Exhaust gas temperature sensor upstream of SCR catalytic converter
Check the circuit for the exhaust gas temperature sensor upstream of the SCR catalytic converter.Further information about the electrical cables and pins on the control unit to which the component is connected is available in SDP3 under the tab Check for the relevant component. See also the Workshop manual, section 03-35 Electronic control system, E67.There is a general description of the different troubleshooting methods for electrical faults in the Workshop Manual, subgroup 16-70.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Fault on the exhaust gas temperature sensor upstream of the SCR catalytic converter.
Electrical fault in the exhaust gas temperature sensor circuit upstream of the SCR catalytic converter. The circuit is open or short-circuited to battery voltage.