SB9T Fault 4 Code P1844 - SB9T.com
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Old 03-12-2012, 05:35 PM   #1 (permalink)
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Default SB9T Fault 4 Code P1844

I took my tribeca to the shop with the engine light, cruise control and slip lights on. It was burning oil. Had a bad sensor and they said it had a bad valve, it was bad metal. The other valves were at factory specs. Got it home and now less than 4 weeks later, the lights come back on and the dealer says its a Fault 4 Code P1844 which means "valve body cylinoid (sp?) not functioning. The dealer says I can use a valve body kit at $2K, but he wouldn't recommend. Said the transmission fluid was dirt black and dirty. I had serviced at 70K, he stated the tran fluid needs changed every 30K. Any body have any comments? They say I should buy a new or rebuild engine at $5K.
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Old 03-13-2012, 02:34 PM   #2 (permalink)
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That is a bummer!

The 2007 manual says 'I' - Inspect every 30k miles with a note that under severe condition it is 15k miles.

It looks like a typo, it should be replace. This is very very strange.

I plan to replace it every 30k miles.
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Old 03-13-2012, 02:53 PM   #3 (permalink)
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This is what I get for that error code...

P1844 - AT oil pressure switch 5
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Old 03-13-2012, 04:32 PM   #4 (permalink)
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I do not know what the code means. You can google the service manual and look it up there.

The other option is to talk to another dealer for a 2nd opinion or accept and pay the full bill.

I am sorry that I can't be more helpful.
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Old 03-13-2012, 04:33 PM   #5 (permalink)
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Or you can may be trade it in.
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Old 11-10-2013, 06:02 AM   #6 (permalink)
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Default code P1844 and PO 700 plus traction slip AT

I have these codes. car drives fine. AT fluid is fine and not discolored

I am looking the net and it doesn't sound good,

sounds like " tranny needs replaced'

anyone able to get a repair??
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all
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Old 11-10-2013, 08:06 AM   #7 (permalink)
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According to the book, the problem is either with wiring or with the valve body. Unfortunately, solenoids and pressure sensors are not available separately from the valve body assembly, but the repair itself is not too hard on DIY scale.
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Old 11-13-2013, 06:46 PM   #8 (permalink)
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took the car to a private mechanic, on the way over the codes went off.

fortunately the car drives fine and seems to shift fine.

mechanic told me that the parts to repair this tranny if needed, are not available.

if you try to swap in a " salvage yard tranny" you will still need a dealer to program the computer that runs the tranny. dealer may not co operate on troubleshooting, since you went as a work around.

mechanic told me to drive it and be aware of shifting troubles, which would signal a tranny failure and it way go into a default mode, where only 1 gear will work enough to get you home.

he said this 5 speed tranny on the tribeca and( legacy) is a high tech thing that only dealer is equipped to handle...way more complex the 4 speed on the outbacks



HTH
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all

Last edited by tribecadean; 11-13-2013 at 06:50 PM. Reason: missing word
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Old 11-14-2013, 10:21 AM   #9 (permalink)
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Tranmission is the same as in the Legacy gt, outback XT, and all H6. They are common and usually very robust. Unfortunately not for you. Clear your guy doesn't want to touch it.

"The troubleshooting procedure in the service manual is to check the connectors and wiring (continuity or shorts) from the TCM to the tranny connector, from the tranny connector to the control valve body (CVB) itself, and finally replace the CVB. "


Here is a similar issue: http://www.subaruoutback.org/forums/...-problems.html
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Old 11-14-2013, 12:38 PM   #10 (permalink)
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Sounds like something your going to have to take to the dealer for repair. Ya it'll cost more, but it'll be guaranteed and you have a reputable place you fall back on if problems arise.
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Old 02-03-2015, 03:23 PM   #11 (permalink)
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Default code P1844 and PO 700 plus traction slip AT

Quote:
Originally Posted by tribecadean View Post
I have these codes. car drives fine. AT fluid is fine and not discolored

I am looking the net and it doesn't sound good,

sounds like " tranny needs replaced'

anyone able to get a repair??
codes went away (11-13) after reset and now they are back 2-15 again after a 14 months

when codes pop up...the cruise control quits working. the codes happened during a 100 mile 75 mph cruise on highway.

I unhooked the battery to reset and car is driving fine.
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all
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Old 02-03-2015, 08:24 PM   #12 (permalink)
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Cruise control is not directly related. The ECU simply disables it for certain codes.

Swap the valve body with a used one and you will be all set. No 'reprogramming' needed. Maybe you can find a independent comfortable with doing this. It's also not terrible difficult to do yourself.

Or since it is so intermittent continue to monitor.
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Old 02-09-2015, 10:46 AM   #13 (permalink)
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Default valve body

where do find a used valve body?

will someone take one out of a used tranny or do you have to buy a used tranny?

I got the dash lights to go off( the antislip light,engine check light,etc) by unhooking battery, the code scanner would not turn off lights.


anyway, I have been driving it and it seems fine again...

do you think its ok to keep driving if its working fine?
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all
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Old 02-09-2015, 10:50 AM   #14 (permalink)
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Default thank you

I also wanted to say thank you
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all
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Old 08-02-2015, 01:41 PM   #15 (permalink)
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Default transmission codes off again at 146K

p1844
p0700
took it too shop on sunday with the engine light, cruise control and slip lights on


last night it didnt want to drive faster than 65 mph with bucking or shudder

later it was shifting weird at low speed

I will see what the tranny shop says..i may ask them if they will swap in a JDM used engine- they are on ebay for 1000 bucks shipped to door.
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all
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Old 08-02-2015, 08:26 PM   #16 (permalink)
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check trans pan - it's not dented or damaged? pans can push up into wiring harnesses/solenoids.

i repaired an H6 trans last year though an earlier 4EAT - pan pushed up and crushed 2 solenoids, completely disconnecting the connectors, a third was questionable so i replaced it as well. replaced 3 solenoids with used ones i had on hand - free repair minus the sealant for the pan.

unlikely in your case - but I'd at least take a look at the pan.
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Old 08-09-2015, 08:14 PM   #17 (permalink)
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Default tips for transmission install

codes came back, had some intermittent shift problems.

-dealer said 4.7 k to replace-

I am going to throw the dice and go with a salvage tranny,

I need tips as a friend is going to put it in for me.
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all
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Old 08-10-2015, 07:01 AM   #18 (permalink)
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make sure the torque converter is fully seated when installing a used transmission.

flex plate should not touch the torque converter when installed - the torque converter bolts draw the two together when tightened. So with some measuring between torque converter mounting surface and bellhousing and flexplate and engine bellhousing you can assess before installing if they're going to touch. if they do - you'll crack the oil pump when installing it.

lift and support the engine and tilt it back a little so the transmission has room to pull backwards and drop out.

if you have an engine lift you can snake chains through the engine compartment to help support the weight of the transmission when pulling/installing if that's helpful.

otherwise - pull trans, install new trans. remove exhaust, front axles, driveshaft, ATF hoses, disconnect electrical connector and shifter liknage and it comes out. it's simpler than an engine pull....just super annoying working under the vehicle.

replace torque converter seal, rear output shaft seal, ATF, and front diff gear oil before installing it.

engine and transmissino can be pulled together as one huge lump, i've done it multiple times but i wouldn't do it for a trans swap.

might call some local transmissino shops and just ask how much it is to install a transmission you supply. good to know your options just in case, only takes a couple phone calls.
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Old 08-11-2015, 04:45 PM   #19 (permalink)
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Why are you replacing the whole transmission and not just the valve body? Seems code is due to valve body issues.
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Old 08-13-2015, 08:17 PM   #20 (permalink)
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Quote:
Originally Posted by tdelker View Post
Why are you replacing the whole transmission and not just the valve body? Seems code is due to valve body issues.
I don't know. just assumed the whole thing was worn out.

you have a good point
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2006 tribeca- had a JDM swap at 215k,now at 223K
2002 legacy gt wagon at 152k
2000 outback wagon-198k-head gasket again-gone
Did full 60,000 service, ipod addition, rubber sway bar bushings, generic sepentine pulleys,Lexus 460x silicone wipers,thermoquietpads,tranny filter thru bumper cover. Thank you all
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