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 is a problem with the part of the car that makes the spark plugs work. It's like when a light bulb doesn't turn on because there's a problem with the switch or the wires.
The P0350 code indicates a malfunction in the ignition coil's primary or secondary circuit. This could mean there's an open circuit, a short, or a problem with the coil itself.
The ignition coil is responsible for converting the battery's low voltage to the high voltage needed to create an electric spark in the spark plugs. The P0350 code is triggered when the Engine Control Module (ECM) detects a malfunction in the ignition coil's primary or secondary circuit. This could be due to an open circuit, a short circuit, or a failure within the ignition coil.
• Check Engine Light is on
• Engine misfires
• Poor fuel economy
• Faulty ignition coil
• Damaged or corroded wiring/connectors
• Faulty ECM
Ignition Coil: A component that converts the battery's voltage to a higher voltage to create a spark in the spark plugs.
ECM: Engine Control Module, the computer that controls the engine's functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil and its wiring for damage or corrosion.
• Test the ignition coil's resistance and continuity.
• Replace the faulty ignition coil.
• Repair or replace damaged wiring/connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Ford F-150
• Toyota Camry
• Honda Accord
• Regularly inspect ignition components.
• Ensure proper maintenance of the vehicle's electrical system.
• Use high-quality ignition parts.
Engine Performance
• Avoid driving the vehicle until the issue is fixed to prevent further damage.
• Consult a professional mechanic for an accurate diagnosis.
Check with your vehicle's manufacturer for warranty coverage on ignition components.
The P0350 code has been a common issue in vehicles with electronic ignition systems, particularly as they age.
Moderate – While the vehicle may still be drivable, it's important to address the issue to avoid further engine damage.
Driving with a malfunctioning ignition system can lead to increased emissions and potential engine damage.
• Engine running
• Use of an OBD-II scanner
The ignition coil is typically located on the engine, near the spark plugs.
Q: Can I drive with a P0350 code?
A: It's not recommended to drive with this code active, as it can lead to engine damage.
Q: How do I know if my ignition coil is bad?
A: Common signs include engine misfires, poor fuel economy, and the Check Engine Light being on.
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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.