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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...

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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 (https://www.yourmechanic.com/services/air-fuel-ratio-sensor-replacement). The P0300 code however...

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...

Car shakes when idling

I know these vehicle symptoms all too well. If your GMC Yukon runs better after it has warmed up then it is likely that it is experiencing a vacuum leak in the intake manifold gaskets. It is not uncommon for...

Why do i keep getting the po300 code after replacin plugs,wire,coil packs and cleaning throttle body. i have checked fuel pressure

P0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker) 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...

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 (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement) relearned or have the sensor replaced. Also the catalytic converter (https://www.yourmechanic.com/services/catalytic-converter-replacement) could be partially clogged. If everything is working properly, then it is possible that some intake bolts could have...

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 (https://www.obd-codes.com/p2196) and P2198 (https://www.obd-codes.com/p2198) codes to...

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 (https://www.yourmechanic.com/article/p0301-obd-ii-trouble-code-cylinder-1-misfire-detected-by-jamahl-walker) and P0302 (https://www.yourmechanic.com/article/p0302-obd-ii-trouble-code-cylinder-2-misfire-detected-by-jamahl-walker) are directly related to cylinder 1 and cylinder 2. The code P0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker) means that there...

code po300

Diagnostic Trouble Code P0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker) 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...

P0300, P0303, P1313, and P1314 codes are read on the scanner.

Hi there. The codes p0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker) and p0303 (https://www.yourmechanic.com/article/p0303-obd-ii-trouble-code-cylinder-3-misfire-detected-by-spencer-clayton_2) 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 (http://obdii.pro/en/code/P1313) means that...

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 (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-variable-valve-timing-vvt-solenoid). If you replace the second bank solenoid, it may improve your issue, but...

Random misfires

Hello. There are several possibilities that could explain why you are having this problem. One possibility is that you could have one or more faulty fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement), or the fuel injector wiring is damaged. Another possibility is that one...

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 (https://www.yourmechanic.com/article/p0152-obd-ii-trouble-code-o2-sensor-circuit-high-voltage-bank-2-sensor-1-by-jay-safford) sets if the oxygen sensor (bank 2 sensor 1) is shorted, the wiring to the sensor...

Car misfiring.

Having your code is a great asset in helping us narrow down the information on the issue your Isuzu Trooper is experiencing! When you notice random misfires in your vehicle, this means that the engine is detecting misfires in two...

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 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker) and P0301 (https://www.yourmechanic.com/article/p0301-obd-ii-trouble-code-cylinder-1-misfire-detected-by-jamahl-walker) are coming up for a misfire on cylinder number 1. Check the cylinder for spark, fuel, and air. Check the spark plug (https://www.yourmechanic.com/services/spark-plugs-replacement) and make sure that it is firing. The spark plug...

Why is it still misfiring?

Hi there. Check the Exhaust Gas Recirculation (https://www.yourmechanic.com/services/exhaust-gas-recirculation-egr-valve-replacement) 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...

When I speed up my service engine light flashes.

Hi there. If you engine is having a P0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker) 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...

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...

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...

Misfire codes and no-start. What could it be?

Fault codes for P0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker), P0301 (https://www.yourmechanic.com/article/p0301-obd-ii-trouble-code-cylinder-1-misfire-detected-by-jamahl-walker), P0302 (https://www.yourmechanic.com/article/p0302-obd-ii-trouble-code-cylinder-2-misfire-detected-by-jamahl-walker), 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...

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 (https://www.yourmechanic.com/services/engine-is-misfiring-inspection). This random misfire does not point to any one cylinder misfire and indicates that the fuel may be...

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