P0300 chevy tahoe 2007

This page is meant to help you troubleshoot the Chevy Tahoe P0420 trouble code. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table

Welcome back! Please like and subscribe to help me make more videos! Today we are going over misfire causes, diagnosis, and remedies. This is a lesson that I...Mileage: 176,665 miles MPG: 14 city / 20 hwy Color: White Body Style: SUV Engine: 8 Cyl 5.3 L Transmission: Automatic. Description: Used 2007 Chevrolet Tahoe LS with Rear-Wheel Drive, Roof Rack, Keyless Entry, Running Boards, Alloy Wheels, Third Row Seating, Satellite Radio, and Side Airbags. More.The P0131 code is an OBD-II diagnostic trouble code that indicates low voltage in the Chevy Tahoe's Oxygen (O2) sensor circuit for Bank 1, Sensor 1 (B1S1). This sensor plays a crucial role in maintaining optimal engine performance by detecting the air-fuel ratio in the exhaust, then sending this data to the Tahoe's engine control.August 12, 2018 by Jason. P0300 is one of the most common OBDII codes that occur in Chevy vehicles. It stands for: P0300: Random Multiple Misfire Detected. P0300 is …READ FIRST: GM has very common issues with their V8 engines. Mainly the 5.3L engines with AFM (active fuel management). The AFM lifters tend to fail, and s...So I changed the spark plugs and wires. Now the p0172 and p0175 are gone. The new code is p0300 random misfire. The plugs and wires that were on the truck had to be the original ones they looked really bad. Do you think one of the coils are bad . Thanks.Here is the deal. The car idles poorly, but it stays running at about 1000 RPM, (I actually drove the two miles to my place) when you rev it in park about 2500 RPM and higher, it actually runs on all eight cylinders. So I pulled the codes and got these P0202, P0204, P0206, P0208, and P0300 Random Misfire Detected and the Stabilitrac light is on ...

Plugs (Denso iridium) are rated for 120k miles while I only have 106,000 km on them. I think its IAT related because I don't think its the plugs or the coil packs. The rough idle has only ever occurred during the first start of the day, and this is the first time its also popped a P0300 at the same time. I don't want to deal with the IAT today ...Hey Guys, So I have searched on these forums and saw some people were having similar issues, but not all the same. Here is a break down 07 Tahoe 4x4 5.3 6l80e/3600 Stall 799 heads Truck was turbo last year , blew the motor this past Jan. Replaced the motor, swapped old cam, heads...Causes. How to Fix. P0301 + Other Codes. Common Questions. Conclusion. P0301 Meaning: Cylinder 1- Misfire Detected. Cylinder 1. P0301 is a cylinder-specific …07-14 5.3 AFM Lifter Replacement. P0300 P0301 P0304 P0306 P0307Fix! Silverado,Tahoe,Sierra,Yukon, Suburban,Avalanche this video was from a 2014 suburban with...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.Here is an updated video with better sound. https://www.youtube.com/watch?v=RAdAcMkKlM8Overview of how to fix a P0521 Code on a Silverado, Sierra, Tahoe. Che...

P0301 definition: Cylinder 1 misfire detected. Issue Severity: SEVERE - Stop driving immediately. Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. Diagnosis: A misfire can be caused by anything from faulty spark plugs to low engine compression.The last digit of these codes refers to the affected cylinder. Repair and diagnosis procedures may differ according to the cylinder, so be sure to research well about the particular trouble code first before attempting any repairs. These ignition coil circuit codes are often accompanied by the misfire codes P0300-P0308.i have a cylinder misfire on #7 & #8 with codes p0300 & p0200. checked fuel injectors and spark plugs. plugs are fairly worn and could use replacement but are still in working order. swapped plug #8 with #2, swapped coil #8 with #4, swapped injector #8 with #6, misfire still on #8. ran smoke test and found a lot of smoke coming from crank case ...Here are the most common issues that cause your Tahoe to jerk when accelerating: 1. Misfiring Engine. A few things can cause an engine to misfire. More often than not, it's going to be the spark plugs or coil packs that are the culprit. A misfire is the most common reason your Chevy Tahoe jerks while accelerating.

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Vacuum leak. Malfunction of the oxygen sensor. Burnt exhaust or intake valve. Defective catalytic converter. A defective throttle position sensor. Faulty PCM. Leakage of the head gasket. How serious is the P0300 Code? Medium – The code p0300 is triggered because of misfires on any cylinder.If your Chevy Tahoe has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter. Your Tahoe's engine is a giant pump. It pulls in air (where it is measured by the mass airflow sensor). The air is then guided into the cylinder where fuel is added and compressed.LT Sport Utility 4D. $40,120. $7,663. LTZ Sport Utility 4D. $48,980. $8,885. For reference, the 2007 Chevrolet Tahoe originally had a starting sticker price of $34,755, with the range-topping ...Chevy S10 Forum (GMC Sonoma) Truck misfiring, codes P0200 and P0300. Tags 99 sonoma open injector circuit p0200 p0300. Jump to Latest ... I understand the P0200 is most definitely causing the P0300 code, so I need to isolate why how I have an open injector circuit. I really need my truck fixed because my poor WS6 has 223k miles on it and doesn ...

YES! Your description is EXACTLY what my Tahoe has been doing the past 2 months. Whenever I sit in idle for too long (@ the bank, line at McDs etc) the check engine comes on sometime that day. I have 95,400 miles on my 2015 LTZ and and extended warranty. Taking the kiddos to school/daycare and then to the office.GM has issued a service bulletin to address a P0300 chirp, squeak, squeal or tick noise on V-8 engines. Home; Make & Model; Repair Topics ... Silverado, Suburban, Tahoe. 2009-2010 Chevrolet Colorado. 2003-2009 Chevrolet Trailblazer. 2006-2010 Chevrolet Impala SS. 2006-2007 Chevrolet Monte Carlo SS. 2003-2006 Chevrolet …I have a 07 Tahoe 5.3l that recently had issues with oil pressure, stabilitrak, low oil pressure shut off engine errors, p0621, p0300, and p0304 codes. I started replacing the MAF, TB, and Spark plugs & wires. After the spark plug and wires I developed a knock couple days later.1999 chevy tahoe misfire code p0300. Thread starter andre912; Start date May 17, 2014; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission. May 17, 2014 #1 A. andre912 TYF Newbie. JoinedCuando se establece el P0300 en un auto Chevrolet significa de forma básica que la PCM (Powertrain Control Module) ha descubierto que uno de los cilindros ...Hello, My Yukon is idling terribly and seems to be running very rich, has black smoke out of the tailpipe and is getting awful fuel mileage. Used a scanner and it is throwing P0101 (MAF) and P0106 (MAP) codes along with a random misfire code, which I figure is related to the 2 previous codes.OBD II fault code P0300 is a generic code that is defined as "Cylinder Misfire Detected Random Cylinders", and is set when the PCM (Powertrain Control Module) detects either a random misfire on one cylinder, or multiple cylinders that misfire randomly. ... 2015-2016 Chevrolet Silverado, Suburban, Tahoe, and; 2016 Chevrolet Camaro models ...The P1133 trouble code is a generic code that applies to all vehicles newer than 1996. It means the powertrain control module (PCM) has detected a problem with the bank 1 sensor 1 oxygen sensor’s ability to switch from rich to lean and back again. The PCM uses this sensor to monitor the exhaust output. In an efficient engine, the oxygen level ...P069E code indicates that the FPCM has identified an issue in the fuel system and is requesting the PCM turn on the check engine light. The FPCM supplies and regulates the voltage that goes to the fuel pump and the fuel pump relay. It can be a stand-alone module or a computer integrated into the PCM. Usually, the FPCM is a stand …The P0430 code in a Chevy Tahoe will often be thrown if one of your vehicle’s oxygen sensors is not functioning correctly. ... (such as P030X, where X is the misfiring cylinder) or P0300 (random multiple misfiring), it can cause the catalytic converter to overheat, which decreases its efficiency and throws ... I have a 2007 h3 hummer base ...

GM-Man Discussion starter. 67 posts · Joined 2012. #1 · Mar 31, 2013. Hey, I have a 2000 GMC Sierra 5.3l V8 with 161,000 miles (260,000kms) and It has a P0300 Random Misfire code. The truck runs perfect around town and on the highway but the misfire is relative to RPM. If i hold the revs at 1900rpm or more it misfires and the SES light flashes.

2007 GMC Yukon Multiple Misfires-Codes-P0300-P0352-P0354-P0356-P0358. This 2007 GMC Yukon came in with multiple complaints among which were the engine seemed to have no power, the Service Engine Soon, ABS and Traction lights were on and there was a stability message displayed in the Driver’s Information Center (DIC).truck came in with a p0300 random misfire, scanned some place else, with a global scanner ,when scanner with professional scanner code p0307 popJul 27, 2023 · Have a flashing CEL, super rough idle. This happened 6 weeks ago and went away.Stabilitrack and ABS have been on the whole time. I hooked up a Tech2 and it pulled P0300, P0204, P0206, P0208 Injector Control circuit. I installed new spark plugs and wires and still have the same problem. Using a... Tahoe hybrid chevrolet chevy battery 2009 2007 p0496 cells cars generation warranty suburban deer 2008 months prices rebuilt car symptoms2006 chevy hhr under powered engine. code p0121, p0300, p0340, p2176 P0496 chevy tahoe: evaporative emission system high purge flow.2007 Chevy Tahoe 5.3L P0300 - YouTube. Check Details. 2007 Chevrolet Tahoe - 2007 Tahoe code P0455. Check Details. 2010 Chevy Tahoe LT please help p0449 - Chevrolet Forum - Chevy. Check Details. Chevy Tahoe P0300 OBDII Code Diagnosis | Drivetrain Resource. Check Details.To diagnose and resolve the P0300 code, you can follow these steps: Check for other codes: The P0300 code often accompanies specific cylinder misfire codes (P0301, P0302, P0303, etc.). If you find any additional codes, they can help narrow down the issue. Inspect ignition components: Examine the spark plugs, ignition coils, and ignition wires ...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.

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P0300 chevy 2007 Chevy tahoe p0300 obdii code diagnosis 2005 chevy tahoe p0300 misfire code. Sparky's Answers - 2007 GMC Yukon Multiple Misfires-Codes-P0300-P0352 2007 tahoe p0455 P0300 random/multiple cylinder misfire,due to low compression p0171.P0308 definition: Cylinder 8 misfire detected. Issue Severity: SEVERE - Stop driving immediately. Repair Urgency: Fix this code immediately (same day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. Diagnosis: A multiple misfire can be caused by anything from faulty spark plugs to low engine ...2008 Chevrolet Tahoe 5.3 I have a p0300 and with my scanner it says I have a misfire on cylinder 6 I did a compression check and it has 125 all other cylinders on that side has 160 . Answered in 1 minute by: Chevy Mechanic: Daniel Chaidez. Daniel Chaidez. Category: Chevy. Satisfied Customers: 14,558. Experience: Technician at Global Auto Repair.The mysterious 'P0300' code on a 2007 Chevy Tahoe raises eyebrows, leaving car enthusiasts puzzled. Its enigmatic nature keeps owners guessing, as the fault could be anything from a misfire to a deeper engine issue. With diagnostic tools and some detective work, drivers embark on a quest to unravel this automotive enigma.Tech Notes. - C0561 71 System Disabled Information Stored Invalid Serial Data Received. - C0561 72 System Disabled Information Stored Alive Counter Incorrect. - C0561 74 System Disabled Information Value of Signal Protection Calculation Incorrect.Technical Assistance (TAC) is currently receiving calls after the engine has been disassembled with no trouble found before completing SI diagnostics for DTC P0300 and P050D. Follow the flow chart for the P0300 to validate that there is not an ignition or mechanical concern with or without the P0300 set. When completing the flow P050D chart, be ...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.2014 Chevrolet Silverado 1500, 2014-2016 Corvette; 2015-2016 Chevrolet Silverado, Suburban, Tahoe, and; 2016 Chevrolet Camaro models; are particularly susceptible to code P0300. Refer to Technical Service Bulletin 15-06-01-002C for details on possible causes and suggested repair options. Help Us Help YouThe AC voltage level and number of pulses increases as speed increases. The module converts the pulsating AC voltage to a propshaft RPM which is used for calculations. The propshaft RPM can be displayed with a scan tool. This DTC detects an open, short to ground, short to voltage or faulty sensor. C0300 Chevrolet Code - Rear Propshaft Speed Sensor.The Chevy Tahoe utilizes a crankshaft position sensor (CKP) in order to regulate the engine timing. This sensor uses a reluctor to gauge the position of the crank. When the Tahoe’s ECM determines that the signal coming from this sensor is out of range, it’ll throw the P0336 trouble code. P0336 is most commonly caused by a bad crank … ….

2007-2011 GMC Savana, Sierra 1500, Sierra Danali, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL with V-8 built prior to Feb 1, 2011 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.P069E code indicates that the FPCM has identified an issue in the fuel system and is requesting the PCM turn on the check engine light. The FPCM supplies and regulates the voltage that goes to the fuel pump and the fuel pump relay. It can be a stand-alone module or a computer integrated into the PCM. Usually, the FPCM is a stand …They are in order of probability. P0449 can not be generated due to any other failure. Evap leaks generate one of a few other codes. 1. P0442 small leak 2. P0446 large leak 3. P0496 evap flow during non purge event 4. I can't remember the exact code number but it relates to vent valve performance.Because, GM V8 engines are very prone, to a rough idle and engine misfire when cold. The check engine light may also come on, with codes P0300, P0171 and PO174. But, as the engine warms up, the engine misfire or rough idle tends to go away, which seems confusing. Now, lets get armed with the knowledge of what can cause, a engine misfire or ...I have a 2007 chwcy tahoe and its throwing a few codes c0561 p0300 p0171 and I have no clue where to start. To both - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website.P0300 misfire chevy random 2007 cylinder multiple silverado. The only code is p0300P0300 misfire gm 3l Chevy silverado gmc sierra p0300 diagnosis and repairP0300 gmc yukon misfires p0352 silverado tahoe sparkys. Sparky's answersCode chevy p0300 2001 blazer P0300 fault code 02 silverado 4x4 5.3 vortecP0300 code update! fixed! (2001 chevy blazer ...Even slight variations in the air/fuel mixture will cause the converter temperature to rise significantly. The "Catalytic Converter Efficiency" Diagnostic Trouble Codes (DTCs) P0420 and P0430, are among the top 10 DTCs technicians face. And while the description might imply a failed converter, odds are the ultimate fault lies somewhere else.Apr 26, 2017 · AFM Misfire P0300 code, Service Stabilitrak/Traction Control comes on. I am working on a 2007 Chevy Tahoe, 4WD, 5.3L engine with RPO code LMG. It came in with codes P0300 and P0521. It had a valve train noise and I was able to isolate it to the passenger side of the engine. I got the valve cover off and discovered a valve rocker that had too ... LT Sport Utility 4D. $40,120. $7,663. LTZ Sport Utility 4D. $48,980. $8,885. For reference, the 2007 Chevrolet Tahoe originally had a starting sticker price of $34,755, with the range-topping ... P0300 chevy tahoe 2007, To put it simply, this code means that one of the cylinders in your vehicle misfired and that the misfire was detected and reported by your car’s computer. P0300 is vaguer than other misfire codes and doesn’t provide any insight on which one of the cylinders might have experienced the issue. If you get a P030­_ code with a number other ..., cheapest yet effective P0300 fix for MISFIRE 2007 Chevy SuburbanRough idle, rough shift, Stabili trak + traction control & blinking engine light starting hap..., 1. I've had this car for 4 years no major issues. It sat for a week, after a couple of miles stabilitrak lit up and the car started missing. Turned around to limp home and it straightened out for a mile then started missing again with raw gas making it to the muffler and igniting. I pulled these codes., So i've been having this issue since december of last year with my 6.0 01 Denali. Code is p0300. misfires happen on cylinder 5 mostly but 2 and 4 sometimes. i replaced spark plugs, spark plugs wires, PCV valve, EGR , Coil packs ( just for the ones missing) sea-foamed, checked compression and i..., Tahoe p0449 P0300 misfire in all cylinders 2001 tahoe 2007 5.3l chevy lifters p0300. Chevy Tahoe P0300 OBDII Code Diagnosis | Drivetrain Resource. 2001 chevy tahoe p0300 cylinders 1 and 6 at high speed Chevy tahoe p0440: evaporative emission control system malfunction I have a 2007 chevy suburban 5.3liter with a misfire in cylinder 4., May 16, 2018 ... P0300 Engine Misfire. In this video, I will ... P0300 #FlatRateMechanic #DIYAutoRepair Check out ... GM - Chevy Truck: Misfire Diagnosis. South ..., Jul 26, 2023 · How to troubleshoot and fix a Chevrolet P0300 engine code: Engine Misfire DetectedAmazon Link to Spark Test Tool: https://amzn.to/3Dw57BaHow to Check for Eng... , Hi all , im new and from england ive been having afew problems with my 2001 tahoe 5.3l , now where to start all of my problems started with the dreaded p0300 and both banks running lean . so after alot of reserch ive replaced the intake manifold gaskets with the green ones , all plugs and..., In todays video we look into a common issue causing mifires and low compression on Chevy and GMC Cars, Trucks and SUV's equipped with the Active Fuel Managem..., Video on diagnosing and repairing a P0455, which is an EVAP large leak detected code on a 2007 - 2014 Chevy Tahoe.CONNECT WITH US: Facebook: https://www.face..., Have Same problem with 2007 Avalanche code P0300. swap coil and wire on #4 cylinder no change. Did compression test low - Answered by a verified Chevy Mechanic. ... i have a 99 chevy tahoe with 5.7, 4x4, k1500. it came to ... i have a 99 chevy tahoe with 5.7, 4x4, ..., 2008 Tahoe P0300, Rough Idle After Work. davidkramer; Nov 8, 2023; Engine & Drivetrain; 2. Replies 16 Views 2K. Nov 21, 2023. davidkramer. D. My Experience so far with 2007 Yukon. Idle issues after cam swap, P0300, P0420, tuning. ouch_my_L4L5; May 26, 2023; Performance; 2. Replies 16 Views 6K. Aug 22, 2023. ouch_my_L4L5. Share: Facebook X ..., AFM Misfire P0300 code, Service Stabilitrak/Traction Control comes on. I am working on a 2007 Chevy Tahoe, 4WD, 5.3L engine with RPO code LMG. It came in with codes P0300 and P0521. It had a valve train noise and I was able to isolate it to the passenger side of the engine. I got the valve cover off and discovered a valve rocker that had too ..., Chevy tahoe p0304 p0306Afm lifter p0300 suburban tahoe 2007 5.3l chevy lifters p0300Chevy tahoe misfire problem fixed code p300. Random multiple misfire - Lemainal. Check Details. 2001 chevy tahoe p0300 cylinders 1 and 6 at high speed. Code chevy p0300 2001Random multiple misfire - lemainal P0300 2007 tahoe chevyP0300 chevrolet code trouble ..., Jul 27, 2023 · Have a flashing CEL, super rough idle. This happened 6 weeks ago and went away.Stabilitrack and ABS have been on the whole time. I hooked up a Tech2 and it pulled P0300, P0204, P0206, P0208 Injector Control circuit. I installed new spark plugs and wires and still have the same problem. Using a... , Hey ya'll I had my oil pump, pickup tube, lifters and all gaskets replaced on my 2008 Tahoe 4WD with 120k miles on it. About 5min after driving it, I had a service traction control/stabilitrak light and P0300 light come on with a rough idle. Looking at my computer, it is saying Cylinder 1 and 7 are misfiring (7 worse then 1)., Aug 1, 2019 ... 07 - 13 5.3 AFM Lifter Replacement. P0300 Fix! Silverado, Tahoe ... 2007 CHEVY TAHOE GETS AFM/DOD DELETE 4TH GEN 5.3L LS. Derek Built•11K ..., #Chevy #Vortec #Misfire #RandomMisfireChevy Vortec Multiple Misfire Code P0300 - Cheap Fix (Crankshaft Sensor Relearn)Here's a way to possibly solve a random..., i had a check engine light on this morning when i started my truck. i live in colorado in the mountains and it's pretty cold. the guy at autozone ran the code reader …, 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)., Been struggling for a few weeks with a P0300 on my 2005 GMC Sierra 1500 5.3 Z71 4x4 SLE quad cab 175k miles. It spent most of it's life in New York, so, yeah, fairly rusty underneath. This recent issue actually started with a rough idle and a P0307 (misfire on cylinder 7)., Code P0300 is often related to bad spark plugs or spark plug wires but could be caused by a number of issues relating to ignition and the air-to-fuel ratio in the …, p0300 can be caused by : Faulty spark plugs or wires. Faulty coil (pack) Faulty oxygen sensor (s) Faulty fuel injector (s) Burned exhaust valve. Faulty catalytic converter (s) Stuck/blocked EGR valve / passages. Faulty camshaft position sensor., P0330 is a powertrain OBDII trouble code that has the same meaning for the Chevy Tahoe as it would any other vehicle. By definition, it means that the vehicles ECM/PCM isn't getting the proper signal from the knock sensor. Clearing this code typically requires a new knock sensor. The second most common cause is a short or break in the wiring ..., P0300 cruze falloCruze p0302 p0304 p0303 2012 chevy cruze 1.4 codes p0299 p0300 p1101 and u0109. customerP0300 code: cylinder misfire issue (causes and how to fix). P0300 code - meaning, symptoms, causes & fixesChevy cruze p0302: cylinder 2 misfire detected 2 parte p0300 chevrolet cruze fallo en el motor y consumo de aceiteFix code p0301 ..., Aug 20, 2018 · I'm having a very similar issue, but my codes are on the left bank and yours are on the right bank. Same symptoms ran perfect one second, then stalled. I was able to restart and limp home. Suddenly power seemed fully restored, but shortly I was misfiring again. Any Ideas? I have codes: P0134, p0300, p0351, p0353, p0355, P0357, P1133. Thanks , Hi. 1997 Chevy Suburban. 175000 miles. It is constantly throwing P0300 random misfire code. At my current garage they said the first thing they … read more. Tim's Auto Repair., I created this video with the YouTube Video Editor (http://www.youtube.com/editor), P0300 or P0301 trouble code; Both the 5.3-liter and 6.2-liter V8 engines can suffer from lifter failures. Other GM vehicles that use the same engine such as the Chevy Tahoe and Silverado are also affected by this problem. Premature failures are common in the 2007 to 2021 model years of the Chevy Tahoe., Malfunction of the oxygen sensor. Burnt exhaust or intake valve. Defective catalytic converter. A defective throttle position sensor. …, Jan 19, 2008 ... The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the ..., If that increase and/or decrease is more than 2 percent, the Powertrain Control Module will store the P0300 trouble code. If the percentage of the increase or decrease in revolutions per minute (RPM) is between 2 percent and 10 percent, the Check Engine Light will come on. If the percentage of the increase or decrease in revolutions per minute ..., 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 P0300 ...