EXHAUST GAS NOX SENSOR RVI/ VOLVO RANGE T/ KERAX// FH/ FM/ FMX EURO6; EXHAUST GAS NOX SENSOR / BEFORE THE CATALYTIC CONVERTER / NOTE!!! THE CONDITION FOR ACCEPTING THE NOX SENSOR FOR COMPLAINT CONSIDERATION IS TO ATTACH A PRINTOUT WITH ERROR CODES FROM THE DIAGNOSTIC COMPUTER AND CONFIRMATION OF CLEANING THE SCR SYSTEM