The upshift arrow is blinking and the check engine light is on and I got two codes. A P1618 which the code scanner doesn't recognise but VADIS says it's "DTC in another control module," and a P0758 which the scanner calls "shift solenoid B circuit electrical" problem. Where do I start?

 

probably with replacing the overdrive solenoid?

 

For what it's worth P1618 is "Signal through the connection between ECM (B26) and TCM (B15) too low. Flash EPROM Reprogram Error."

If you know what it means let everybody know, please.

 

Did you clear them and they can right back?

 

Yes.