What causes a p0306 code on a spark plug?

All our repairs are backed by our 12-month / 12,000-mile warranty. P0306 is an OBD-II generic code that the engine control module (ECM) detected a misfire on cylinder number 6 of the engine. What causes the P0306 code? The spark plug is not firing for cylinder number 6 due to fouling or cracks in the insulation.

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.

What to do if your p0306 cylinder 6 is reset?

Now, clear the codes and see if the P0306 is reset during a lengthy test drive. If the code is reset, use your vehicle information source to search technical service bulletins (TSB) which pertain to the symptoms and code (s) in question.

How to diagnose misfire code P0300 cylinder # 6?

P0306 Cylinder #6 Misfire. Misfire is present, but no misfire codes are registered in the computer’s memory. Lack of power upon acceleration. Smell of unburned gas exiting the tail pipe. Rough idle and may stall. Cranks but does not start. Will not pass the emissions tests. Bad gas mileage.

What does the p0306 code on a Chevrolet cylinder 6 mean?

P0306 CHEVROLET Tech Notes The P0306 code means that the cylinder 6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 6.

What does the p0306 code on a Honda Accord mean?

The P0306 code means that the cylinder 6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 6. If the problem persists more tests needs to be done to diagnose problem, see “Possible Causes”.

What happens when a p0306 misfire is detected?

The system is designed in this fashion to alert the driver that an engine misfire of this degree can be harmful to the catalytic converter and other engine components. Once the misfire becomes more consistent and severe, a P0306 will be stored and constant MIL illumination will occur.

Why is code p0306 stored in OBD II?

The reason for a code P0306 being stored in your OBD II vehicle is that the powertrain control module (PCM) has detected an individual cylinder misfire. A P0306 specifically applies to the number six cylinder. Consult a reliable vehicle information source for the location of the number six cylinder for the vehicle in question.

What are the symptoms of cylinder 6 trouble code?

The spark plug wire or plug boot is leaking ignition spark to ground for cylinder number 6 from age. The valve cover is leaking oil into the spark plug holes and shorting the spark plug ignition for the number 6 cylinder. The cylinder has problems with compression being low from defective rings or valves. What are the symptoms of the P0306 code?

What is the misfire code on a check engine light?

When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we are left with a P0306 in the computer memory.

What causes a p0306-cylinder 6 misfire detected?

P0306 – Cylinder 6 Misfire Detected Repair Importance Level: 3/3 Repair Difficulty Level: 3/3 P0306 Possible Causes Faulty spark plug 6 Clogged or faulty fuel injector 6 Faulty ignition coil 6 Fuel injector 6 harness is open or shorted Fuel injector 6 circuit poor electrical connection Ignition coil 6 harness is open or shorted

What to do if your car has a p0306 code?

Use FIXD to scan your vehicle to verify P0306 is the only code present. If other codes are present, they must be addressed first. 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.

What does a p0303 fire code tell you?

A P0303 code, for example, would tell you that the No. 3 cylinder is misfiring. To figure out which cylinder is No. 3, refer to a diagram of the engine’s firing order or look for markings on the intake manifold, spark plug wires or ignition coils (if the engine has a coil-on-plug ignition system).

What does code p0301 mean on coils?

If the misfire indicates code P0301, then you’ll know that the plugs are defective. Replace the spark plugs and spark plug wires and check if the code is still present. The same applies to individual coil packs.

When to fix a p0304 spark plug socket?

P0304 should be repaired immediately. Ignoring this error could result in ignition failure, catalytic converter damage, and unsafe/dangerous conditions while operating the vehicle. Loose fitting electrical connectors and broken or disconnected vacuum hoses are often overlooked. 5/8in. Spark Plug Socket

What is the cause of code p0304?

What Is the Cause of Code P0304? 1 Faulty or worn spark plugs * 2 Faulty spark plug wires or coils * 3 Distributor failure * 4 Faulty fuel injector 5 Vacuum leak 6 Low fuel pressure 7 Camshaft sensor defective 8 Crankshaft sensor defective 9 Engine timing off 10 Leaking head gasket その他のアイテム…

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.

Where can I find the misfire code for spark plugs?

Diagnostics > By Trouble Code > P0300 P0301 P0302 P0303… People ask me about misfire codes after they’ve replaced all the spark plug wires, coil, and plugs and they still have the code.

What does a p0304 engine failure code mean?

A mechanical engine failure ; The P0304 error code indicates that the number four cylinder specifically is failing to fire. Symptoms To Look For. Any error code can be triggered by a faulty sensor.