U0619
Lost Communication With Reductant Level Sensor A
U0619 is an OBD-II diagnostic trouble code meaning: Lost Communication With Reductant Level Sensor A. Common causes: open or short circuit in the adblue level sensor circuit, malfunction of the level sensor itself. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Low AdBlue message on the dashboard (even with a full tank)
- Reduced engine power
- Speed limit (on some models)
- Inability to start the engine after several attempts
Causes
- Open or short circuit in the AdBlue level sensor circuit
- Malfunction of the level sensor itself
- Problems with the sensor connector (oxidation, damage)
- SCR control module malfunction
- ECU software error
How to Fix
- Check the integrity of the wiring and connectors of the AdBlue level sensor
- Check the power supply and ground of the sensor
- Test the level sensor (resistance, signals)
- If necessary, replace the AdBlue level sensor
- Reset the error and check the system
- Repair only from an authorized dealer
Related codes
Error U0619 by Vehicle Brand
FAQ
What does the U0619 code mean?
U0619 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Reductant Level Sensor A
What causes a U0619 error code?
The most common causes of U0619 include: Open or short circuit in the AdBlue level sensor circuit; Malfunction of the level sensor itself; Problems with the sensor connector (oxidation, damage); SCR control module malfunction.
How do I fix a U0619 diagnostic trouble code?
To fix U0619: Check the integrity of the wiring and connectors of the AdBlue level sensor. Check the power supply and ground of the sensor. Test the level sensor (resistance, signals). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0619?
Limited driving only, diagnose soon
How much does it cost to fix U0619?
The estimated repair cost for U0619 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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