Open circuit or damaged wiring to the dosing injector; Faulty dosing injector coil; Corroded or loose connector, often due to heat or AdBlue contamination; ECU output driver fault (rare).

SCR / AdBlue

P2047 Reductant (AdBlue/DEF) Injector Circuit/Open (Bank 1 Unit 1)

The ECU monitors the electrical circuit of the AdBlue (DEF) dosing injector. P2047 is set when an open circuit or abnormal circuit condition is detected.

Common causes

Open circuit or damaged wiring to the dosing injector
Faulty dosing injector coil
Corroded or loose connector, often due to heat or AdBlue contamination
ECU output driver fault (rare)

Typical symptoms

Check engine light and/or AdBlue warning on
AdBlue dosing disabled
Countdown to engine start restriction on many vehicles

P2047 and NuoVolta

If the SCR/AdBlue system has been removed or disabled for off-road or motorsport use, where permitted by law, the NuoVolta AdBlue / SCR / NOx Removal solution adjusts the ECU calibration and the DTC removal feature can disable this code. On a working system, check the injector resistance and wiring first.

AdBlue / SCR / NOx Removal Available for 121 ECUs

Related codes

P203FReductant (AdBlue/DEF) Level Too Low P20E8Reductant (AdBlue/DEF) Pressure Too Low P20EESCR NOx Catalyst Efficiency Below Threshold (Bank 1)

Diagnose and repair real faults first. Removing or disabling emission systems is only permitted where allowed by law, for example for off-road or motorsport use.