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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 will have 4-6 cylinders. Each cylinder will fire a spark plug, one after another, in a smooth...

Related questions

Question
Car hesitating on acceleration.
Thanks for writing in about your Mazda 6. You need to make sure that the mass airflow sensor is not getting contaminated by an oil type air filter. If it is, replace the air filter with clean paper type one...
Question
SES light on, car misfiring
Hello. When multiple codes are recorded, such as in your case, generally the first code is the one to look at. However, the FSM for your vehicle will state which code to start with diagnostics. The reason for this is...
Question
Found out 1st cylinder in car has no compression....what are my options?
The first thing you have to do is confirm such a diagnosis by getting a second opinion. It is unusual for three cylinders to be perfectly normal and one to have "no" compression. Nevertheless, it is possible. A cylinder...
Question
What is the major problem in my car
Hello. When you have this many codes you either have an issue with the voltage system in the vehicle being low due to a bad connection, a battery that is failing, or a faulty alternator. It can also be...
Question
Car idles and multiple trouble codes are triggered
Hi there. If this vehicle is having an idle concern, I have to ask if you may be having a stumble or stall issue when coming to a stop. If so, your vehicle may be covered under a special...
Question
Engine Light/ Maintenance Required/ TCS Light on
All these codes point to engine misfires. You should pull the spark plug wires to see if oil is on the spark plug wires causing the misfire. You would need to replace the valve cover gaskets and spark plug tube...
Question
Starting problem
At 180.000 miles, it could be just about anything. The P0161 and P0140 codes are oxygen sensor codes, and probably don't have anything to do with the starting issue, though you should have that investigated. The P0300 code however is...
Question
cylinder misfire
There seems to be a variety of symptoms going on at the same time. Addressing the ticking issue, it could be your lifters, and it could also be your fuel injectors. This could be part of the problem when it...
Question
Need to know what to do with these codes generated
All the generated codes will need further inspection from a mechanic. The P0300, P0301, and P0305 are all misfires in the engine and could also cause some of the additional codes. You will need to have a diagnostics done and...
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,...

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