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P0300

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P0300 OBD-II Trouble Code: Random/Multiple Cylinder Misfire Detected
P0300 code definition Random/multiple cylinder misfire detected What the P0300 code means Most vehicles...

Related questions

Question
I have an intermittent misfire - 2002 Pontiac Grand Prix
Hi and thanks for contacting YourMechanic. The EGR can cause a misfire if it is stuck open when the engine is cold or running at a lower speed. The EGR replaces some of the air with burnt fuel to help...
Question
P0300 code random misfire code
Hi. Several components could cause this problem - old, failing plug wires, old plugs with wide gaps, worn or corroded distributor cap or rotor contacts, failing distributor pickup coil issues, or failing ignition coil packs. Diagnosis with proper electrical testing...
Question
Misfire and P0420
Hello - the P0420 and the inconsistent waveform for the post-cat O2 sensor might be related to your failing intake manifold gasket issue. If tiny droplets of coolant are being sucked into the engine - one failure mode for this...
Question
Loss of power - 2006 Infiniti G35
Hi and thanks for contacting YourMechanic. Since you are getting different sensors acting up, check all of the connections to all of the sensors and make sure that there is no missing bolts. There could be a vacuum leak causing...
Question
My Hummer shows code P0300 after getting gas
You may have got contaminated fuel from the gas station. The code P0300 indicates you are getting a random engine misfire. This random misfire does not point to any one cylinder misfire and indicates that the fuel may be contaminated...
Question
Idle Problem/Engine Misfire Code P0300 P0301 P0303
Hi there. Check the spark plugs and fuel injectors for cylinder 1 and cylinder 3. Both cylinders are misfiring. If the plugs are good and the fuel injectors are firing, then there could be a problem with the internals of...
Question
VVT (variable valve timing) Solenoid and Check Engine Light codes P0300 and P0011
Hi there. Through your research you probably discovered that there are multiple causes of a rough idle and the Check Engine Light beyond the VVT solenoid. If you replace the second bank solenoid, it may improve your issue, but...
Question
code po300
Diagnostic Trouble Code P0300 can set due to spark plugs that are damaged or worn; spark plug wires and/or coils that are damaged or worn; fuel injectors that are defective; EGR valves or tubes that are clogged; ignition timing that...
Question
Check engine light
The random shake is probably due to the misfires that are implicit in the Codes that you have supplied. Diagnostic Trouble Code P0152 sets if the oxygen sensor (bank 2 sensor 1) is shorted, the wiring to the sensor is...
Question
P0300, P0303, P1313, and P1314 codes are read on the scanner.
Hi there. The codes p0300 and p0303 are for the engine having a misfire. P0300 is for a random misfire where p0303 says that cylinder 3 had a misfire all the time. The code p1314 means that the catalytic converter...
Question
Misfire codes and no-start. What could it be?
Fault codes for P0300, P0301, P0302, etc. indicate misfires. P0301 would indicate cylinder #1 misfiring, P0302 would indicate cylinder #2 misfiring,etc. Code P2159 has to do with the VTEC system malfunction. If all this started after the timing belt replacement,...
Question
Why do i keep getting the po300 code after replacin plugs,wire,coil packs and cleaning throttle body. i have checked fuel pressure
P0300 signifies that there are random misfires. Consequently, there is usually a "global" cause and there are quite a few such causes including: fuel injectors that are defective, EGR valves or tubes that are clogged, ignition timing that is off,...
Question
Periodically vehicle runs rough at idle.
Hi there. Most of the codes that are coming on are for a misfire on cylinder number 3. Check the spark plug and wire on cylinder 3 and see if you are getting a good spark. Then check the fuel...
Question
P0201 p0300 p0301 p0302 check engine light flashing. Good place to start?
Hello and thanks for your question. There is a misfire detected between cylinder 1 and cylinder 2. The codes P0301 and P0302 are directly related to cylinder 1 and cylinder 2. The code P0300 means that there is a random...
Question
P0300 and P0305. Pending: P0304, P0306, P0171, P0174, P2196, P2198
Hi there. The issue that maybe happening is the are fuel injectors that are not firing and there is a vacuum leak on the engine. Possible multiple sensors are not working causing the P2196 and P2198 codes to appear. For...
Question
Why is it still misfiring?
Hi there. Check the Exhaust Gas Recirculation valve on the engine. It seems to be sticking on when the engine is running at low idle and causing a misfire as the old exhaust that is burnt is reentering the engine....
Question
When I speed up my service engine light flashes.
Hi there. If you engine is having a P0300 code for a random misfire, check the camshaft position sensor for any moisture and if the harness has any broken wires. If the sensor looks to be good, then remove the...
Question
Have already changed plugs, plug wires, and ignition coils, but the engine still wants to stall and shake a lot.
You may need to have you crankshaft position sensor relearned or have the sensor replaced. Also the catalytic converter could be partially clogged. If everything is working properly, then it is possible that some intake bolts could have...
Question
My Lincoln ls 2004 has 9 codes at onece
Hi there. Your vehicle is in a lean mixture state. The fuel system is not supplying enough fuel to the engine. Check the fuel pump to see if its working by putting on a fuel pressure hose on the fuel...
Question
I have Pontiac G6, it shakes when idle. Usually when I drive and stops on signal. I read some code and it shows P0300 and P0301.
The codes P0300 and P0301 are coming up for a misfire on cylinder number 1. Check the cylinder for spark, fuel, and air. Check the spark plug and make sure that it is firing. The spark plug wire could have...

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