What does a misfire on cylinder 6 mean?
A misfire is just what it sounds like; a cylinder that is not firing as it should. The P0306 code is caused by a misfire on the number six cylinder.
What is the trouble code for cylinder 6?
P0306 is a diagnostic trouble code (DTC) for “Cylinder 6 Misfire Detected”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00.
How can I tell if my car is having a misfire?
Check for loose connectors at the ignition coils or for damaged wiring (specifically cylinder 6). Look for loose engine ground wires as well. These can cause random misfire conditions. Tighten or connect where necessary. Check the condition of your spark plugs and spark plug wires.
What causes a misfire on a fuel pump?
When you encounter a single cylinder misfire, the causes of systemic misfires such as: fuel pumps, timing problems, EGR valve leaks, or crankshaft position sensors are less likely. Individual spark plugs, fuel injectors and valves should be carefully examined for the cylinder. For companion cylinders, the cylinder noted by the PCM may test fine.
What causes engine misfire code?
Another common cause would be a fuel delivery issue causing the engine to misfire causing a P0300 code (or any misfire related code) to be stored in the computer. It can be a lack of fuel or too much fuel.
What causes a cylinder to misfire?
Another reason a cylinder may misfire is due to a loss of spark . This can be something that stops coil voltage from hopping the gap at the end of the spark plug, such as worn out or corroding parts. Damaged, worn, or bad spark plugs, or a weak ignition coil can cause a loss of spark, and therefore, a misfiring cylinder.
How do you fix an engine misfire?
Put the spark plug wire back on and start the engine. If the engine continues to misfire, shut off the engine. Pull the spark plug wire off the engine and discard it. Replace the spark plug wire with a new one. Start the engine. If the engine continues to misfire, the problem probably lies with the fuel delivery system.
What does a misfire monitor on a car do?
The misfire monitor is a “continuous” monitor; it is always checking the crankshaft position sensor for a misfire. It is important to note that the misfire monitor is very reliant on the crankshaft position sensor signal. A faulty crankshaft position sensor will misdiagnose misfires!
P0306 indicates that cylinder number 6 is experiencing misfires. A misfire occurs when an insufficient amount of fuel is burning in a cylinder. A misfire from one or more cylinders can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure.
How much would it cost to fix a misfiring cylinder?
How much does a cylinder misfire repair cost?
| What May Cause the Engine Misfire | Average Estimate |
|---|---|
| Carbon or oil-fouled spark plugs | $100 to $250, depending on the costs of the plugs and local labor rates |
| Faulty ignition coil | $150 to $250 |
| Fuel injector | $275 to $400 |
| Vacuum leak | $200 to $800 |
What to do if your spark plug says p0306?
You can do the same test with the spark plug, i.e., move cylinder 6 plug to say cylinder 3 and if the misfire is now P0303 then the plugs are at fault. Replace spark plugs and spark plug wires/ignition coil packs if needed and recheck for misfires.
What is the OBD code for cylinder 6?
P0306 is an OBD-II generic code that the engine control module (ECM) detected a misfire on cylinder number 6 of the engine.
How to clear OBD codes on p0306 cylinder 6?
With all of the above listed issues rectified, connect the scanner to the vehicle diagnostic port and retrieve all stored codes and freeze frame data. I like to write this information down as it can be helpful later. Now, clear the codes and see if the P0306 is reset during a lengthy test drive.
What to do if your engine light comes on after changing spark plugs?
Or you might have left a wire harness unplugged somewhere. check all harness connections that you touched during the install. also, get a code reader or have autozone or some other parts store pull codes for you to see why the light is on. otherwise, take it to your dealer and they’ll take care of it. You could reset it and see if it comes back on.