Dealing with a P2074 code
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Lead Driver
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Dealing with a P2074 code
Apparently a bad or dirty MAP sensor or blocked manifold port.
Going to pull the sensor tomorrow to clean it and the possibly clogged opening in the manifold, see if that gets rid of the code.
It just popped up a little while ago, wasn't an issue over the weekend while on my job trip.
Ordered a spare just in case.
Going to pull the sensor tomorrow to clean it and the possibly clogged opening in the manifold, see if that gets rid of the code.
It just popped up a little while ago, wasn't an issue over the weekend while on my job trip.
Ordered a spare just in case.
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Lead Driver
Joined: Nov 2005
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So...another story of a manufacturer making something more difficult than it needs to be.
Went to pull the MAP sensor, and some brilliant snot engineer thought the sensor needed to be a magnitude more difficult to remove than just the one bolt holding the sensor to the manifold, so to that end they added a little metal plate over the top of the sensor, held down by two more bolts, the back one being up under the cowl where you can't easily get to it with a ratchet. So, had to hunt up a 5/16 wrench to get the back bolt out. And, of course, the bolt holding the sensor down is a different size than the bolts on the metal plate, so a few extra tools to get it all apart...
Anyway, get it all apart and the sensor was a little dirty, but not covered over, and the hole in the manifold wasn't clogged up like the one in the video I watched. So, cleaned the sensor and reinstalled it (funny, that little metal plate that was over it, has crawled up in my toolbox, its new happy home...).
I decided the sensor must not have been the issue, so further investigation was in order.
So, next on my list was the air filter and MAF sensor, so went ahead and started taking the cover off the air filter and pulled the boot off the intake tube, and pulled the cover out. The MAF and insides of the air filter cover housing were completely clean, so pulled the air filter out and found the heart of the issue...
I have a K&N filter, and over that I have a pre-filter mesh cover, keeping the larger dirt and junk out of the filter itself.
The issue turns out that the pre-filter was doing its job very well and was completely covered in dirt and some small debris, so very little air was getting through.
The K&N filter was still very clean, so just pulled the pre-filter off and took it inside to the sink and washed it out, then took it back out and blew it dry with my air hose, reinstalled it and put the filter housing all back together.
Fired the truck up and all was well again, CEL was out, no P2074 code anymore.
Drove around the neighborhood, drove just fine, no codes.
So, I ended up with basically a non real issue, just have to do better on keeping up with that pre-filter cleaning.
Apparently the built-in air filter monitor that said the filter was fine, isn't worth spit!
Went to pull the MAP sensor, and some brilliant snot engineer thought the sensor needed to be a magnitude more difficult to remove than just the one bolt holding the sensor to the manifold, so to that end they added a little metal plate over the top of the sensor, held down by two more bolts, the back one being up under the cowl where you can't easily get to it with a ratchet. So, had to hunt up a 5/16 wrench to get the back bolt out. And, of course, the bolt holding the sensor down is a different size than the bolts on the metal plate, so a few extra tools to get it all apart...
Anyway, get it all apart and the sensor was a little dirty, but not covered over, and the hole in the manifold wasn't clogged up like the one in the video I watched. So, cleaned the sensor and reinstalled it (funny, that little metal plate that was over it, has crawled up in my toolbox, its new happy home...).
I decided the sensor must not have been the issue, so further investigation was in order.
So, next on my list was the air filter and MAF sensor, so went ahead and started taking the cover off the air filter and pulled the boot off the intake tube, and pulled the cover out. The MAF and insides of the air filter cover housing were completely clean, so pulled the air filter out and found the heart of the issue...
I have a K&N filter, and over that I have a pre-filter mesh cover, keeping the larger dirt and junk out of the filter itself.
The issue turns out that the pre-filter was doing its job very well and was completely covered in dirt and some small debris, so very little air was getting through.
The K&N filter was still very clean, so just pulled the pre-filter off and took it inside to the sink and washed it out, then took it back out and blew it dry with my air hose, reinstalled it and put the filter housing all back together.
Fired the truck up and all was well again, CEL was out, no P2074 code anymore.
Drove around the neighborhood, drove just fine, no codes.
So, I ended up with basically a non real issue, just have to do better on keeping up with that pre-filter cleaning.
Apparently the built-in air filter monitor that said the filter was fine, isn't worth spit!
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Lead Driver
Joined: Nov 2005
Posts: 8,474
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Yeah, thought sure I had a can, but couldn't find it, ended up using a little shot of PB blaster.
Logistics Pro
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So...another story of a manufacturer making something more difficult than it needs to be.
Went to pull the MAP sensor, and some brilliant snot engineer thought the sensor needed to be a magnitude more difficult to remove than just the one bolt holding the sensor to the manifold, so to that end they added a little metal plate over the top of the sensor, held down by two more bolts, the back one being up under the cowl where you can't easily get to it with a ratchet. So, had to hunt up a 5/16 wrench to get the back bolt out. And, of course, the bolt holding the sensor down is a different size than the bolts on the metal plate, so a few extra tools to get it all apart...
Anyway, get it all apart and the sensor was a little dirty, but not covered over, and the hole in the manifold wasn't clogged up like the one in the video I watched. So, cleaned the sensor and reinstalled it (funny, that little metal plate that was over it, has crawled up in my toolbox, its new happy home...).
I decided the sensor must not have been the issue, so further investigation was in order.
So, next on my list was the air filter and MAF sensor, so went ahead and started taking the cover off the air filter and pulled the boot off the intake tube, and pulled the cover out. The MAF and insides of the air filter cover housing were completely clean, so pulled the air filter out and found the heart of the issue...
I have a K&N filter, and over that I have a pre-filter mesh cover, keeping the larger dirt and junk out of the filter itself.
The issue turns out that the pre-filter was doing its job very well and was completely covered in dirt and some small debris, so very little air was getting through.
The K&N filter was still very clean, so just pulled the pre-filter off and took it inside to the sink and washed it out, then took it back out and blew it dry with my air hose, reinstalled it and put the filter housing all back together.
Fired the truck up and all was well again, CEL was out, no P2074 code anymore.
Drove around the neighborhood, drove just fine, no codes.
So, I ended up with basically a non real issue, just have to do better on keeping up with that pre-filter cleaning.
Apparently the built-in air filter monitor that said the filter was fine, isn't worth spit!
Went to pull the MAP sensor, and some brilliant snot engineer thought the sensor needed to be a magnitude more difficult to remove than just the one bolt holding the sensor to the manifold, so to that end they added a little metal plate over the top of the sensor, held down by two more bolts, the back one being up under the cowl where you can't easily get to it with a ratchet. So, had to hunt up a 5/16 wrench to get the back bolt out. And, of course, the bolt holding the sensor down is a different size than the bolts on the metal plate, so a few extra tools to get it all apart...
Anyway, get it all apart and the sensor was a little dirty, but not covered over, and the hole in the manifold wasn't clogged up like the one in the video I watched. So, cleaned the sensor and reinstalled it (funny, that little metal plate that was over it, has crawled up in my toolbox, its new happy home...).
I decided the sensor must not have been the issue, so further investigation was in order.
So, next on my list was the air filter and MAF sensor, so went ahead and started taking the cover off the air filter and pulled the boot off the intake tube, and pulled the cover out. The MAF and insides of the air filter cover housing were completely clean, so pulled the air filter out and found the heart of the issue...
I have a K&N filter, and over that I have a pre-filter mesh cover, keeping the larger dirt and junk out of the filter itself.
The issue turns out that the pre-filter was doing its job very well and was completely covered in dirt and some small debris, so very little air was getting through.
The K&N filter was still very clean, so just pulled the pre-filter off and took it inside to the sink and washed it out, then took it back out and blew it dry with my air hose, reinstalled it and put the filter housing all back together.
Fired the truck up and all was well again, CEL was out, no P2074 code anymore.
Drove around the neighborhood, drove just fine, no codes.
So, I ended up with basically a non real issue, just have to do better on keeping up with that pre-filter cleaning.
Apparently the built-in air filter monitor that said the filter was fine, isn't worth spit!
I haven't bothered with a K&N in a long time, but the last time I had one I always kept them barely oiled - just enough to turn them pink. I always used the aerosol cans of oil to apply it, never from the bottle. Never had a MAF sensor issue with one.
In fact, the only time I had a MAF issue was on a bone-stock car, and the annoying part was it had those 'security' torx bits holding it in. I didn't have the bit kit I do now, so I dremeled out the 'security' part and used a regular one.
Thread Starter
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Lead Driver
Joined: Nov 2005
Posts: 8,474
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It's the simple things that'll get you. Glad it was relatively easy.
I haven't bothered with a K&N in a long time, but the last time I had one I always kept them barely oiled - just enough to turn them pink. I always used the aerosol cans of oil to apply it, never from the bottle. Never had a MAF sensor issue with one.
In fact, the only time I had a MAF issue was on a bone-stock car, and the annoying part was it had those 'security' torx bits holding it in. I didn't have the bit kit I do now, so I dremeled out the 'security' part and used a regular one.
I haven't bothered with a K&N in a long time, but the last time I had one I always kept them barely oiled - just enough to turn them pink. I always used the aerosol cans of oil to apply it, never from the bottle. Never had a MAF sensor issue with one.
In fact, the only time I had a MAF issue was on a bone-stock car, and the annoying part was it had those 'security' torx bits holding it in. I didn't have the bit kit I do now, so I dremeled out the 'security' part and used a regular one.
They seem to want the filter to have that DEEP RED COLOR, so deep it is dripping off the filter.
Heck, on mine with the great pre-filter, I may not ever have to clean the and re-oil the actual filter, it'll last forever on the factory oil!
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Lead Driver
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Only other booger now is that Rock Auto will be delivering a new MAP sensor to me on Thursday, and will not need it...
Guess I'll stick it in the glovebox and forget that it is there some day when I really do need one...
Guess I'll stick it in the glovebox and forget that it is there some day when I really do need one...
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From: North Carolina
So...another story of a manufacturer making something more difficult than it needs to be.
Went to pull the MAP sensor, and some brilliant snot engineer thought the sensor needed to be a magnitude more difficult to remove than just the one bolt holding the sensor to the manifold, so to that end they added a little metal plate over the top of the sensor, held down by two more bolts, the back one being up under the cowl where you can't easily get to it with a ratchet. So, had to hunt up a 5/16 wrench to get the back bolt out. And, of course, the bolt holding the sensor down is a different size than the bolts on the metal plate, so a few extra tools to get it all apart...
Anyway, get it all apart and the sensor was a little dirty, but not covered over, and the hole in the manifold wasn't clogged up like the one in the video I watched. So, cleaned the sensor and reinstalled it (funny, that little metal plate that was over it, has crawled up in my toolbox, its new happy home...).
I decided the sensor must not have been the issue, so further investigation was in order.
So, next on my list was the air filter and MAF sensor, so went ahead and started taking the cover off the air filter and pulled the boot off the intake tube, and pulled the cover out. The MAF and insides of the air filter cover housing were completely clean, so pulled the air filter out and found the heart of the issue...
I have a K&N filter, and over that I have a pre-filter mesh cover, keeping the larger dirt and junk out of the filter itself.
The issue turns out that the pre-filter was doing its job very well and was completely covered in dirt and some small debris, so very little air was getting through.
The K&N filter was still very clean, so just pulled the pre-filter off and took it inside to the sink and washed it out, then took it back out and blew it dry with my air hose, reinstalled it and put the filter housing all back together.
Fired the truck up and all was well again, CEL was out, no P2074 code anymore.
Drove around the neighborhood, drove just fine, no codes.
So, I ended up with basically a non real issue, just have to do better on keeping up with that pre-filter cleaning.
Apparently the built-in air filter monitor that said the filter was fine, isn't worth spit!
Went to pull the MAP sensor, and some brilliant snot engineer thought the sensor needed to be a magnitude more difficult to remove than just the one bolt holding the sensor to the manifold, so to that end they added a little metal plate over the top of the sensor, held down by two more bolts, the back one being up under the cowl where you can't easily get to it with a ratchet. So, had to hunt up a 5/16 wrench to get the back bolt out. And, of course, the bolt holding the sensor down is a different size than the bolts on the metal plate, so a few extra tools to get it all apart...
Anyway, get it all apart and the sensor was a little dirty, but not covered over, and the hole in the manifold wasn't clogged up like the one in the video I watched. So, cleaned the sensor and reinstalled it (funny, that little metal plate that was over it, has crawled up in my toolbox, its new happy home...).
I decided the sensor must not have been the issue, so further investigation was in order.
So, next on my list was the air filter and MAF sensor, so went ahead and started taking the cover off the air filter and pulled the boot off the intake tube, and pulled the cover out. The MAF and insides of the air filter cover housing were completely clean, so pulled the air filter out and found the heart of the issue...
I have a K&N filter, and over that I have a pre-filter mesh cover, keeping the larger dirt and junk out of the filter itself.
The issue turns out that the pre-filter was doing its job very well and was completely covered in dirt and some small debris, so very little air was getting through.
The K&N filter was still very clean, so just pulled the pre-filter off and took it inside to the sink and washed it out, then took it back out and blew it dry with my air hose, reinstalled it and put the filter housing all back together.
Fired the truck up and all was well again, CEL was out, no P2074 code anymore.
Drove around the neighborhood, drove just fine, no codes.
So, I ended up with basically a non real issue, just have to do better on keeping up with that pre-filter cleaning.
Apparently the built-in air filter monitor that said the filter was fine, isn't worth spit!
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