Reductant pump voltage supply, electrical fault.
Check for electrical faults on the pins on the EEC control unit that are connected to the reductant pump voltage supply. For a detailed harness and pin description see the electrical component, under the check tab, in the diagnostic tool. For a general description about different methods for electrical failure checks see the work shop manual subgroup 16-70. In order to inactivate the electrical fault code it is necessary to restart the EEC control unit and activate the actuator. This can be done by first cycling the ignition and then running the reductant circuit test with the diagnostic tool or cycling the ignition and then running the system in such a way that the actuator is activated.
What you'll see
No driver-visible symptom recorded.
System reaction
The reductant pump is stopped which leads to higher emissions. Note: This fault shuts off the reductant flow in the system. This affects the cooling of the reductant dosing unit. Combined with high exhaust temperatures this could damage the reductant dosing unit.
Diagnostic depth
The EEC control unit is indicating an electrical fault on the pins connected to the reductant pump voltage supply.
An electrical fault on the pins connected to the reductant pump voltage supply.