

Here’s how to tell if your plug wires are bad (video).

There are quite a few things that can cause the P0303 trouble code to trigger the Hyundai Santa Fe. P0303 Trouble Code Diagnosis- Hyundai Santa Fe

You may smell raw gas coming from the tailpipe.Fuel mileage will suffer (often not drastically).The vehicle may produce excess vibration, especially at lower RPM.It depends on how serious the misfire is, and how many cylinders the engine has. The vehicle itself may begin to run rough.The P0303 trouble code will trigger the Santa Fe’s service engine soon light.An important thing to understand when finding the location of cylinder 3 is that it’s going to be the 3’rd cylinder in the firing order of the vehicle, and not the 3’rd cylinder that you might see when looking at the engine. P0303 is a cylinder specific misfire code, which means that Cylinder 3 is misfiring and causing the code. Mileage may suffer as well when your Santa Fe has P0303. The engine is also not firing all of the fuel, so raw fuel is also passing through cylinder 3 into the exhaust. Driving with a misfire can damage the vehicle’s catalytic converter. Unlike a lot of the OBDII codes, this code has to do directly with engine combustion. These particular codes indicate that there is a misfire in one of the other cylinder’s as well.įixing P0303 should be considered a high priority. It will often be accompanied by codes P0301, P0302, etc…. The nice thing about P0303 is that it’s a cylinder specific trouble code, which makes diagnosing the problems simpler than P0300, which means that the cylinders are randomly misfiring. P0303 should not be ignored, and can be a threat to the drivability the Hyundai Santa Fe. P0303 is a relatively common Hyundai Santa Fe trouble code.
