Topic: P0101 and P2237 codes

[Gentleman Jack]

As most of you know, I have been battling the P0101 code.  I also got a P2237 code this weekend.  From my research it is a code for Evap Purge Solenoid.  I had a talk with Dave and Randy from DDM and they suggested perhaps a bad solenoid.  Has anyone else had this issue?  A slow, stuck or otherwise faulty solenoid would cause the P0101 code as it would blow air back in to the intake pipe when it wasn't expected to do so, causing the MAF to freak out and throw the code.  I am going to research the part number for the solenoid and see what it cost to replace, but wanted to see if anyone else has had this issue.  The car is still under warranty, but I can't get the code to set of with any regularity, so I just as soon fix it if it's not that much money.
EDIT: THIS INFO IS NOT CORRECT!  The code is not for the EVAP Purge Solenoid!  And DDM did not tell me that is the solenoid that needs to be changed for this issue.  The EVAP solenoid is a potential problem but with fuel fill up and over fill situations, not bypass valve / turbo problems.  The solenoid in question here is the TURBO BYPASS SOLENOID and is located very close to the EVAP purge valve.  As soon as I find the correct part numbers I will update the info below.  Sorry for the confusion and thanks all for the help.


Thanks for the input.

GJ

EDIT:

Found the part number: 12608378.  Cost from local dealer is $35.87 plus tx.
this is the part number for the EVAP purge valve solenoid, not the turbo bypass solenoid!

  
EDIT: corrected part number for the bypass solenoid:
Charge air bypass valve solenoid: GM 1263 3411.  $59.95 from local dealer.


EDIT again:
this info is for the EVAP purge valve solenoid
called three local dealers:  
1. called for solstice gxp - $35.87
2. called for Cobalt SS - $32.34
3. unspecified vehicle, just part number - $30.14.

That could just be different pricing for each dealer, but now I'm curious if the same part cost different amounts for different vehicles... (evap purge valve solenoid is same on all LNF turbos as far as my research shows)

GJ

[Critterman]

And I think you are lucky as it is located on the firewall, I believe.

[Gentleman Jack]

And I think you are lucky as it is located on the firewall, I believe.

Critter,
I don't think so.  It is located on the drivers side of the engine, very very easy access.  Unless I am looking at the wrong thing.  that would suck.

GJ

[Critterman]

What do I know I have an LN5, I know on my truck it is on the carbon canister, under the truck and you cannot replace it with out damaging the $380 canister.  And it cost 95 bucks, ask me how I know.

But wait there is more.  Knock sensor is 180 + 1100 in labor.  Got to love Nissan trucks.  2K for this repair, but it is the first in 7 years, so I really can't complain.

[spoolin]

Wonder why the price difference. When mine went bad it didn't throw any codes but caused some part throttle stumbling and missing. Enough sometimes to put it into limp mode with no CEL.

Easy to replace too. Just one bolt and hose connection. It's right in the middle of the intake manifold on top.

[Dave@DDMworks]

What do I know I have an LN5, I know on my truck it is on the carbon canister, under the truck and you cannot replace it with out damaging the $380 canister.  And it cost 95 bucks, ask me how I know.

But wait there is more.  Knock sensor is 180 + 1100 in labor.  Got to love Nissan trucks.  2K for this repair, but it is the first in 7 years, so I really can't complain.

actually critter you have an LE5

As for the evap solenoid it is on the intake manifold on the LNF engines, a single bolt, single electrical connector and single plastic line and off it comes! Pretty simple to do.

We have seen these go bad and just replaced one last week.

Hope that helps,
Dave

[kennysabarese]

I replaced my evap solenoid when my car wouldn't start after filling the gas tank on a really hot day. was about 32 bucks. 5 minute install

[Critterman]

Dave you sure mine isn't a LN5?  N=nicer!

[Arabas]

GJ, i disagree.
i know that 30 bucks is not a lot of money, but i believe you should take it to the dealer and have them replaced your evap purge solenoid under warranty.
why sepnd money on something that they should replace?
and one more thing: you will have it done by them, they will keep it in record, so IF something else happens to the engine (knock on wood) they will not be able to accuse you of messing with any part.

just my 30 dollars...

[Gentleman Jack]

GJ, i disagree.
i know that 30 bucks is not a lot of money, but i believe you should take it to the dealer and have them replaced your evap purge solenoid under warranty.
why sepnd money on something that they should replace?
and one more thing: you will have it done by them, they will keep it in record, so IF something else happens to the engine (knock on wood) they will not be able to accuse you of messing with any part.

just my 30 dollars...

Arabas,

great point.  The problem is the same as what BSS is dealing with.   I can't get it to do it on command and I don't want them out beating on the car to try to get the CEL to pop.  But your point is well taken.  Something to chew on.

GJ

[HAMMER DOWN]

Arabas,

great point.  The problem is the same as what BSS is dealing with.   I can't get it to do it on command and I don't want them out beating on the car to try to get the CEL to pop.  But your point is well taken.  Something to chew on.

GJ

GJ,

You keep driving it. Then when the Codes come back. Read it, to see if they the one's you been have trouble with. DO NOT clear them. Make appt. at the dealer to have them fix it. That will save "some" of the dealer beating on your car.


I did this with my G\F's 05 WRX. I don't remember the code. It was a misfire #2 coil. I read the code, cleared it. Called them, they said, If it returns, don't clear it. Because if we can't reproduces the code. We can't do nothing to fix it under warranty.  Two weeks later the code return. I read the code to see if the same one, it was. Took to dealer & got the #2 coil pack replace under warranty. Just an idea.

Mike

[Gentleman Jack]

could you show me what the evap purge solenoid looks like?

Will do, but from you other post, looks like your 5K gurgle is gone.  I will be working on the car Monday or Tuesday depending on work, so I will get some photos.  The solenoid is super simple to change out.  One bolt, one electical connector and I think 3 vac lines.  More to follow.

HammerDown- that's actually a great idea.  I am going to do that next time.  I already got the part for this fix... but I will do that next time!  Thanks for the idea.

GJ

[Gentleman Jack]

EDIT: THIS INFO IS NOT CORRECT!  The code is not for the EVAP Purge Solenoid!  And DDM did not tell me that is the solenoid that needs to be changed for this issue.  The EVAP solenoid is a potential problem but with fuel fill up and over fill situations, not bypass valve / turbo problems.  The solenoid in question here is the TURBO BYPASS SOLENOID and is located very close to the EVAP purge valve.  As soon as I find the correct part numbers I will update the info below.  Sorry for the confusion and thanks all for the help.

More info :

P2237 means the pumping circuit for HO2S #1 is open, has high resistance or it has a short to B+. Check the White and light Green wires between sensor and ECM. Connections or under hood wiring oops could be at fault or maybe even the sensor.

[Dave@DDMworks]

EDIT: THIS INFO IS NOT CORRECT!  The code is not for the EVAP Purge Solenoid!  And DDM did not tell me that is the solenoid that needs to be changed for this issue.  The EVAP solenoid is a potential problem but with fuel fill up and over fill situations, not bypass valve / turbo problems.  The solenoid in question here is the TURBO BYPASS SOLENOID and is located very close to the EVAP purge valve.  As soon as I find the correct part numbers I will update the info below.  Sorry for the confusion and thanks all for the help.

More info :

The P0101 code is for MAF sensor performance. Do you have any way of datalogging anything off your car?

The P2237 is the O2 sensor heating circuit malfunction, possibly bad O2 sensor, don't really think they are related.

Dave

[smartin]

I think I've had the P2237 code on and off for a long time. I've never done anything about it. On mine, it has something to do with using good gas and the gas cap. Even though, Randy looked at SMMM7 and said the gas cap was fine.

[SHiNY]

The P0101 code is for MAF sensor performance. Do you have any way of datalogging anything off your car?

I had this code on my car. The dealership changed the MAF sensor, the second one was bad so they switched that one too. Haven't had a problem since.

[Gentleman Jack]

The P0101 code is for MAF sensor performance. Do you have any way of datalogging anything off your car?

The P2237 is the O2 sensor heating circuit malfunction, possibly bad O2 sensor, don't really think they are related.

Dave

Dave et al,

The P0101 code has been a masterful gremlin sent to me from Romania.  I have changed out the MAF (Thanks TAZZ!) with no change, I have stretched the bypass valve spring (Thanks Randy DDM) with some success, but now it is as bad as ever.  Perhaps the spring has reverted back to original.  I just ordered a Dejon replacement spring, so we will see how that goes.  I replaced the EVAP purge valve solenoid (by accident, thinking it was the turbo bypass valve solenoid) which may very well take care of the P2237 code (a good mistake I guess).  I am going to order the turbo bypass valve solenoid (none in California, local dealer says 5-7 days, $60.00) and see if that corrects the issue.

No, at this time I do not have any way to data log.  I know, I know, shame on me.  I'm keeping my eyes open for an opportunity.  I am leaning towards the turbo bypass valve solenoid after talking with DDM Dave / Randy and describing the situation and code P2261 (? if memory serves) which is the code for the bypass valve malfunction.  I have taken the valve itself apart (when I stretched the spring) and all looked perfect. 

So no one has to reread prior threads here is the situation:

start car, drive down road - car will occasionally bog on light throttle, but only one of every 20 or 30 times I start it, and always cold.  Engine stutters but catches, only light throttle application.  More often: get to freeway, accelerate on to freeway (heavy boost as a result of heavy foot 23+ psi, my display only goes up to 23psi) let off throttle once I reach freeway speeds.  Engine "coughs" and the car feels like a big gust of wind hits the front or a semi trailer drove past in the other direction.  Not a big bog, just a hiccup.  This is my indication that something happened.  If I do this two or three times, the check engine light will come one.  When it happens, I go into limp mode lite - can only boost to 4 or 5 psi.  However, if I lift off the throttle all the way and then go back on the gas, I have full power again.

The theory:  the solenoid for the charge air bypass valve (as GM calls it) is malfunctioning, not closing the valve all the way or the spring is not strong enough to fully seal the valve.  This causes the air from the turbo to be dumped back in to the intake tube, after the MAF prior to the turbo, with enough of a variance to piss off the MAF and cause it to freak out and give the P0101 code, cutting power to protect the engine.  Self preservation to prevent engine failure. 

The Fix:  Well, still working on that part.  As I said, I have ordered a Dejon spring which has a higher spring rate than the stock one, so we will see if that works.  If it doesn't, I will be ordering the charge air bypass valve solenoid from the dealer (or ???) and installing that to see if that takes care of the problem. The correct part number for the part:

Charge air bypass valve solenoid: GM 1263 3411.  $59.95 from local dealer.

Sorry for the long post, I wanted to make sure all the corrected info was on here so not to screw up anybody searching out this stuff.

GJ

[SHiNY]

Maybe you should have a professional look at your car, get it fixed, and stop futzing with it!!! 

[Critterman]

Dang ShiNY don't hold back tell how you really feel. 

[Arabas]

hope u fix it soon GJ.
if the new part u are getting doesn t fix it, follow Shiny's advice...
glad that you never loose your sense of humor, no matter what gremlins Kelu sends you over there..

[SHiNY]

Dang ShiNY don't hold back tell how you really feel. 

Just like patience - diplomacy is another of my not so strong qualities 


GJ knows I was just busting his chops!

[Sol Asylum]

GJ knows I was just busting his chops!

Are you sure?  Even here in Central Illinois I could hear him crying all the way out there in San Diego, "my car doesn't work and Shiny doesn't think I can fix it on my own."

Don't worry GJ keep replacing components, eventually you will get the right one, I think it might have something to do with the Fetzer valve.

[Gentleman Jack]

Are you sure?  Even here in Central Illinois I could hear him crying all the way out there in San Diego, "my car doesn't work and Shiny doesn't think I can fix it on my own."

Don't worry GJ keep replacing components, eventually you will get the right one, I think it might have something to do with the Fetzer valve.

Yeah, it's kind of fun.  Take one part out, replace it with another one, see if it helps... it's like Twister.  You just never know what's going to work in your favor.  "right hand green"

hope u fix it soon GJ.
if the new part u are getting doesn t fix it, follow Shiny's advice...
glad that you never loose your sense of humor, no matter what gremlins Kelu sends you over there..

Arabas,
I have never lost my sense of humor.  I will be laughing at my funeral.  It's just the way I see it.

Just like patience - diplomacy is another of my not so strong qualities 


GJ knows I was just busting his chops!

yes, yes you did.  and might I say DAMN my chops felt good afterwards....

GJ

[MGar]

I'm guessing you have quickly just checked the ground connections, as I know a bad ground can cause all sorts of weird issues.

[Kelu]

Buddy, I feel so bad, I have some parts from the wrecked Opel GT which might help you out with replacement (turbo bypass solenoid, maf, etc) and if I was closer I would be more than happy to donate for a good cause.

All I do hope is that you will not switch parts until you realize you transformed your LNF in a LSx engine