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 car's computer has detected a problem with the engine in cylinder 4, causing it to stop sending fuel to that cylinder to prevent damage.
The engine's control module has detected a misfire in cylinder 4 and has cut off fuel to prevent further issues.
P1349 is a diagnostic trouble code indicating that the powertrain control module (PCM) has detected a misfire in cylinder 4. To prevent damage, the PCM has disabled fuel delivery to this cylinder. This can be due to ignition problems, fuel delivery issues, or mechanical problems within the cylinder.
• Check Engine Light is on
• Rough engine idle
• Reduced engine performance
• Poor fuel economy
• Engine hesitation or stalling
• Faulty spark plug in cylinder 4
• Defective ignition coil
• Fuel injector malfunction
• Vacuum leak
• Compression issues in cylinder 4
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
Misfire: A failure of the air/fuel mixture in the cylinder to ignite properly
• Use an OBD-II scanner to confirm the code
• Inspect spark plug and ignition coil for cylinder 4
• Check fuel injector for proper operation
• Perform a compression test on cylinder 4
• Inspect for vacuum leaks
• Replace faulty spark plug
• Replace or repair ignition coil
• Clean or replace fuel injector
• Repair vacuum leaks
• Address any mechanical issues found during compression test
• OBD-II scanner
• Spark plug socket
• Multimeter
• Compression tester
• Vacuum gauge
$150 - $500
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly replace spark plugs
• Perform routine engine maintenance
• Use high-quality fuel
Engine Performance
• Avoid driving the vehicle until repaired to prevent further damage
• Regular maintenance can prevent such issues
Check with your vehicle manufacturer for specific warranty coverage related to engine components.
This code has been associated with ignition system issues in various vehicle models over the years.
High – Driving with a misfire can cause engine damage.
Ignoring this code can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in idle or under load
Cylinder 4 is typically located on the engine block, depending on the engine layout (inline or V-type).
Q: Can I drive with a P1349 code?
A: It's not recommended, as driving with a misfire can cause engine damage.
Q: How can I prevent a misfire in cylinder 4?
A: Regular maintenance such as replacing spark plugs and using quality fuel can help prevent misfires.
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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.