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 the computer in the car is having trouble controlling the exhaust valve for the ninth cylinder. It's like a switch that isn't working right, making it hard for the car to 'breathe' out properly.
The P3472 code indicates a problem with the electrical circuit that controls the exhaust valve for cylinder 9. The circuit is reading a voltage that is higher than expected.
The P3472 code is triggered when the Powertrain Control Module (PCM) detects a high voltage condition in the exhaust valve control circuit for cylinder 9. This could be due to a short circuit, a faulty solenoid, or a problem with the wiring or connectors.
• Check Engine Light is on
• Engine misfires
• Reduced engine performance
• Faulty exhaust valve solenoid
• Short circuit in the wiring
• Poor electrical connection
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the exhaust valve solenoid for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty exhaust valve solenoid.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance checks
• Ensure electrical connections are secure
• Use quality replacement parts
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional mechanic.
Check with the vehicle manufacturer for specific warranty coverage related to engine components.
This code has been reported in vehicles with higher mileage or those that have not been regularly maintained.
Moderate – It should be addressed soon to avoid further engine performance issues.
Driving with a Check Engine Light on can lead to further damage and may not be safe.
• Engine at operating temperature
• Vehicle in idle or under load
The exhaust valve solenoid for cylinder 9 is located on the engine, typically near the cylinder head.
Q: Can I drive with a P3472 code?
A: It's not recommended to drive for long periods with this code as it can affect engine performance.
Q: How do I clear the P3472 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
High-End · Full-system diagnostics
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Network faults often require full-system access instead of a generic code reader alone.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.