Fuel injection for exhaust gas aftertreatment
Check the circuit for the air control valve.Further information about the electrical cables and pins on the control unit to which the components are connected is available in SDP3 under the tab Check for the relevant components. 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. Deactivate the fault code as follows: Switch the power off and on with the starter key.Carry out the test "Checking fuel injection for exhaust gas aftertreatment" using SDP3.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Fault in air control valve to fuel injection nozzle.
Electrical fault in the circuit for the air control valve. The circuit is short-circuited to battery voltage.