Cylinder 4 Exhaust Valve Control Circuit Low

Where it lives

For P3431, the valve sits on the circuit this code reports. The description of P3431 puts it on cylinder 4.

Check these first

• A short to ground on the cylinder 4 exhaust valve control circuit
• High resistance in the cylinder 4 exhaust valve control wiring
• A failed cylinder 4 exhaust valve control solenoid
• Low supply voltage at the cylinder 4 exhaust valve control circuit
• A corroded cylinder 4 exhaust valve control connector

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 a short to ground
4. Measure the cylinder 4 exhaust valve control solenoid resistance
5. Replace the cylinder 4 exhaust valve control solenoid if the circuit tests good
6. Clear the code and retest

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