Intake Manifold Tuning Valve Exceeded Learning Limit Bank 1

Where it lives

For P2D31, the description names the valve as the part involved. The description of P2D31 puts it on bank 1.

Check these first

• Carbon in the bank 1 intake manifold tuning valve
• A worn bank 1 tuning valve actuator
• Binding in the bank 1 tuning valve linkage
• A drifting bank 1 tuning valve position sensor
• A faulty PCM output to the bank 1 tuning valve

What to do next

1. Command the bank 1 tuning valve with a scan tool
2. Clean carbon from the bank 1 tuning valve
3. Check the tuning valve linkage for binding
4. Compare the valve position to the command
5. Replace the bank 1 tuning valve if it will not learn
6. Clear the code and retest

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