MKL once in a while will be crazy help

Hello Opelgemeinde, I am slowly despairing with my MKL. Until 1 week ago my engine was constantly in the emergency running program (MKL on). I read out the error memory with the flashing diode. Filed error: 3 x 12 – diagnostic start 3 x 92 NWS sensor – wrong signal. I ran and build an original Siemens from the bay with the new oval plug. Motor on MKL is off – joy. Recently MKL times off. Reread error memory. 3 x 12 – diagnostic start, 3 x 13 Lamda, 3 x 92 NWS. What’s that? Can someone help me, am with my Latin at the end. When the MKL is off the car is going great, has acceleration etc. . . Then you start driving. Sometimes after re-engine start or stays on. Sometimes the next morning MKL from all day. Then all day again. Does the NWS with the Lamda do anything (following error) ? Is the MKL off, no error present. Greeting Jugo 2