Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble controlling a part that helps a specific engine cylinder breathe out properly.
This code indicates that the engine control module (ECM) has detected a high voltage condition in the exhaust valve control circuit for cylinder 12.
The P3496 code is triggered when the ECM detects a voltage level that is higher than expected in the exhaust valve control circuit of cylinder 12. This could be due to a malfunctioning valve, wiring issues, or a problem with the ECM itself.
• Check Engine Light is on
• Reduced engine performance
• Engine misfire
• Increased fuel consumption
• Faulty exhaust valve control solenoid
• Open or shorted exhaust valve control circuit
• Poor electrical connection in the exhaust valve control circuit
• Faulty ECM
ECM: Engine Control Module, the computer that manages engine functions.
Solenoid: A device that converts electrical energy into mechanical movement.
• Use an OBD-II scanner to confirm the code.
• Inspect the exhaust valve control solenoid and wiring for damage.
• Check for proper voltage and ground at the control solenoid.
• Test the ECM for proper operation.
• Replace the exhaust valve control solenoid if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the ECM if it is determined to be faulty.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Honda Accord
• Honda Pilot
• Honda Odyssey
• Regular maintenance and inspection of the engine components
• Ensure proper electrical connections
• Use high-quality engine oil
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional mechanic.
Check with your vehicle manufacturer for specific warranty coverage related to engine components.
This code is commonly associated with Honda vehicles equipped with VCM (Variable Cylinder Management) systems.
Moderate – It is advisable to address this issue soon to prevent further engine damage.
Driving with a malfunctioning engine component can lead to increased emissions and potential safety risks.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The exhaust valve control solenoid for cylinder 12 is typically located on the cylinder head near the exhaust manifold.
Q: Can I drive with a P3496 code?
A: It is not recommended to drive for extended periods with this code as it can cause further engine damage.
Q: How can I reset the Check Engine Light?
A: You can reset the light with an OBD-II scanner after addressing the issue, but it may come back if the problem is not fixed.
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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.