Reductant circuit
â–¶ How to fix
Proceed as follows: Carry out the test "Checking the reductant circuit" using SDP3 under EEC3>Inspection>Guided troubleshooting. If the speed of the reductant pump is too high, the test will be terminated. If the test is terminated: Check the connectors and electrical cables between the control unit EEC and reductant pump rotational speed sensor. If the connectors and electrical cables are intact, renew the reductant pump. Deactivate the fault code by carrying out the test "Checking the reductant circuit" using SDP3.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The reductant pump speed has been too high.
Possible cause
Fault in the reductant pump or in the reductant pump rotational speed sensor.