Reductant Pressure Too High

Check these first

• A failed reductant pressure sensor
• A clogged reductant line or filter
• A failed reductant pump
• A restriction in the reductant return line

What to do next

1. Read reductant pressure on a scan tool
2. Check the reductant line and filter for a clog
3. Test the reductant pressure sensor against a gauge
4. Check the reductant return line for a restriction
5. Replace the reductant pressure sensor if the gauge agrees
6. Clear the code and retest

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