Gm dtc p0300 00

GM has issued a service bulletin #12-06-01-001 to address a P0300 random misfire trouble code, service engine soon light on, rough running engine, cracked or oil fouled #1 or #7 spark plug. GM has determined that the positive crankcase ventilation PCV valve may pull in too much oil vapor into the engine near these two spark plugs.

Gm dtc p0300 00. DTC P0446 Evaporative Emission Vent System PerformanceHow to fix P0446 EVAP Vent system performance code on a GM or Chevy truck. This is an updated bulletin...

General Motors is launching a new My GM Rewards Card in collaboration with Marcus by Goldman Sachs and Mastercard. General Motors is launching a new My GM Rewards Card in collabora...

Nov 8, 2022 · Some common causes of code P0300 could include the following-. Unmetered air entering the engine. Defective sparkplugs or sparkplug leads. Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors. Defective coil packs on applications where one coil feeds more than one sparkplug. Results: ECM: P0446 and P0300-00 (thats the Missfire DTC) EBCM: C0561H-71 and U0101C-00 (i guess those are the DTC´s for the Stabilytrac thing) While testdriving for 1.5 hrs everything was fine, beside one short "Service Stabilytrac" Message for 2 Seconds. Thats it. I looked up the missfire history Data in the Tech2: Cylinder1: 0. …Feb 21, 2022 · P0011 definition: Intake Camshaft Timing- Over-Advanced Bank 1. Issue Severity: SEVERE – Stop driving immediately. Repair Urgency: Fix this code immediately (same-day if possible) to avoid damage to multiple internal engine components. Diagnosis: This trouble code severely impacts the drivability of your vehicle. Nov 14, 2020 ... in this video I will share with you how to pinpoint one of the causes of a P0300 DTC on a Chevy Truck...Illuminated - DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set This bulletin replaces PIP5029H. Please discard PIP5029H. Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick GM Passenger Cars and Trucks (including LCF MD) 2000 2020 Gasoline Engines Only Cadillac Chevrolet GMC Involved Region …

To diagnose the P0300 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.P0300 is a generic OBDII code that can occur with the Chevy Corvette. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire ...Subject: Front or Rear Crankshaft Oil Leak, Malfunction Indicator Lamp (MIL) Illuminated - DTC P1101 Set This bulletin replaces PIP5417C. Please discard PIP5417C. Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick Encore 2016 2019 1.4L (RPO LE2) Chevrolet Cruze 2016 2019 1.4L (RPO LE2) Equinox 2018 2020 1.5L (RPO LYX ...The numbers. Investors looked past the one-time charges that dragged down the headline numbers, and the underlying business looked strong. If you want to be a stickler for account...If it varies beyond 2 percent, the Monitor will set a P0300 code and illuminate the Check Engine Light. If there is more than a 10 percent variance, the Check Engine Light will blink or pulse in a steady manner to indicate that a harmful Catalytic Converter misfire is occurring. When diagnosing a P0300 code, it is important to record the freeze ...Aug 12, 2018 · The P0300 Chevy trouble code will trigger the service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration. P0300 Trouble Code Diagnosis- Chevy. There are many things that can cause the P0300 trouble code to trigger in your Chevy . 2. Enter the VIN in the parts catalog and go to the fuel injector rail parts section. 3. After the injector part number has been identified on the body of the injector, in the description column. For example, part number 12668390 highlighted in the table. To the left is the part number that will need to be order.

To diagnose the P0300 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.So, you are faced with diagnosing a stored a code P050D. It means that the powertrain control module (PCM) has detected a rough engine idle during cold start...A check engine light is never fun, but P0300 is the most common diagnostic trouble code (DTC) that drivers will experience. It’s quite common in GM vehicles, and also one of the most difficult codes to diagnose. But don’t worry. We’ve already broken down the meaning, causes, and symptoms for P0300, and now we’re making itThe My GM Rewards Card offers high earning potential, but it likely only makes sense if you want to redeem your points toward GM-related purchases. We may receive compensation from...

Greenwich prime meats.

The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are a common cause of multi-cylinder misfiring. If no leaks are found the next step is to replace the spark plugs. If the problem persists more tests need to be done to diagnose the problem, see 'Possible Causes'.Oct 13, 2019 ... Failed Ignition Coil due to rodents eating the wiring.The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks; intake gaskets are a common cause of multi …To diagnose the P0300 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.To diagnose the P0300 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

The My GM Rewards Card offers high earning potential, but it likely only makes sense if you want to redeem your points toward GM-related purchases. We may receive compensation from...Random or Multiple Cylinder Misfire Detected. Code P0300 means that one or more engine cylinders are misfiring. An engine misfire occurs when the amount of fuel burning in the cylinder is insufficient. Proper fuel combustion is crucial for the optimal functioning of the engine—the energy released from the burning fuel is what powers up the ...P0300コードは「ランダムまたは複数のシリンダーの失火が検出されました」を示します。. この診断トラブル コード (DTC) は、車のコンピューターがランダムまたは複数気筒のエンジン故障を検出したことを意味します。. P0300 に加えて、おそらく P0301 から ...P0300 Code. The P0300 Chevy engine code indicates a misfiring cylinder problem in your car. The engine misfires when not enough gasoline is burnt or when the spark plug is damaged. Furthermore, in extreme conditions, it can damage your car’s catalytic converter. “Random or Multiple Cylinder Misfire Detected” is the meaning of the …P0302 DTC means that there’s an engine misfire in cylinder 2. The Powertrain Control Module (PCM) detects that a misfire is occurring in the 2nd cylinder in the car motor, thereby alerting the engine to set this trouble code. It’s a generic code, applying to all OBD-II equipped models. While the P0302 trouble code might be considered ...January 30, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Chevy Monte Carlo. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring).P0016 definition: The correlation of the camshaft and crankshaft positions on bank 1 is incorrect based on the intake camshaft position sensor. Repair Urgency: Fix this code immediately (same day if possible) to avoid internal engine damage. Diagnosis: This trouble code can cause the vehicle to be hard to start and run rough. In some cases, the ... Common fix for P0300; What is P0300? P0300 is a diagnostic trouble code (DTC) that indicates a random or multiple misfires in the engine. This means that one or more cylinders in your engine are not firing properly, which can cause several issues, including reduced performance, poor fuel economy, and increased emissions. P0300 Symptoms 2013-2015 CX-5 ( SKYACTIV 2.0L M/T) vehicles with VINs lower than JM3KE******552473 (produced before November 12, 2014) Check Engine Light ON with DTC P0300:00, P0301:00, P0302:00, P0303:00 and/or P0304:00 stored in memory and accompanied with an increased engine oil level.Reviews, rates, fees, and rewards details for The My GM Rewards Card™. Compare to other cards and apply online in seconds Excellent Credit, Good Credit $0 Earn 15,000 bonus points ...Subject: Front or Rear Crankshaft Oil Leak, Malfunction Indicator Lamp (MIL) Illuminated - DTC P1101 Set This bulletin replaces PIP5417C. Please discard PIP5417C. Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick Encore 2016 2019 1.4L (RPO LE2) Chevrolet Cruze 2016 2019 1.4L (RPO LE2) Equinox 2018 2020 1.5L (RPO LYX ...

2. Enter the VIN in the parts catalog and go to the fuel injector rail parts section. 3. After the injector part number has been identified on the body of the injector, in the description column. For example, part number 12668390 highlighted in the table. To the left is the part number that will need to be order.

January 30, 2023 by Jason. P0300 is a generic OBDII code that can occur with the GMC Acadia. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring).The Diagnostic Trouble Code (DTC) will be set when the ECM detects an open circuit in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded OFF for greater than 5 s. P0036 GMC Code - HO2S Heater Control Circuit Bank 1 Sensor 2The P0300 code is a generic diagnostic trouble code (DTC) that indicates a random misfire in the engine. For GMC Sierra 1500 owners, this code means that one or more cylinders in the engine are not firing properly. This can lead to issues such as poor fuel efficiency, rough idle, loss of power, and potential damage to the catalytic converter.P0300 is a generic OBDII code that can occur with the Chevy Tahoe. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire ...Summary. DTC P2097 stands for “Post Catalyst Fuel Trim System Too Rich Bank 1”. This code is triggered when the downstream bank 1 oxygen sensor registers a rich condition. The most common symptoms of a P2097 include a lit check engine light, poor engine performance, and a reduced fuel economy. Contentshide.Diagnostic trouble codes (or fault codes) are obd2 codes that are stored by the on-board computer diagnostic system. ... DTC from P0300 to P0399 (Ignition System Control and Misfire Detection): P0300 Random/Multiple Cylinder Misfire Detected; ... P1441 GMC EVAP System Flow During Non-Purge Condition; P1441 INFINITI Evaporative Emission Control ...The Diagnostic Trouble Code (DTC) will be set when the ECM detects an open circuit in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded OFF for greater than 5 s. P0036 GMC Code - HO2S Heater Control Circuit Bank 1 Sensor 2P0300 is a generic OBDII code that can occur with the Chevy Equinox. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire ...Failed or Faulty Oxygen Sensor (bank 1, sensor 1) Sticking/Plugged or Failed Fuel Injector. Low Fuel Pressure (possible plugged/dirty fuel filter!) Exhaust Leak between Engine and first Oxygen Sensor. Possible Solutions: A lot of Times, Cleaning the MAF Sensor and Finding/Fixing Vacuum Leaks fixes the Problem.To diagnose the P0300 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

Otzdarva twitter.

Ipac nissan san antonio texas.

Jun 19, 2015 · GM has issued a service bulletin #12-06-01-001 to address a P0300 random misfire trouble code, service engine soon light on, rough running engine, cracked or oil fouled #1 or #7 spark plug. GM has determined that the positive crankcase ventilation PCV valve may pull in too much oil vapor into the engine near these two spark plugs. P2270 is a generic OBD-II code that appears with many manufacturers. It shows that the O2 sensor signal is stuck in a lean condition. The faulty reading is coming from the second O2 sensor on bank 1. This is known as the downstream oxygen sensor. This sensor is reading too much oxygen in the exhaust. It could also be providing a false …A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder (s) is/are mis-firing, nor why.Feb 1, 2009 ... ... P0300, Random ... A P0300 OBD DTC code indicates a random or multiple misfire. ... I've seen other GM cars have similar problems that wouldn't ...P0000 – P0099 (Fuel and air metering and auxiliary emission control) P0000. No fault. -. P0001. Fuel volume regulator control -circuit open. Wiring, regulator control solenoid. P0002. Fuel volume regulator control -circuit range/performance.OBD II fault code P0300 is a generic trouble code that is defined as, “P0300 – Random/Multiple Cylinder (s) – Misfire Detected”, and is set when the PCM (Powertrain Control Module) detects persistent misfires on multiple cylinders that occur in a random pattern under some, or all engine speeds and/or loads.GMC Sierra 1500 (New Model) 2019 2019 Equipped with 5.3L L82, 5.3L L84, 6.2L L87, 4.3L LV3, 2.7L L3B, or ... When checking for DTC's, any combination of the following codes may be found: C15AA ... P0223 P0300 P0335 P0340 …P0300 is a generic OBDII code that can occur with the Chevy Camaro. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, the ...Reviews, rates, fees, and rewards details for The GM Business Card™. Compare to other cards and apply online in seconds Excellent Credit, Good Credit $0 Get the business card that ...January 31, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Chevy Impala. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring).There’s a lot to be optimistic about in the Consumer Goods sector as 3 analysts just weighed in on General Motors (GM – Research Report), ... There’s a lot to be optimistic a...Here is what I am thinking right now. Replace Intake Manifold Gasket (Again with green gasket) Crankshaft Position Sensor (However heard truck wouldnt run at all if it was bad or would throw a code) Possible bad 02 sensor (However no lean codes or bad 02 sensor codes) Possible valve problems. Check engine compression on those two cylinders. ….

January 30, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Chevy Colorado. This code indicates that your truck’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring).Trouble code P0446 stands for an Evaporative Emission Control System (EVAP) Vent Control Circuit Malfunction. This code means that the car’s computer detected trouble with the EVAP system vent valve’s function. This vent valve is also known as the purge valve. The computer is responsible for monitoring and controlling the purge valve.The P0420 trouble code is more common in some car models than others. Certain car models are known to have a problem with this diagnostic trouble code. Here is a list of the most common causes by car brands. Remember that these are only general guidelines, and you should make a diagnosis before replacing any parts. 1. ChevroletSpecial note on trouble code P0300 and GM vehicles: While DTC P0300 is a generic code that affects all OBD II compliant vehicles, the most common causes of this code sometimes vary between most vehicle makes. This article will therefore deal with code P0300 as it applies specifically to GM vehicles.There are several potential causes for the P0300 code in a GMC Sierra. These can include issues with the ignition system, such as spark plugs, ignition coils, or spark plug wires. Fuel delivery problems, like a clogged fuel injector or low fuel pressure, can also lead to a misfire. Additionally, vacuum leaks, a faulty EGR valve, or even a ...Related DTC Discussions Register now to ask a question (free) Chevy p3400 deactivation soliniods 2012 chevy pickup 1500 5.3 engine i have a code p3400 and i cant find the problem ive replaced the cyl deactivation pack and the mass air flow meter plugs wires intake casket oil pressure is at 30lbs after it warms up and in gear after driving for ...Feb 1, 2009 ... ... P0300, Random ... A P0300 OBD DTC code indicates a random or multiple misfire. ... I've seen other GM cars have similar problems that wouldn't ...P0014 indicates that the camshaft position sensors detected an incorrect camshaft timing on camshaft B on bank 1. In most cases, this means that there is a problem with your variable camshaft timing control, but it can also mean that there is a problem with the camshaft timing. The timing between the camshafts and crankshaft must be correct … Gm dtc p0300 00, In this article, we delve into the mysteries behind this fault code and provide you with a creative solution to get your engine purring like a contented feline once again. Are you tired of searching for answers to your GM Chevrolet Cadillac Buick P0300 00 code woes? Look no further! In this article, we delve into the mysteries behind this fault ..., Sticker prices of some used cars from General Motors Co (NYSE: GM), Ford Motor Co (NYSE: F), and other legacy rivals... Sticker prices of some used ca..., GMC Sierra 1500 (New Model) 2019 2019 Equipped with 5.3L L82, 5.3L L84, 6.2L L87, 4.3L LV3, 2.7L L3B, or ... When checking for DTC's, any combination of the following codes may be found: C15AA ... P0223 P0300 P0335 P0340 …, The P0300 code for a GMC Yukon indicates a random misfire in one or more cylinders of the engine. This code signifies that the powertrain control module (PCM) has detected an uneven combustion event in multiple cylinders, leading to a rough-running engine. The P0300 code can be caused by various factors, such as ignition system …, The P0106 DTC means that the Manifold Absolute Pressure/BARO Sensor Range/Performance has discovered a problem. This code occurs if the powertrain control module (PCM) determines the MAP/BARO sensor readings are erratic and incorrect. The MAP sensor signal should be 1 to 4.5 volts, heading back to the PCM, depending on what load the engine is ..., GM is launching its own OnStar Insurance based on telematics and available to drivers of all brands of car. By clicking "TRY IT", I agree to receive newsletters and promotions from..., The P0300 code specifically applies to the Chevrolet Silverado and refers to engine misfires. When this code is triggered, it indicates that the engine has detected random misfires in multiple cylinders. These misfires can result in poor engine performance, reduced fuel efficiency, and potential damage to other engine components., GM is launching its own OnStar Insurance based on telematics and available to drivers of all brands of car. By clicking "TRY IT", I agree to receive newsletters and promotions from..., The P0300 code for a GMC Yukon indicates a random misfire in one or more cylinders of the engine. This code signifies that the powertrain control module (PCM) has detected an uneven combustion event in multiple cylinders, leading to a rough-running engine. The P0300 code can be caused by various factors, such as ignition system …, The P0300 code is a generic diagnostic trouble code (DTC) that indicates a random misfire in the engine. For GMC Sierra 1500 owners, this code means that one or more cylinders in the engine are not firing properly. This can lead to issues such as poor fuel efficiency, rough idle, loss of power, and potential damage to the catalytic converter., What Does Code P0300 Mean? OBD II fault code P0300 is a generic code that is defined as “Cylinder Misfire Detected Random Cylinders”, and is set when the …, The video focuses on the basic GMC specific diagnostic error code.Contents:0:21 Basic DTC analysis according to OBD2 protocol standard.1:48 Insight into prog..., 2. Enter the VIN in the parts catalog and go to the fuel injector rail parts section. 3. After the injector part number has been identified on the body of the injector, in the description column. For example, part number 12668390 highlighted in the table. To the left is the part number that will need to be order. , The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks; intake gaskets are a common cause of multi-cylinder misfiring. If no leak is found, the next step is to replace the spark plugs. If the problem persists, more tests need to be done to diagnose the problem, see "Possible …, The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are a common cause of multi-cylinder misfiring. If no leak is found the next step is to replace the spark plugs. If the problem persists more tests need to be done to diagnose the problem, see "Possible …, Engine Wiring Harness Ground Terminal Location (1999-2006 Full Size Pickup and/or Utility Trucks) Remove either the nut or bolt securing the main engine wiring harness ground terminal (G103) to the right cylinder head. Refer to the above illustration to determine where the ground is located on the vehicle (1)., The P0106 DTC means that the Manifold Absolute Pressure/BARO Sensor Range/Performance has discovered a problem. This code occurs if the powertrain control module (PCM) determines the MAP/BARO sensor readings are erratic and incorrect. The MAP sensor signal should be 1 to 4.5 volts, heading back to the PCM, depending on what load the engine is ..., The great American sports car is going electric. GM shared the news this morning, and released the first images of the upcoming electric Chevrolet Corvette. The great American spor..., So, you are faced with diagnosing a stored a code P050D. It means that the powertrain control module (PCM) has detected a rough engine idle during cold start..., Updated: January 7, 2023. The P0300 trouble code appears in your engine control unit if repetitive misfires occur inside any of your car’s cylinders. There could be many different things causing the car engine to misfire, and in this article, you will find everything you need to know about this code., January 30, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Chevy Colorado. This code indicates that your truck’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring)., P0300: causes, symptoms and repairs. P0300 means that misfires have been detected in one or more engine cylinders. It may be accompanied by similar DTCs such as P0302, P0303 and P0304. In these cases, the last number of the code corresponds to the number of the cylinder that is misfiring. Misfires will increase or reduce the RPM., Mar 26, 2024 · The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks; intake gaskets are a common cause of multi-cylinder misfiring. If no leak is found, the next step is to replace the spark plugs. If the problem persists, more tests need to be done to diagnose the problem, see "Possible Causes". , Tech Notes. Condition: A vehicle may have a concern about a DTC P050D setting along with a P0300 after a cold startup. White smoke and/or coolant odor may come from the exhaust for an extended period of time at a cold start as well. It may also Run rough when warm, with a slight knock, no codes set. Cause: Coolant getting into the …, Truck runs fine with no drivability issues. -CEL came on last week, bought the $20 Scan Tool theholycow posted. Also have a Kiwi coming in in a few days. -Scanned my truck this morning, got the following codes: P0300 - Multiple Cylinder Misfire. P0442 - Evap System Leak. Similarities I see between the two are an Evap System Leak & EGR …, The P0420 trouble code is more common in some car models than others. Certain car models are known to have a problem with this diagnostic trouble code. Here is a list of the most common causes by car brands. Remember that these are only general guidelines, and you should make a diagnosis before replacing any parts. 1. Chevrolet, Aug 29, 2020 ... In this tutorial, I'll explain what a P0300: Random Cylinder Misfire trouble code means. I'll also talk about some of the tests you can ..., In this video we discover common causes for the codes P0300 and P0200 and learn a lesson about being more methodical in diagnosing these issues before cleari..., What does this mean? Code Tech Notes. The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks; intake gaskets are a common cause of multi-cylinder misfiring. If no leak is found, the next step is to replace the spark plugs., Trouble code P0446 stands for an Evaporative Emission Control System (EVAP) Vent Control Circuit Malfunction. This code means that the car’s computer detected trouble with the EVAP system vent valve’s function. This vent valve is also known as the purge valve. The computer is responsible for monitoring and controlling the purge valve., Discover the common causes of the P0300 diagnostic trouble code and learn how to troubleshoot a random misfire in your engine with AutoZone., P0300: causes, symptoms and repairs. P0300 means that misfires have been detected in one or more engine cylinders. It may be accompanied by similar DTCs such as P0302, P0303 and P0304. In these cases, the last number of the code corresponds to the number of the cylinder that is misfiring. Misfires will increase or reduce the RPM., You may find DTC P0300 (Engine Misfire Detected) set along with a misfire and low compression in one or more cylinders. Figure 2: Examples of light vertical marks …