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 engine that helps control the opening and closing of the exhaust valve in cylinder number 10. It's like a switch that isn't working right.
The engine control module (ECM) has detected a high voltage condition in the exhaust valve control circuit for cylinder 10.
P3480 is a diagnostic trouble code (DTC) for a high voltage condition in the exhaust valve control circuit for cylinder 10. This could indicate an electrical fault such as a short to voltage, or a failure in the actuator or wiring associated with the exhaust valve control.
• Check Engine Light illuminated
• Reduced engine performance
• Engine misfire or rough running
• Faulty exhaust valve control solenoid
• Wiring issues such as short to voltage
• Faulty ECM
ECM: Engine Control Module
DTC: Diagnostic Trouble Code
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for cylinder 10's exhaust valve control circuit.
• Test the exhaust valve control solenoid for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the exhaust valve control solenoid.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Dodge Ram 1500
• Chrysler 300
• Jeep Grand Cherokee
• Regular maintenance and inspection of engine components.
• Ensure proper electrical connections.
• Use quality parts for repairs.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regularly maintain your vehicle to prevent such issues.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code is commonly associated with V8 engines that use cylinder deactivation technology.
Moderate – While the vehicle may still be drivable, it should be inspected soon to prevent further damage.
Driving with a known issue can lead to further damage and may not be safe. Always address Check Engine Light issues promptly.
• Engine at operating temperature
• Vehicle in park or neutral
The exhaust valve control solenoid for cylinder 10 is located on the engine, typically near the cylinder head.
Q: Can I drive with a P3480 code?
A: It's possible to drive short distances, but it's not recommended as it can lead to further engine damage.
Q: How do I clear a P3480 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.