Reductant Pressure Too Low

Check these first

• A low DEF level in the tank
• A leak or restriction in the reductant supply line
• A failed reductant pump
• A failed reductant pressure sensor

What to do next

1. Read reductant pressure on a scan tool
2. Check the DEF level and the supply line for leaks
3. Command the reductant pump on and watch pressure
4. Replace the reductant pump if pressure does not build
5. Clear the code and retest

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