Reductant Injection Valve Circuit Low Bank 2 Unit 1

Where it lives

For P2051, the circuit described runs through the valve. The description of P2051 puts it on bank 2.

Check these first

• A short to ground on the bank 2 unit 1 reductant injection valve control wire
• A failed bank 2 unit 1 reductant injection valve coil
• A low DEF level starving the valve
• Corrosion at the valve connector pulling the circuit low

What to do next

1. Read the bank 2 unit 1 reductant injection valve circuit on a scan tool
2. Check the DEF level in the tank
3. Test the valve control wire for a short to ground
4. Check the valve coil resistance against spec
5. Replace the bank 2 unit 1 reductant injection valve if the circuit tests good
6. Clear the code and retest

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