Voltage supply for components in the SCR system
Check the reductant doser connectors and electrical cables.Check the reductant doser. The resistance should be 14–15 ohms at a temperature of 20°C.Check battery voltage. Use the More information button to check whether the voltage was low or high when the fault code was generated.Proceed as follows to verify that the fault has been rectified:Switch off the 15 voltage, wait for at least 90 seconds and switch on the 15 voltage again.If the fault has been rectified, the fault code becomes inactive. Clear the fault code.Switch the 15 voltage off and on three times in succession at 10 second intervals to extinguish the warning lamp.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
The voltage in the reductant doser power supply circuit has been too low.
Interruption in the reductant doser power supply circuit.