Hello, I have a question. Yesterday I had the error code read out at my Yaris (5013-406, year 1999, 310,000 Km) in a workshop (yellow MKL was on). Result: error code: P0420 efficiency Cat. bank 1 efficiency below minimum The car has a slightly increased consumption of about 0.3 – 0.4 liters/100 Km and it also attracts a little bit worse than usual… Do I need a new control probe now? 1000 Thanks and many greetings!