special key by cutting a head of a if i remember 27 wrench. Mercedes mechanics of cors have access to original removal tool. The real problem is in the valve. Cleaning wont help. Its a design flaw. Over time the rubber seals wear out and the exhaust fumes will over time destroy your second purge valve. Tipically the last 60 - 80k miles. I think I have a masters degree for secondary air injection troubleshooting, as how long it took to find the problem :D

Sorry. I think you answered my question at the end of your video. Thank you for your videos.

Funky Awesome video. Realy congrats!!. thank you for share!!

Great video and very good instructions! You helped me to repair my 2002 CLK C200. Thank You very much! My best wishes for You from Finland. Keep going :)

Thank you It helped me get a good idea of the AIS system.

good simple explanation thanks Australia

Hi! Good work, a question for you, where is the rpm sensor in w203 111.955 motor? Thanks

you work veryhard outside

Good Video 👍have a e 200 kompressor -2001 /325 500 km 💪

Hi, thanks for the vid. What OBD reader app are you using?

Very good video¡ I appreciate it a lot big effort with snow fall, keep going!

Dear Sir Thanks for your video. Could you do another video to replace Check Valve for the same car? Thanks

Thanks for the video. Just one question....at 7:12, for the pipe, where does it come from? Thanks

Great video 🔧😀

Nice work thank you ... hope you keep warm in all that white stuff falling from the sky

Teşekkür ederim.

Hi, great videos, really useful!! What scan tool / app do you use to monitor the oxygen sensor operation? Can you use the Torque android app and a generic bluetooth ELM324 OBDII adaptor?

Thanks as always for another great video, love my c230k and these help me keep her on the road! I do have a side question, do you know what part of the intake assembly would be called the "intake manifold runner control" valve?

big fan frpm day one!!! Can you do a troubleshoot video of the fuel gauge ? my car goes out of fuel 5 km after the reserve light has com on. Thanks in advance.... I know it might take some time. Cheers and very informative video as usual !!!

Great video . i got p2031 and p2036 on 2001 Mercedes c200 w203 i clear the code i tested the o2 sensor upstream by add fuel source to the vacuum line read rich when i apply vacuum it read lean . what do you think the problem thanks

Can you tell me where the bottom hose of the switch over valve connects to please?

The two hoses on the top of switch over valve one of them clearly i can see where it is connected to shut of valve but the other one where it goes

Great videos. What type of mods are available for this engine?

Hello great video, it explained much more clearly what I needed to check, to get rid of my PO410 code. When I cleared my PO410 code, I can drive for miles 300 miles or more, but sometimes I can only drive 75 miles or less before it sets the PO410 code again. I checked everything just like you showed in the video, I have vacuum where I suppose to have vacuum, and I have pressure where I need to have pressure (on the hoses you showed). The solenoid works properly, for the required amount of time, ( I did this check after allowing the car stand over night.) Code PO 410 keeps coming back, I started having this problem at the beginning of the summer it was fine all last winter. I would appreciate any help with this problem, Thank You in advance.

Where do the third line switch over valve go to?

Hi, I know you must be busy so maybe someone else can help me with this question and do a small test for me. When I unplug the harness from the switchover valve and test the two wires I'm getting 4 volts on one wire and 11 volts on the other wire, does anyone know if the voltage is correct or should I be getting 12 volts and ground?

nice

Hello Doit_Vehicles. Am kindly asking for your advice, I have a C200 2001 cl203 coupe with M111 engine and C180 2001 s203 estate wagon with M111 engine. I want to swap the engine together gear box. Can that work? Cl203 has an intercooler and s203 doesn't has. And they have different secondary pumps.

Did this today, to clean the check valve you do not need to remove the torx holding the pipe line or check valve, just raise the car, and remove the big 27 bolt holding the fitting, you will have enough space from underneath, remove the perforated bolt, careful not to loose the two crush washers, one behind the head side and one on the other side of pipe. take a peace of 5 by 5 inch aluminum foil and slide it between the pipe and the intake manifold side, to block anything you will spray through the check valve. I used a pulverizer gun and gasoline to clean the check valve which was almost completely clogged. all the junk came out of the pipe, the aluminum foil sheets blocks all this junk from entering the exhaust system. Done! no more insufficient secondary air flow code.

Good video 👌👌👌😎👍

Blessing I have a 2005 ml350 W163 code P0412 secondary injection pump valve A malfunction, the pump runs every time the engine is cold all fuses are good my problem is I'm not getting 12volts at the solenoid when I crank the engine. Your answer is highly appreciated.

Jacob please I want to know what is real temperature of Mercedes 230. My is all to 85

Would you have any idea why my change over valve has both wires are positive? I have a 03 c230 and 2011 c300 they both are showing positive on both wires

Bonjour j'ai une c230 2002 condition très bien jamais sortie l'hiver je trouve quel coûte très chair en essence que faire Merci ! pour vos vidéo je viens dans prendre connaissance

Great video as always. Could You help me with my c180 2001 petrol, OBD scanner displays P 200A error and points me to the Powertrain. What do You think I should check first? Your videos are amazing and very well explained,keep up the good work :)

My m111.955 has an error p0141,can you make an explanation video

Where does the map sensor vacum line go?

Brother do you know about cold engine vibration? I have a Mercedes w203 c220 cdi. When the engine is cold, there is a strong vibration and Rpm is moving a little up and down in idle but after 30 minutes when it's warm ,the vibration is not any more. I have replaced both engine mounts , spark plugs, and a used egr installed. The car also smells badly when is start . Can you please help me?

Time to trade up to a snowmobile ❄☃️❄🌝

Hello , where is the secondary air pump ?

What malfunctions does it cause?

Please HELP, I have an issue on my w203 2001 standard, when i turn it on, and the engine is cold, it starts to shutt off the engine, i turn it on again and works fine, later on the road, when i shift to neutro it shutt off, what could it be? can it be fuel injection issue, oxigen issue? or vacuum lines issue???

Hi good people. I have a pipe that is hanging from my switch over valve. Please assist with connection lines. Thank you in advance

Hi doit_vehicles I got a P0410 code related to the Secondary Air Injection System. I followed your video and, apparently, all these valves work. I could only find (confirmed) that there is no power in the switchover connector when I start the engine cold. What shall I do next? Thanks in advance.

Good job bro. Where do you live?

Парни можно перевод всего. Я из Казахстана, часто вылазит такая же ошибка.что делать не знаю.

Please help, my car engine does not exceed RPM 40,000, what is the problem?

What does the bottom vacuum hose connect to.

I have C240 2007 w203 112 engine, I have problem when the engine is running, the car shaking, I tried to unplug all coil, seems like 3 coils are broken, i have changed with new coil. but the problem is still the same. The engine on low RPM shakes the car a lot, after I try to speed in a free way, the RPM can go high as I kick down the throttle, but the speed and the power of the car wont go up. any idea why this is happening?

Yes sir, can you help me out ,i have problem of my 2009model c200 kompresor, troble code p0045 ,its say super charger boost control solenoid circuit A / open, where can see the boost control solenoid

👍👌💯☀️☀️☀️☀️☀️

Where is the EGR Valve in this car?

My switch off valve exhale air,it doesnt suck air

Good day! The shutoff vavle open only in first 150 seconds? When else and why?

I run with catalytic converter deleted. Hence I can spray the injector cleaner voila! Thanks