Messerchmidt

Hello, currently fighting with Mercedes Canada for them to cover the adblue heater and sensor under warranty on my 2010 bluetec. In the interim, I need to get my plate sticker, and so need to shut off the check engine light to pass a computerized emissions test via the obd2 port.what exact resistor is required to put in place of the sensor, etc in the interim? 10k ohm or? What voltage? Please advise. Thabks