Hi,
I have just joined suby club. I have just recently purchased a Subaru Liberty B4. Had it on the dyno yesterday at maximum motorsports in Kendall. It pull some good readings. Now on the dyno the car ran fine with no CEL faults coming up. On the road test it came up with a CEL whenever I build revs in 3rd, 4th or 5th gear meaning that I start revving at 2000 and at around 4000 it stops boosting and I get the CEL. I also get secondary turbo boost cut. The code reader read fault code;
p1241 2 stage twin turbo system (single)
P1199 Differental pressure sensor
This doesn't happen in any of the other gears. And if I boos all the way through 1st 2nd 3rd and 4th it does not happen, only building the revs up so when the cars loaded up.
Like you have said previously in another comment talking about BBOD. Where is this? It could be as simple as a vac hose or Soleniod dis function?
Can you or anyone help me?
Cheers, Brad
B4 twin turbo fault codes; P1241 and P1199
Started by Brad-B4 Liberty, Sep 08 2016 11:40 AM
2001 Subaru liberty B4
11 replies to this topic
#2
LukeFranky
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Posted 08 September 2016 - 01:30 PM
Got a boost gauge? What reading do you get from the primary turbo?
The B4 Bomber - 2002 MY03 Subaru Liberty B4, ADM, Manual, EJ208.
#3
Bumpty
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Posted 08 September 2016 - 02:01 PM
Which
#4
El_Freddo
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Posted 08 September 2016 - 08:23 PM
Bumpty... Play nice mate and use your punctuation. You left the question mark off the back of "thread".
I've seen a few post asking the same question now.
The info is out there, if it doesn't come up in the search function someone will share where to find it in good time
All the best with it. I don't have a set of twins but I've heard they're awesome while they're working properly and a pita when they're not!
Cheers
Bennie
I've seen a few post asking the same question now.
The info is out there, if it doesn't come up in the search function someone will share where to find it in good time
All the best with it. I don't have a set of twins but I've heard they're awesome while they're working properly and a pita when they're not!
Cheers
Bennie
"The lounge room is not a workshop..."
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#5
duncanm
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Posted 08 September 2016 - 08:37 PM
Can't answer specifics -- but looks like a primary overboost issue..
#6
Brad-B4 Liberty
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Posted 28 September 2016 - 10:37 PM
It's weird what's happening. When the car is loaded up(ie; low revs in 3rd, 4th and 5th, it flutters or hunts between 0 psi and 5 psi until it starts to reach change over.
You can also start to hear lose of boost noise or it sounds like there air leaking past a diaphragm coming from the drivers side under the bonnet.
Any one help me out here or has anyone had that or heard of these problems before??
You can also start to hear lose of boost noise or it sounds like there air leaking past a diaphragm coming from the drivers side under the bonnet.
Any one help me out here or has anyone had that or heard of these problems before??
#7
duncanm
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Posted 28 September 2016 - 10:52 PM
You can also start to hear lose of boost noise or it sounds like there air leaking past a diaphragm coming from the drivers side under the bonnet.
well -- I'd be looking for a boost leak, then. Trust what you're observing.
Do you get big puffs of black smoke when this is happening? Definitely boost leak if that's the case.
#8
Guest_KONG_*
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Posted 29 September 2016 - 09:45 AM
Secondary turbo to intercooler pipe.
Loose, cracked or stuffed.
Loose, cracked or stuffed.
#9
Brad-B4 Liberty
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Posted 01 October 2016 - 11:00 PM
Yeah I do get black smoke puffs. Also have carbon black marks on my rear bumper exhaust side to prove it. Ok I'll check the system.
Could it have something to do with the ECV actuator at all? Can I loose boost due to that needing adjustment or would that not cause it?
Could it have something to do with the ECV actuator at all? Can I loose boost due to that needing adjustment or would that not cause it?
#10
Guest_KONG_*
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Posted 03 October 2016 - 09:48 AM
Hi Brad, I replied to your comment in Peekay's thread.
I wouldn't play with the ECV just yet. You mentioned you can hear a boost leak noise on the driver side, you need to find where it's leaking as a priority.
IC pipes, Vac lines, SPRV, BBOD, ECV .... in that order.
If the boost leak noise only happens in 3rd it may mean it's only leaking under peak power so it may be difficult to find as it may not be that noticeable.
I wouldn't play with the ECV just yet. You mentioned you can hear a boost leak noise on the driver side, you need to find where it's leaking as a priority.
IC pipes, Vac lines, SPRV, BBOD, ECV .... in that order.
If the boost leak noise only happens in 3rd it may mean it's only leaking under peak power so it may be difficult to find as it may not be that noticeable.
#11
Guest_KONG_*
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Posted 03 October 2016 - 09:54 AM
Keep in mind also that the DPS code could be a result or symptom of the problem, not necessarily the cause.
#12
Arfreedom
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Posted 03 October 2016 - 12:05 PM
You see that code P1241. That's a night mare. Was looking for it to share with you but that code has about 15 possible reason to solve it. I freak out when I saw it. When I got to number 5. Whoala.
It's leads to a solenoid in the bbod. However I'm still trying to figure out which one and there are about 5 of them in that box. I change out one. The big one in the middle but it didn't work and I end up switching the entire box and got boost.
This is my story with that code.
Sent from my iPhone using Tapatalk
It's leads to a solenoid in the bbod. However I'm still trying to figure out which one and there are about 5 of them in that box. I change out one. The big one in the middle but it didn't work and I end up switching the entire box and got boost.
This is my story with that code.
Sent from my iPhone using Tapatalk
Also tagged with one or more of these keywords: 2001 Subaru liberty B4
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B4 twin turbo fault codes; P1241 and P1199Started by Brad-B4 Liberty, 08 Sep 2016  2001 Subaru liberty B4
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01 Subaru Liberty B4 MY03 Repair ManualStarted by Liberated, 04 Jun 2013 Repair Manual and 1 more...
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