Reductant Injection Valve Stuck Open Bank 2 Unit 1

Where it lives

For P20F7, the description names the valve as the part involved. The description of P20F7 puts it on bank 2.

Check these first

• A clogged reductant injection valve bank 2 unit 1
• A failed reductant injection valve held open
• An open or short in the reductant injection valve circuit
• A restriction in the reductant supply line

What to do next

1. Command the bank 2 unit 1 reductant injection valve on a scan tool
2. Test the reductant injection valve circuit
3. Check the reductant supply line for a restriction
4. Replace the bank 2 unit 1 reductant injection valve if it stays open
5. Clear the code and retest

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