U2628
Reductant Control Module Lost Communication With Reductant Concentration Sensor
U2628 is an OBD-II diagnostic trouble code meaning: Reductant Control Module Lost Communication With Reductant Concentration Sensor. Common causes: open or short circuit in the concentration sensor circuit, reagent concentration sensor malfunction. Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Possible engine power limitation
- SCR system error message on instrument panel
- Increased NOx emissions
- Inability to perform DPF regeneration
Causes
- Open or short circuit in the concentration sensor circuit
- Reagent concentration sensor malfunction
- Problems with the SCR control module
- Damage to the SCR system wiring harness
- Problems with power or grounding of components
How to Fix
- Check the integrity of the wiring to the concentration sensor
- Check the power supply and grounding of the sensor
- Scan the SCR module for additional errors
- Replace the concentration sensor if necessary
- Update or replace SCR control module if necessary
Related codes
FAQ
What does the U2628 code mean?
U2628 is an OBD-II diagnostic trouble code that indicates: Reductant Control Module Lost Communication With Reductant Concentration Sensor
What causes a U2628 error code?
The most common causes of U2628 include: Open or short circuit in the concentration sensor circuit; Reagent concentration sensor malfunction; Problems with the SCR control module; Damage to the SCR system wiring harness.
How do I fix a U2628 diagnostic trouble code?
To fix U2628: Check the integrity of the wiring to the concentration sensor. Check the power supply and grounding of the sensor. Scan the SCR module for additional errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U2628?
Yes, but get it checked soon
How much does it cost to fix U2628?
The estimated repair cost for U2628 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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