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 engine in your car is having trouble with the third cylinder, and it's not getting fuel like it should. It's like if one of your friends in a relay race suddenly stops running and doesn't get the baton.
The engine control module (ECM) has detected a misfire in cylinder number 3 and has cut off fuel to that cylinder to prevent damage.
The P1347 code indicates that the ECM has detected a misfire in cylinder number 3. When a misfire is detected, the ECM may cut off fuel to that cylinder to prevent damage to the catalytic converter and other engine components. This can be caused by issues with the ignition system, fuel system, or mechanical problems within the engine.
• Check Engine Light is on
• Rough engine idle
• Poor acceleration
• Increased fuel consumption
• Engine stalling or hesitation
• Faulty spark plug in cylinder 3
• Ignition coil failure for cylinder 3
• Fuel injector problem in cylinder 3
• Vacuum leak affecting cylinder 3
• Low engine compression in cylinder 3
ECM: Engine Control Module
Misfire: A failure of the air/fuel mixture in the cylinder to ignite properly
• Use an OBD-II scanner to confirm the P1347 code
• Inspect spark plug and ignition coil for cylinder 3
• Check fuel injector for cylinder 3
• Perform a compression test on cylinder 3
• Inspect for vacuum leaks around cylinder 3
• Replace faulty spark plug in cylinder 3
• Replace or repair ignition coil for cylinder 3
• Clean or replace fuel injector for cylinder 3
• Repair any vacuum leaks found
• Address any compression issues in cylinder 3
• OBD-II scanner
• Spark plug socket
• Compression tester
• Multimeter
• Fuel injector tester
$150 - $500
Moderate
• Toyota Camry
• Honda Accord
• Ford Focus
• Regularly replace spark plugs
• Perform routine engine maintenance
• Use high-quality fuel
Engine Performance
• Avoid driving the vehicle until repaired to prevent further damage
• Have the vehicle inspected by a professional mechanic
Check with your vehicle manufacturer for warranty coverage on engine components.
This code has been commonly reported in vehicles with high mileage or poor maintenance history.
High – Driving with a misfire can cause significant engine damage and should be addressed immediately.
Ignoring this code can lead to increased emissions and potential engine damage, which may not comply with emissions regulations.
• Engine at operating temperature
• Vehicle idling or under load
Cylinder 3 is typically located on the engine block, and its exact position depends on the engine configuration.
Q: Can I drive my car with a P1347 code?
A: It's not recommended to drive with this code as it can cause further engine damage.
Q: How can I prevent a P1347 code?
A: Regular maintenance, such as replacing spark plugs and using quality fuel, can help prevent this code.
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Fitment Required · Vehicle-fitment part
Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
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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.