Excellent video. Tested mine like you showed and it was working on my 2004 Toyota Avalon. 1 possible problem eliminated in my search to fix code 171. Thank you.
I had a 93 Camry with a V-6, had an EGR code come up, followed a flow chart, I had several parts in the "system" fail, finally got it fixed. Watching this video reminded me of my car🙄
@@tongo117 I also replaced the vacuum modulator. I went and bought the switching valve from the dealer on recommendation from the mechanic of the shop i took it to. Originally i had bought the egr and he said take it back they seldom go bad. So i took it back. And bought the ones i mentioned. Hopefully i wont get that light back Good video short and to the point. Cheers
I have the P0402 code and trying to fix it but found this video as all mechanics suggested replacing the modulator without even checking the vsv! My question is : would a faulty vsv test read kilo ohms resistance ?
@@medboukhicha6484 I would go ahed and replace the vsv. It will give you peace of mind and more than likely once you do it and clear the code that will take care of the problem. Dont forget to take the car for a run so that the ecm relearn the components replaced. That is what the mechanic said. Good luck!
Great video, you did a really good job .... but you went to the wrecking yard for a VSV :o holy smoke man, I thought I was cheap, I mean don't get me wrong, I go to the wrecking yard all the time but not for used VSV. It's just not worth it, how long will a used VSV last, who knows. I got for fuel injectors, entire cylinder heads, engine blocks etc, but a cheap part like a VSV, just get new and keep the receipt, if the new one goes bad just take your receipt in and get another one IJS Also, next time take a 9V batter with your to the wrecking yard next time and you can test the valve in the yard before you buy it. You don't need 12v to get a VSV to actuate.
This one is still working and I got a few more since this video each for around $2.. Big name auto stores all wanted around $65 and eBay was $22.. Thanks for the battery tip..
I have a ford500. Had p0108 for the longest time. I installed a new egr valve, no check engine light for a month, well... today the dreaded light came on and p0402 is now hitting me in the face😢
I just got that dx code for that. For my Mazda tribute how long can I drive like that ? Of course I'm get it fixed in a few days I just wanna know if I'm gonna be ok driving
I bought a toyota Fortuner 2015 model last January 2021. and i just found out yesterday that the wiring harness is not plugged... My car works fine.. should I put it back in? what are the pros and cons? thank you..
@@schlomoshekelstein908 They look kind of like they have teeth on them, except unlike a chain sprocket, each tooth has a slight twist to make it bite. Teeth can be stamped on the inside radius or the outside. A standard lockwasher doesn't always work well with brass posts or screws as found on certain electronics stuff.
97 Toyota Camry 3.0L V6 1MZ, 168,000 miles, Code P0402 two weeks ago. I tested the VSV that connected to the EGR valve to be good following your method with a 9V battery. I replaced this VSV any way (from Advance auto parts, new). I deleted codes with code scanner afterwards. But the code P0402 showed up again after 2 miles driving. I then went ahead and replaced the EGR valve (from eBay new) and deleted the code. The code P0402 came back again. Any other suggestions?
Other than what's listed on this page I have no suggestions.. Repair forum thread 1MZ FE with P0401/402 possible causes:www.toyotanation.com/threads/diy-1mz-egr-code-p0401-p0402-diagnostic-repair.357502/
I found a leaking 3-way vacuum which also connects to the EGR valve, sort of. It’s one of them in a three vacuum switch bank under the engine dust cover. Tested with a nose suction bulb and a 9 volts battery. After replacement of that vacuum switch, the code P0402 is gone.
Very helpful video.where do I buy alligator clips like yours ready to test VSV? MY 99 TOYOTA 4runner has po401 on and egr. has been replaced but light has come back on.
You can test the VSV with a fresh 9 volt battery.. www.toyotanation.com/threads/diy-how-to-test-vacuum-switching-valve-at-the-charcoal-canister-diagnose-p0446.1660178/
it's $66 bucks at the shop, it's instant and $2 at the junkyard. ebay would take a week. i know which one i'd pick, but you're too stupid to run the logistics on it I guess.
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Great video, I watched a bunch to make sure I knew what I was getting into and yours laid out the solution from start to finish so clearly. Thanks!
Glad to have helped.. Thanks for reply..
As old Avalon owner appreciate your very clear vids.
Excellent video. Tested mine like you showed and it was working on my 2004 Toyota Avalon. 1 possible problem eliminated in my search to fix code 171. Thank you.
You are welcome.. Thanks for your reply..
Excellent video. Content, presentation, editing, etc!
I had a 93 Camry with a V-6, had an EGR code come up, followed a flow chart, I had several parts in the "system" fail, finally got it fixed. Watching this video reminded me of my car🙄
Great troubleshooting video! I hate throwing parts on a problem and hoping.
Yeah I got lucky.. First and only thing I tested turned out to be the problem..
@@tongo117 I also replaced the vacuum modulator. I went and bought the switching valve from the dealer on recommendation from the mechanic of the shop i took it to.
Originally i had bought the egr and he said take it back they seldom go bad.
So i took it back. And bought the ones i mentioned. Hopefully i wont get that light back
Good video short and to the point.
Cheers
I have the P0402 code and trying to fix it but found this video as all mechanics suggested replacing the modulator without even checking the vsv! My question is : would a faulty vsv test read kilo ohms resistance ?
@@medboukhicha6484 I would go ahed and replace the vsv. It will give you peace of mind and more than likely once you do it and clear the code that will take care of the problem. Dont forget to take the car for a run so that the ecm relearn the components replaced. That is what the mechanic said.
Good luck!
@@medboukhicha6484 The vsv will read resistance(continuity) telling you that there are no shorts in the wiring inside the vsv.
Great video, you did a really good job .... but you went to the wrecking yard for a VSV :o holy smoke man, I thought I was cheap, I mean don't get me wrong, I go to the wrecking yard all the time but not for used VSV. It's just not worth it, how long will a used VSV last, who knows. I got for fuel injectors, entire cylinder heads, engine blocks etc, but a cheap part like a VSV, just get new and keep the receipt, if the new one goes bad just take your receipt in and get another one IJS Also, next time take a 9V batter with your to the wrecking yard next time and you can test the valve in the yard before you buy it. You don't need 12v to get a VSV to actuate.
This one is still working and I got a few more since this video each for around $2.. Big name auto stores all wanted around $65 and eBay was $22.. Thanks for the battery tip..
Gracias mt men
Not sure if your junkyard charges a entrance fee but you could have put that piece in your pocket.
Thats not something good to do
@@alexb5221 Amen 🙏
@@alexb5221most junkyards these days rob you themselves so id say its fait
It’s like 10-15$ on Amazon for it
Thankyou! Lexus wanted £960 to fix the VSV on my 04 Lexus IS300 including the part cost of £360.............
Good video tank’s brother
Yes Sir..
Are there 3 vsv valves in your video?
Good job 👍🏻
I have a ford500. Had p0108 for the longest time. I installed a new egr valve, no check engine light for a month, well... today the dreaded light came on and p0402 is now hitting me in the face😢
I just got that dx code for that. For my Mazda tribute how long can I drive like that ? Of course I'm get it fixed in a few days I just wanna know if I'm gonna be ok driving
I stripped the back side nut so now I cant remove my egr valve. My plan now is to replace the vsv and hope the engine light goes away.
My car doesn't want turn over at all but I see my vacuum switch valve wire is cut off so you think that's the reason it won't start?
No.. A bad vacuum valve may cause your engine to run a little rough but it won't cause it not to turn over..
Thanks ! I’ll look at mine tomorrow
I bought a toyota Fortuner 2015 model last January 2021. and i just found out yesterday that the wiring harness is not plugged... My car works fine.. should I put it back in? what are the pros and cons? thank you..
It's meant to be plugged in so doing so should not hurt anything..
@@tongo117 i just plugged it in and sprayed with wd40 because it doesnt go all the way in.. thank you
Toyota dashboards... some of them used no star washers to lock connections in place.
wuts a star washer
@@schlomoshekelstein908 They look kind of like they have teeth on them, except unlike a chain sprocket, each tooth has a slight twist to make it bite. Teeth can be stamped on the inside radius or the outside. A standard lockwasher doesn't always work well with brass posts or screws as found on certain electronics stuff.
97 Toyota Camry 3.0L V6 1MZ, 168,000 miles, Code P0402 two weeks ago. I tested the VSV that connected to the EGR valve to be good following your method with a 9V battery. I replaced this VSV any way (from Advance auto parts, new). I deleted codes with code scanner afterwards. But the code P0402 showed up again after 2 miles driving. I then went ahead and replaced the EGR valve (from eBay new) and deleted the code. The code P0402 came back again. Any other suggestions?
Other than what's listed on this page I have no suggestions.. Repair forum thread 1MZ FE with P0401/402 possible causes:www.toyotanation.com/threads/diy-1mz-egr-code-p0401-p0402-diagnostic-repair.357502/
Gotta buy oem parts. Never trust any aftermarket or even eBay Toyota parts unless it’s sold by a known dealership
I found a leaking 3-way vacuum which also connects to the EGR valve, sort of. It’s one of them in a three vacuum switch bank under the engine dust cover. Tested with a nose suction bulb and a 9 volts battery. After replacement of that vacuum switch, the code P0402 is gone.
Very helpful video.where do I buy alligator clips like yours ready to test VSV? MY 99 TOYOTA 4runner has po401 on and egr. has been replaced but light has come back on.
I bought mine at Harbor Freight but any auto parts store should have them.. www.harborfreight.com/36-inch-low-voltage-test-leads-66712.html
@@tongo117 thank you!
I also replaced the vacuum modulator
The vacuum modulator is really expensive.
@@clintonschubert5091 yup. But it had to be done.
That is great, thanks 👍
Can you test the vacuum switching valve on the work bench? And how do you do it?
Anyone knows?
Thank you
You can test the VSV with a fresh 9 volt battery.. www.toyotanation.com/threads/diy-how-to-test-vacuum-switching-valve-at-the-charcoal-canister-diagnose-p0446.1660178/
@@tongo117 Thank you. I will try that on the egr vacuum switching valve.
What if the original Vsv has a really weak click when the power is out to it.
Cheap ebay electronic part vs used OEM??
it's $66 bucks at the shop, it's instant and $2 at the junkyard. ebay would take a week. i know which one i'd pick, but you're too stupid to run the logistics on it I guess.
"I was about to fight them on that but I let it slide" 😆