Cylinder 4 Exhaust Valve Control Circuit/Open

Where it lives

For P3429, the circuit described runs through the valve. The description of P3429 puts it on cylinder 4.

Check these first

• An open in the cylinder 4 exhaust valve control circuit
• A failed cylinder 4 exhaust valve control solenoid
• A disconnected or unseated cylinder 4 exhaust valve control connector
• Corroded or backed out pins at the cylinder 4 exhaust valve control connector
• A failed driver in the control module for the cylinder 4 exhaust valve circuit

What to do next

1. Read the cylinder 4 exhaust valve control status on a scan tool
2. Command the cylinder 4 exhaust valve control solenoid on and off
3. Test the cylinder 4 exhaust valve control circuit for an open
4. Check the cylinder 4 exhaust valve control connector pins for corrosion and fit
5. Replace the cylinder 4 exhaust valve control solenoid if the wiring tests good
6. Clear the code and retest

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