Intake Manifold Tuning Valve Performance Bank 1

Where it lives

For P065E, the description names the valve as the part involved. The description of P065E puts it on bank 1.

Check these first

• A stuck intake manifold tuning valve on bank 1
• Carbon buildup in the bank 1 intake runner
• A failed tuning valve actuator on bank 1
• A wiring fault on the bank 1 tuning valve
• A faulty PCM output

What to do next

1. Command the bank 1 tuning valve with a scan tool and watch it move
2. Check the bank 1 tuning valve for carbon or binding
3. Inspect the bank 1 tuning valve connector and wiring
4. Test the actuator command from the PCM
5. Replace the bank 1 tuning valve if it does not move on command
6. Clear the code and retest

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