Reductant circuit
Proceed as follows: Carry out the test "Checking the reductant circuit" using SDP3 under EEC3>Inspection>Guided troubleshooting. If the pressure remains too low or high check the connectors and electrical cables between the EEC control unit and the reductant pressure sensor in the reductant doser. If the connectors and electrical cables seem intact, and the pressure remains too low or too high, renew the reductant doser. When the fault has been rectified the fault code can be deactivated 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
The reductant pressure is too low or too high when the reductant pump is shut off.
Fault in the reductant pressure sensor or in its connectors or electrical cables.