Cylinder 9 Exhaust Valve Control Circuit Performance

Where it lives

For P3470, the description names the valve as the part involved. The description of P3470 puts it on cylinder 9.

Check these first

• An intermittent open or short in the cylinder 9 exhaust valve control circuit
• A slow or sticking exhaust valve control solenoid on cylinder 9
• Carbon buildup limiting exhaust valve actuator travel on cylinder 9
• A control module that is losing feedback from the cylinder 9 exhaust valve circuit

What to do next

1. Read the stored code and freeze frame data on a scan tool
2. Command the cylinder 9 exhaust valve control solenoid on and off
3. Compare the commanded and actual cylinder 9 exhaust valve positions
4. Inspect the cylinder 9 exhaust valve actuator for binding or carbon
5. Replace the cylinder 9 exhaust valve control solenoid if the circuit tests good
6. Clear the code and retest

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