Cylinder 8 Exhaust Valve Control Circuit Low

Where it lives

For P3463, the circuit described runs through the valve. The description of P3463 puts it on cylinder 8.

Check these first

• A short to ground on the cylinder 8 exhaust valve control circuit
• High resistance in the cylinder 8 exhaust valve control harness
• A failing exhaust valve control solenoid on cylinder 8
• Low system voltage from a weak battery or a charging fault

What to do next

1. Read the stored code and freeze frame data on a scan tool
2. Check battery voltage and charging system output
3. Test the cylinder 8 exhaust valve control circuit for a short to ground
4. Measure resistance in the cylinder 8 exhaust valve control harness
5. Replace the cylinder 8 exhaust valve control solenoid if the wiring passes
6. Clear the code and retest

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