Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that helps open and close the exhaust valve in cylinder 9. It's like a door that lets out air, and it's not working right.
The P3470 code is triggered when the Engine Control Module (ECM) detects an issue with the performance of the exhaust valve control circuit for cylinder 9. This could mean the valve isn't opening or closing properly.
The P3470 code indicates a performance issue with the exhaust valve control circuit for cylinder 9. This circuit controls the timing and operation of the exhaust valve, which is crucial for proper engine performance and emission control. Anomalies in this circuit can lead to inefficient engine operation.
• Check Engine Light is on
• Poor engine performance
• Increased emissions
• Faulty exhaust valve control solenoid
• Wiring issues in the exhaust valve control circuit
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
Solenoid: An electromechanical device that controls a mechanical action.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the exhaust valve control solenoid for proper operation.
• Replace or repair damaged wiring or connectors.
• Replace the faulty exhaust valve control solenoid.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance and inspection of engine components.
• Keeping electrical connections clean and secure.
• Using high-quality engine oil and fuel.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you're not experienced with car repairs.
Check if your vehicle's powertrain warranty covers engine component repairs.
This code has been associated with vehicles using advanced variable valve timing systems, which can be sensitive to electrical issues.
Moderate – It should be addressed soon to prevent further engine damage.
Driving with a malfunctioning exhaust valve can lead to increased emissions, which may not comply with environmental regulations.
• Engine at operating temperature
• Vehicle in a safe and level location
The exhaust valve control solenoid for cylinder 9 is typically located on the cylinder head, near the valve cover.
Q: Can I drive with a P3470 code?
A: It's not recommended to drive for long with this code as it can lead to poor engine performance and increased emissions.
Q: What happens if I ignore the P3470 code?
A: Ignoring the code can lead to further engine damage and potentially more costly repairs.
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