PuMA measure SCR System - CC message: Ad-Blue system fault V1-R2-RO 63310358-02 - 20/04/17 Complaint: The customer complains about CC message or MIL (Malfunction Indicator Light) Ad-Blue system fault. The following faults may be entered in the fault memory: SCR03 8052D0 -- Active tank, pre-supply pump delivers air (PUMP_AIR) 2C3000 -- SCR system, Diagnosis feedback: Transmission status system fault OBD from SCR control unit to DDE SCR03 8052CD -- Active tank, communication fault Cause Application SCR control unit Measure In the event of a customer complaint, run diagnosis with ISTA/Next and work through the possible faults with the test module, if necessary. Then program and encode the vehicle with ISTA/Next 4.04.1x or ISTA/P 3.61.0 to integration level S15A-17-03-502 or a more recent version. Then clear the fault code memory and reassess the vehicle. A parts replacement does not provide a remedy. Note on invoicing: Processing and reimbursement must be conducted according to current warranty conditions.