Reductant pick-up unit, T4002
â–¶ How to fix
Check the reductant pick-up unit circuit. 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. 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
Detection
Fault on voltage supply to reductant pick-up unit.
Possible cause
Short circuit to ground in reductant pick-up unit circuit.