It means that there is a misfire on cylinder number three. The cause could be in the ignition system (coil, plugs, plug wires), or high and low fuel pressure.
Trouble code P0303 means:Cylinder 3 misfire detected
Trouble code P0303 means:Cylinder 3 misfire detected
Trouble code P0303 means:Cylinder 3 misfire detected
Trouble code P0303 means:Cylinder 3 misfire detected
Trouble code P0303 means: Cylinder Number 3 Misfire Detected
A P0303 error code is caused by misfire on piston 3. This can come as a result of a bad spark plug, damaged wires, or even a problem with the vehicle's computer.
Depending on which tester you used to determine the code look at the teters manual
Trouble code P0303 means:Cylinder 3 misfire detected
Trouble code P0303 means:Cylinder 3 misfire detected
Trouble code P0303 means: Cylinder 3 Misfire Detected
Trouble code P0303 means: Cylinder #3 misfire detected
# 3 cylinder misfire.