CAR OBD CODES
OBD/DTC Search, e.g.P0303
CAR OBD CODES P0303
P0303 OBD Code Definition:
P0303 Number 3 Cylinder Misfire Detected
P0303 OBD Code Description:
OBD2 Code P0303 Definition:
A P0303 code means that the the car’s computer has detected that one of the engine’s cylinders is not firing properly. In this case it’s cylinder #3.
Symptoms
Possible sumptoms of P0303
the engine may be harder to start the engine may stumble / stumble, and/or hesitate other symptoms may also be present
Possible Causes
Possible causes of P0303
A code P0303 may mean that one or more of the following has happened: Faulty spark plug or wire Faulty coil (pack) Faulty oxygen sensor(s) Faulty fuel injector Burned exhaust valve Faulty catalytic converter(s) Running out of fuel Poor compression Defective computer
Possible Solutions
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I’ve also heard in other cases the problems were faulty fuel injectors.
Note: The information on the P0303 error code is purely informative, if you need more useful information, please consult your technician.
B1D64 B118B B1C30 B25A4 B1213 B1167 B1841 B1818 B2072 B1577 B1644 B11D1 B2594 B1584 B0103 OBDII Chassis Codes
C1826 C100F C0015 C1124 C1278 C1476 C1161 C1943 C1211 C0306 C1720 C1003 C1326 C1156 C2774 OBDII Network Codes
U101B U0508 U0132 U0092 U0035 U1237 U1034 U0039 U1005 U0187 U0243 U0479 U0538 U0179 U0199 OBDII Powertrain Codes
P1803 P1518 P0219 P050F P138F P1356 P2413 P2769 P2054 P2018 P0ABB P266E P2143 P0AD0 P1656