CAR OBD CODES
OBD/DTC Search, e.g.P0304
CAR OBD CODES P0304
P0304 OBD Code Definition:
P0304 Cylinder 4 Misfire Detected
P0304 OBD Code Description:
OBD2 Code P0304 Definition:
A P0304 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 #4.
Symptoms
Possible sumptoms of P0304
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 P0304
A code P0304 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 P0304 error code is purely informative, if you need more useful information, please consult your technician.
B1C99 B1D22 B007E B1986 B12A8 B1985 B1830 B1710 B1654 B1652 B1167 B1089 B2485 B209F B2995 OBDII Chassis Codes
C1979 C1502 C0004 C1453 C1306 C0577 C2768 C0284 C1516 C0039 C1779 C1180 C195A C1461 C0271 OBDII Network Codes
U0468 U1005 U1189 U1170 U2005 U1025 U1262 U0313 U1184 U0161 U0072 U0311 U2516 U1087 U2024 OBDII Powertrain Codes
P1521 P21A7 P2278 P0679 P203B P0885 P1912 P0A50 P0498 P2BAE P0694 P1A09 P1206 P1652 P020D