Cylinder 12 Exhaust Valve Control Circuit Low

Where it lives

For P3495, the valve sits on the circuit this code reports. The description of P3495 puts it on cylinder 12.

Check these first

• A short to ground on the cylinder 12 exhaust valve control circuit
• High resistance in the cylinder 12 exhaust valve control harness
• A failing exhaust valve control solenoid on cylinder 12
• 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 12 exhaust valve control circuit for a short to ground
4. Measure resistance in the cylinder 12 exhaust valve control harness
5. Replace the cylinder 12 exhaust valve control solenoid if the wiring passes
6. Clear the code and retest

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