Reductant Injection Valve Circuit High Bank 1 Unit 2

Where it lives

For P2055, the circuit described runs through the valve. The description of P2055 puts it on bank 1.

Check these first

• An open in the bank 1 unit 2 reductant injection valve control wire
• A short to voltage on the valve circuit
• A failed bank 1 unit 2 reductant injection valve
• A low DEF level or a faulty NOx or temperature sensor skewing control

What to do next

1. Read the bank 1 unit 2 reductant injection valve circuit on a scan tool
2. Test the valve control wire for an open
3. Test the valve circuit for a short to voltage
4. Check the DEF level and the NOx and temperature sensors
5. Replace the bank 1 unit 2 reductant injection valve if the circuit tests good
6. Clear the code and retest

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