Alright so I am at the end my rope. Engine light has been on since I got the car. I’ve recently taken it to my shop and got them to drop the pan. They said one of the solenoid’s was bad. It was DTC P2757. Got the car back, drove it on the highway and bam, code is back. I cleared it on techstream. Drove it for a few “trip” cycles and sure enough it showed back up as a current DTC. Cleared again, ran check mode to make the DTC show up quicker. Got the freeze frame. Engine speed from EFI is 1606 and SPD(ng) is 1450 - difference of 156. I suspect that is triggering the DTC since the lock up should make these two numbers very close. Can someone help educate me here on what is causing this error? I am so tired of this issue.

 

I worry that the lock-up clutch is slipping or the lock-up solenoid is not working well enough. Sometimes the pressure is not high enough.

 

The thing is, they replaced one of the solenoids. Says they replaced the TCC LOCK-UP control solenoid. I’m so confused about the work done because I provided them with a Lexus solenoid part number 3528030050 because I had already purchased it in a Lexus online sale. They said it was not the one that is needed. I thought they would use Lexus solenoid from the dealer cause that is what my invoice said, but they used a solenoid from Summit. Talked to them and let them know that the work they did has not solved the issues. We will see what they say. Also, disappointed that they informed me BG transmission fluid was used and not ATF world. I had high hopes for this shop. I’m working with the owner to see how to proceed after spending $1300 for parts and labor to fix the tranny problem and my oil pan leak.