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 part of your car that helps make the engine run smoothly. It's like when a light bulb doesn't work because the wire isn't connected well.
The ignition coil for cylinder 7 is experiencing higher than normal resistance or impedance, which can affect the engine's performance.
The ignition coil is responsible for converting the car battery's voltage into a much higher voltage to ignite the fuel-air mixture in the engine. Code P3319 indicates that the ignition coil in cylinder 7 has a contact resistance or impedance issue, which may lead to misfires or poor engine performance.
• Engine misfire
• Rough idling
• Reduced fuel efficiency
• Faulty ignition coil
• Corroded or damaged wiring/connectors
• Faulty spark plug
Ignition Coil: A component that transforms the battery's voltage to a higher voltage to ignite the fuel-air mixture.
Impedance: The resistance of an electric circuit to the flow of alternating current.
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil and wiring for cylinder 7.
• Test the resistance of the ignition coil with a multimeter.
• Replace the faulty ignition coil.
• Repair or replace damaged wiring or connectors.
• Replace the spark plug if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect ignition components.
• Keep electrical connections clean and secure.
• Replace spark plugs at recommended intervals.
Engine Performance
• Address the issue promptly to avoid further engine damage.
• Consider regular maintenance to prevent recurrence.
Check with your vehicle manufacturer for specific warranty coverage on ignition components.
This code has been associated with ignition system issues and is commonly reported in vehicles with high mileage.
Moderate – Should be addressed soon to prevent engine performance issues.
Ignoring this issue could lead to further engine damage and increased emissions.
• Engine at operating temperature
• Vehicle stationary
The ignition coil for cylinder 7 is located on the engine, typically near the spark plug for that cylinder.
Q: Can I drive with a P3319 code?
A: It's not recommended to drive for long periods with this code, as it can lead to engine damage.
Q: How can I prevent ignition coil issues?
A: Regular maintenance and inspections can help prevent issues with ignition coils.
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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.