P2047
PPowertrainAdBlue Injector Circuit/Open (Bank 1)
What does this code mean?
Severity : MediumP2047 indicates an open or electrical fault in the reductant injection valve circuit, the bank 1 AdBlue/DEF injector. This injector sprays AdBlue into the exhaust ahead of the SCR catalyst. The ECU detects a problem in its control circuit and can no longer dose AdBlue correctly.
Symptoms
- AdBlue or check engine light on.
- Warning message with a countdown before engine start is restricted.
- Higher NOx emissions.
- Possible power reduction depending on the vehicle.
Possible causes
- AdBlue injector connector corroded or heat damaged.
- Wiring broken or melted near the exhaust.
- Faulty AdBlue injector winding.
- Faulty fuse or power supply.
- Less commonly, an ECU fault.
Diagnosis and repair
- Inspect the injector connector and wiring, especially near hot areas.
- Measure injector resistance and compare it to the manufacturer's values.
- Check supply voltage and control signal at the connector.
- Repair the wiring or replace the AdBlue injector.
- Clear the code and run a dosing test with a diagnostic tool.
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Code
P2047
Category
Powertrain
Prefix
P
Standard
OBD-II / SAE J2012