Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that there's a problem with the way the car controls the exhaust valve on the engine's cylinder number 9. It's like a switch isn't working right, so the car can't open and close a part properly.
The P3471 code indicates that the engine control module (ECM) has detected a low voltage or resistance issue in the exhaust valve control circuit for cylinder 9.
The P3471 code is triggered when the ECM detects a low signal or voltage in the exhaust valve control circuit of cylinder 9. This could be due to a faulty solenoid, wiring issues, or a problem with the ECM itself. The exhaust valve control is crucial for regulating the flow of exhaust gases out of the cylinder, impacting engine performance and emissions.
• Check Engine Light illuminated
• Reduced engine performance
• Increased emissions
• Faulty exhaust valve control solenoid
• Damaged or corroded wiring or connectors
• Faulty ECM
ECM: Engine Control Module, the computer that manages engine functions.
Solenoid: An electromechanical device used to control a valve or switch.
• Perform a visual inspection of the wiring and connectors for damage or corrosion.
• Use a multimeter to check the voltage and resistance in the exhaust valve control circuit.
• Test the exhaust valve control solenoid for proper operation.
• Replace the faulty exhaust valve control solenoid.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance and inspection of engine components.
• Ensure wiring and connectors are free from corrosion.
• Use quality fuel to prevent carbon buildup.
Engine Performance
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle under heavy load until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been more common in vehicles with higher mileage and those that have not been regularly maintained.
Moderate – While the vehicle can still be driven, it may experience reduced performance and increased emissions.
Driving with this code may lead to increased emissions, which can affect environmental compliance.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The exhaust valve control solenoid for cylinder 9 is typically located on or near the engine cylinder head.
Q: Can I drive with a P3471 code?
A: It's possible to drive with this code, but it's not recommended as it can lead to reduced engine performance and increased emissions.
Q: How serious is the P3471 code?
A: It's moderately serious. While it won't immediately damage your vehicle, it should be addressed to maintain engine efficiency and emissions compliance.
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