Cylinder 3 Exhaust Valve Control Circuit Low

Where it lives

For P3423, the circuit described runs through the valve. The description of P3423 puts it on cylinder 3.

Check these first

• A short to ground on the cylinder 3 exhaust valve control circuit
• High resistance in the cylinder 3 exhaust valve control wiring
• A failed cylinder 3 exhaust valve control solenoid
• Low supply voltage at the cylinder 3 exhaust valve control circuit
• A corroded cylinder 3 exhaust valve control connector

What to do next

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

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