What should I do if I get an error code p0304?
Replace any damaged ignition components during your scheduled regular maintenance. Normally, it is the distributor cap, park plugs, wires and rotor (if applicable) that needs replacement to fix this error code. If all seems to be in good shape, check the coil (coil packs).
What is the error code for cylinder 4?
Error Code P0304 is a common error code which signifies a misfire issue with the engine’s cylinder, particularly the cylinder #4.
What does it mean when PCM says cylinder 4 four misfire?
If there’s more than 10% in one of the cylinder bank and not on the other, then that means there’s a vacuum leak, defect or crack on the bank’s intake manifold. You will know what causes the PCM to do this compensation by checking the Fuel Trim “numbers” within the full range of operating conditions.
What does p0304 mean on a spark plug?
If your vehicle is equipped with individual coil packs instead of spark plug wires, start by removing the cylinder 4 coil and swapping it with the cylinder number 1 coil. If the misfire moved to cylinder number 1 (P0301), then you have determined that the coil pack is faulty and needs replacement.
What causes Mazda CX-9 p0304 trouble code?
There are quite a few things that can cause the P0304 trouble code to trigger the Mazda CX-9. Here are the most common problems that will throw the code. They are presented somewhat in order from most to least likely to be causing the code: Bad Spark Plugs – Spark plugs are one of the most common causes of P0304.
Error Code P0304 is a common error code which signifies a misfire issue with the engine’s cylinder, particularly the cylinder #4.
What causes cylinder 4 on Mazda CX-9 to misfire?
The engine is also not firing all of the fuel, so raw fuel is also passing through Cylinder 4 into the exhaust. Mileage may suffer as well when your CX-9 has P0304 as well. P0304 is a cylinder specific misfire code, which means that Cylinder 4 is misfiring and causing the code.