with code U79 (BLUETEC (SCR) diesel exhaust treatment, generation 3)
P49.20-2110-79
Example illustration of engine 608
1.1
NOxsensor control unit upstream of SCR catalytic converter
P49.20-2111-79
Example illustration of exhaust system on engine 608
1.2
NOx sensor control unit downstream of SCR catalytic converter
Location
The NOx sensor control unit upstream of the SCR catalytic converter is usually located upstream of the oxidation catalytic converter or on the exhaust pipe downstream of the SCR catalytic converter
