Currently experiencing same issue. I was activating my cruise control one day, when it just failed and “lighting up like a Christmas tree” all at once. Now upon start: -ABS light -Cruise Control deactivated -Check Engine: Emission Control System needs to be checked When driving 2 more pop on: -At Oil Temp light flashes -Hill Start Assist system needs to be checked Checked codes: P0700: Transmission Control System & P2764: Permanent - Torque Converter Clutch Pressure Control Solenoid Control Circuit Low I checked brake light switch recall on website, it said it was already done. Tomorrow I’m going to change fuse #33 in the passenger fuse box. But I’m pretty sure it’s just a solenoid fix.

 

Yes, it does sound like the “bad solenoid in the valve body” problem that is relatively common in the first gen XV’s. A valve body replacement OR repair of same along with a fluid replacement should fix the problem.

 

I was driving on the freeway the AT oil temp light flashing, ABS, VDC, Hill Assist lights are on. The Wentworth Subaru Service in Portland Oregon took care the problem for me. They are very nice and professional. John Saylese is very nice and very helpful. thank you.

What was the problem though, and how expensive was the fix?

 

Highly recommend going to a subaru dealership for this issue: AT Oil Temp, traction light, ABS, and hill assist lights lit up on the way home from work on my Subaru 2015 Crosstrek XV got the code P0971 Transfer solenoid circuit (high) and AT abnormal. Driving didn’t feel odd but got it checked quickly. Subaru quoted me $1,699 for CVT Value Body replacement and I inquired about the extended powertain warranty up to 100k on a few models, service advisor double checked this and found warrant coverage for me since I was at 93K. I thank my lucky stars and all due to these forums

 

Here is the document from Subaru

 

I have a 2015 Crosstrek with 46,000 miles. I had the same issue. Took it to a Subaru dealer. They said it was a faulty valve body. They said it was covered under warranty and fixed it for free. They test drove it and I drove it home without any problems. The dealer found a bunch of other stuff that needed attention, so they got plenty of my money anyway…

 

I had the same issue.
Drove locally yersterday around 15 mins, the at oil temp started to flash, abs signs and hill assist sign on. Called Subaru services, was told $100 diagnosis fee to check.
I went this morning and had it fixed. Drove 40 mins there both local and highway, but no warning light again. They did the flush and transmission replacement. No idea if I am lucky or not, I was at over 99k miles and the warranty 10yr/100k. Transmission body cost of over $2000 was covered. Total bill a bit less than $600, took me the whole morning (8am - 12.45pm).

 

I had this happened and gas cap was loose. I had this happen again and checked has cap but didnt fix it this time even though it was a little loose. Maybe try disconnecting battery after work

 

hello i had the same thing happen, VDC, transmission messages, AT oil themp flashing, the ABS light and hill assist and a car with zig zag lines lights on. drove home and panicked, called my local Subaru, i was afraid to drive it in over the freeway but they said it would be ok. ended up being the transmission valve which was still under warranty.

 

I’m having this same issue. Just bought a 2014 Crosstrek with only 62K miles. Thought I got a great deal. Now these 4 lights came on today after my first tank of gas. After I stopped and let it sit. They went off. If I bring it to a dealer will codes show up even if no lights are on?

 

This has just happened to me with my 2014 xv.. I've taken back to dealership will update when I find out more

 

I wonder how many repairs have been done that were not needed? This Christmas tree of lights has happened to my 2015 Forester every year or two and then eventually goes away. I can't tell the cause but I seem to doubt it's a $2000 transmission repair. Seems like lots of things cause this same dash display... gas cap, old battery, rain, dust, brake light out, brake switch from recall, etc.

 

2020 Crosstrek touring, 70,000kms on it. I had the AT temp light flashing which set off all the other lights, hill assist, eye sight, traction control, check engine. P0700 and P2757 codes, took it in to dealership after running their diagnostics and checks they determined it needed a valve body replacement. I drove it for a few weeks while waiting for them to get the part and schedule replacement, car drove normal other than the Christmas tree lighting up periodically. I decided to put it in Si drive when my codes were cleared as when it happens it prevents you from doing that just to see what happens. Actually thought I’d found a cheat as it went over a week without the lights coming on till they finally did. Anyway, had the valve body replaced today, they changed the fluid and retrained transmission. Took it for a nice drive this evening and on my way home got the same light show on my dash. Haven’t checked the codes to see if they’re the exact same but definitely seems to be an electrical issue, will be calling dealership tomorrow

 

Dealership looked at it today, warranty department wanted them to change out the torque converter (p2557) but they talked them into replacing the entire transmission. Glad this is all under warranty, just hoping the next one lasts longer.

 

might as well throw mine on the list; 2018 Crosstrek with 75k miles.
wife was driving on I-5 in WA state during a raging wind & rainstorm last weekend (10/19/2024) while pulling a small motorcycle trailer (she'd already driven 112 miles without incident). I was not with her as I was riding my new-to-me '05 Goldwing. she said the dash lit up like a X-mas tree & she pulled over. was afraid to continue driving it, & I don't blame her. ended up towing it (AAA) on a roll-back to our local Subaru/Volvo service shop. they said Mon. morning that they'd love to take my money but the local dealer might be best bet. I started it and drove it with absolutely no indication of faults anywhere. $150 diagnose @ dealer with no codes evident in recent history. drove it home and for several days this week with no repeat of last weekend.

there's a LOT of information, over many years, on just this thread to weed through. does anyone have any direct, viable and succinct info on what to tell a dealership as they do not seem to know of a problem? I tried to explain the little I knew re: the solenoid/temp sensor but they kinda metaphorically hand-waved it away. without codes they can't really go forward and I understand that.
thanks in advance!

 

A battery load test with a printout is good so you can rule that out. Ask if they can read 'history' codes. Codes that were 'set' but went away. (Apparently there were none) Subaru dealer can definitely read 'history' codes.
Visually check everything in the engine compartment. Especially the battery cable connections. All that rain could have gotten something wet.
Check the engine air cleaner, maybe it sucked in some water.
Check the gas filler cap to make sure it fits securely.
Is it time to clean the intake valves??
I don't have a clue about a 2018 Crosstrek, the above is just a wild guess.

 

update on our situation from a month go...
threw the AT temp code middle of a dry day, no wind, etc. immediately upon startup after sitting for 30 minutes on 11/23/2024.
I drove straight to the dealership and thankfully the SA I got was, evidently, VERY familiar with this particular situation.
he checked me in and gave us a 2024 Crosstrek loaner, which we have subsequently fallen in love with...
he called & texted me on Tue. 11/26 stating they found the problem, it was the solenoid valve body (whatev it's actually called) & it's covered by Subaru.

is this something that's possibly on the verge of becoming a factory recall?

 

I have had these same lights light up on me ,the codes were P0700, P2764... replaced the Valve Body TCC Solenoid with an aftermarket Dorman .480 miles later ,no lights....knock on wood.
Details on a separate thread...
DIY 'able....

 

Update: as of 3/5/20205 the Subaru of America Case Rep said they'd cover $6,000 of the approximate $9,000 recommended replacement of a CVT assembly (parts, labor, fees, taxes). He didn't know if the dealership's shop manager, they were communicating with, was going to use refurbished or new parts (each have different warranties).
Hello!, If they would have fixed it correctly the first two times while it was under warranty within the past 12 months, I wouldn't be in this situation!
Now I'm potentially out approximately $3,000!! These same codes appeared within 14 days of my second repair and no one would see me without an appointment and couldn't diagnose once the warning lights went off (so they say).
I think they should pay for it entirely as if it were still under warranty.
I've had my maintenance done on a regular basis. I have the records.
I am looking into my options on whom to file a complaint with.


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Original Post: Feb 11, 2025.
My 2018 Crosstrek had P0700 and P2757 codes after the AT Oil Temp Light started flashing, with solid Hill Assist, Traction Control, and the Check Engine Light. Dealership replaced under warranty in March 2024. At end of May 2024 I had the same problems occur while on vacation about 215 miles from home. After horrible experience with Subaru's Road Side Assistance that wouldn't cover my tow to the nearest Subaru dealership, I followed my local dealership's direction to rest the vehicle and then I drove to nearest Subaru dealership. That dealership replaced the same parts again under warranty (Since I was 3.5 hours from home, I had to find transportation from/to dealership and my home at my own expense).
In under 2 weeks, the AT Oil Temp light started flashing again! (kicking on all the other solid warning lights). I called Subaru of America and my local dealership. No one could see me for a week. I went to a local Auto parts place and the codes came back again with P0700 and P2757. I asked Subaru of America for a full transmission replacement because neither of the two dealerships got to the root cause of the problem. Subaru refused and said they had to go by the technician's recommendation.
I've tried to have my codes read at 3 different dealerships but when I rest my vehicle for about 15 minutes (as directed), all lights but the Check Engine, will go off, and after about 4-5 restarts, all the warning lights are off. So, by the time any dealership could see me, the engine lights were off and they couldn't perform a diagnostic. This has been an ongoing issue for many months. I have some photographs of my dash when the lights go on, emails to SOA, phone logs, and print outs from auto parts places, and the Subaru dealership repair receipts. Recently I begged the local dealership to see me without an appointment because my AT Oil Temp light started flashing. They read the same P0700 and P2757 diagnostic codes. Oh, but now that I'm beyond the warranty mileage, the local dealership is recommending the transmission valve body assembly be replaced for approximately $9,000, at my cost.
Still waiting to hear from my Subaru Case Manager since my calls on Feb 6, Feb 7, and email on Feb 10, 2025. I'm considering to file a complaint with the BBB.
Any suggestions from this group are appreciated.
KG

 

My 2018 Crosstrek had P0700 and P2757 codes after the AT Oil Temp Light started flashing, with solid Hill Assist, Traction Control, and the Check Engine Light. Dealership replaced under warranty in March 2024. At end of May 2024 I had the same problems occur while on vacation about 215 miles from home. After horrible experience with Subaru's Road Side Assistance that wouldn't cover my tow to the nearest Subaru dealership, I followed my local dealership's direction to rest the vehicle and then I drove to nearest Subaru dealership. That dealership replaced the same parts again under warranty (Since I was 3.5 hours from home, I had to find transportation from/to dealership and my home at my own expense).
In under 2 weeks, the AT Oil Temp light started flashing again! (kicking on all the other solid warning lights). I called Subaru of America and my local dealership. No one could see me for a week. I went to a local Auto parts place and the codes came back again with P0700 and P2757. I asked Subaru of America for a full transmission replacement because neither of the two dealerships got to the root cause of the problem. Subaru refused and said they had to go by the technician's recommendation.
I've tried to have my codes read at 3 different dealerships but when I rest my vehicle for about 15 minutes (as directed), all lights but the Check Engine, will go off, and after about 4-5 restarts, all the warning lights are off. So, by the time any dealership could see me, the engine lights were off and they couldn't perform a diagnostic. This has been an ongoing issue for many months. I have some photographs of my dash when the lights go on, emails to SOA, phone logs, and print outs from auto parts places, and the Subaru dealership repair receipts. Recently I begged the local dealership to see me without an appointment because my AT Oil Temp light started flashing. They read the same P0700 and P2757 diagnostic codes. Oh, but now that I'm beyond the warranty mileage, the local dealership is recommending the transmission valve body assembly be replaced for approximately $9,000, at my cost.
Still waiting to hear from my Subaru Case Manager since my calls on Feb 6, Feb 7, and email on Feb 10, 2025. I'm considering to file a complaint with the BBB.
Any suggestions from this group are appreciated.
KG

If the valve body was replaced under warranty in mar 2024 (replacement part has it's own warranty)and the same problem has resurfaced, that part should be covered ,and your car should be covered by the extended warranty for CVTs,.I believe you are covered for 10 yrs 100k miles -
if you are in California I think it's up to 150k ( correct me if I'm wrong)....
If all fails and just going by your story,looks like you have a good case here....
BBB and your state office of the attorney general can help too unless they are too busy to help it's tax payers??
And then there is the Lemon Law which you can use to demand them fix a known issue ....
I'm not a lawyer ....these merely are opinions...
Good luck

 

It’s a transmission pressure sensor solenoid. Took me 6 hours to change, but fixed the problem. The only noticeable change was slightly higher RPM before shifting, but it was really subtle and easy to overlook.

 

Intermittent problems are tough to solve even for a good mechanic. Buy a good multi meter and learn how to check your battery and electrical system, including minimum cranking voltage. Get a OBD scanner for about $50 at Princess Auto, www.autel.com and just collect all the numerical intermittent data. Then your mechanic can fix it.
Now onto my 4th Subie, it's a 2024 Crosstrek Onyx built in Japan with the 2.5L engine.

 

Similar issue here too, I have a 2016 Crosstrek with 130k+ miles on it. My AT OIL temp light started flashing on the way into work today. Hill Assist, Traction Control, and lane assist also came on. Eyesight quit working as well. Recently had an oil change but I've taken it on multiple road trips with no problems.

 

Might be as simple as needing a new sensor??