Cylinder 7 Exhaust Valve Control Circuit High

Where it lives

For P3456, the circuit described runs through the valve. The description of P3456 puts it on cylinder 7.

Check these first

• A short to voltage on the cylinder 7 exhaust valve control circuit
• An open ground at the cylinder 7 exhaust valve control solenoid
• A failed cylinder 7 exhaust valve control solenoid
• A failed driver in the control module for the cylinder 7 exhaust valve circuit
• A chafed cylinder 7 exhaust valve control wire touching voltage

What to do next

1. Read the cylinder 7 exhaust valve control status on a scan tool
2. Command the cylinder 7 exhaust valve control solenoid on and off
3. Test the cylinder 7 exhaust valve control circuit for a short to voltage
4. Check the cylinder 7 exhaust valve control ground for continuity
5. Replace the cylinder 7 exhaust valve control solenoid if the circuit tests good
6. Clear the code and retest

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