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Discover the common causes of the P0304 diagnostic trouble code and learn how to troubleshoot a misfire in cylinder 4 of your engine.
The P0304 code means that the engine control module has detected a misfire in cylinder #4 that needs your attention. Misfires in a car engine can be caused by a failing spark, low compression, or fuel delivery problems.
This code indicates a misfire in cylinder #4, a common occurrence as engines accumulate miles. Read on to learn more about DTC P0304, what causes it, how to fix it, and whether you can continue driving in the meantime.
DTC P0304 indicates that a misfire has been detected in cylinder #4. Several problem areas can be at fault, including a bad spark plug or spark plug wires, a damaged ignition coil, or a vacuum leak. Cost: $50–$2,117, based on the problem, with models from Ford, Toyota and Chevrolet most at risk.
When your car hits a bump with a P0304 code, signaling a misfire in cylinder 4, it's clear the engine's smooth performance is off-key. This issue can throw off your car's harmony, but there's no need to stress. By diving into what causes this misfire and how to fix it, you can get your engine humming beautifully again.
Symptoms of a misfire in cylinder 4, associated with the P0304 code, often include rough idling, reduced fuel efficiency, and a noticeable lack of power. The Check Engine light will also illuminate as a primary warning signal.
When a vehicle's onboard diagnostic system detects a misfire in cylinder 4, it means that the engine is not running smoothly due to a lack of combustion in that specific cylinder. This issue can lead to poor fuel efficiency, reduced power output, rough idling, and potentially cause damage to the catalytic converter over time.
A P0304 diagnostic trouble code means the powertrain control module has detected a misfire on cylinder four. Engine misfire occurs when the engine combustion process is compromised in a given, multiple, or random cylinder.
OBD-II diagnostic trouble code p0304 means "Cylinder 4 Misfire Detected". This means your cars engine combustion reaction isn't correct in Cylinder 4. It hasn't fired at regular intervals which alerts your cars powertrain control module (PCM).
The P0304 code specifically indicates the misfire is occurring on cylinder 4, as indicated by the last digit in the code; P0302 would refer to a misfire on cylinder 2, for instance. On most...