hi, this code seems to be a relay problem or relay box problem have you replace the transmission relay yet
If you are referring to the little black cubed-shape fuse inside the fuse-box that is under the hood, the answer is YES. The owner's manual diagram of the fuse-box calls it the Electronic Automatic Trans-axle (EATX) relay.
Hello, My name isXXXXX to Just Answer. I will do my best to help you with your concern. When you had the vehicle scanned at the dealer did they give you the codes that they retreived? I see that when you had it scanned, you had the P0700 code, this code is stored in the ECM to tell you that there is a code in the TCM (transmission controller). If you can post any codes pulled out of the TCM, I can help to steer you in the right direction to get your concern solved.
PS. I looked up the P0888 code, that code is telling you that the Transmission Relay output is always off, I will post the Diag Chart for that code. This may help with your concern. If you need more info, click reply. Thanks
P0888 Diag Chart - Click Here.