P0300 code honda accord

19 Apr 2021 ... Comments12 ; Honda Accord Ignition Misfire - Diagnosis & Repair. ScannerDanner · 61K views ; Unhappy Honda MISFIRE P0300 (Part 1 - Diagnosis - ...

P0300 code honda accord. A P0300 can have serious implications, especially because it indicates multiple misfires, and therefore any code ranging from P0301 to P0306. When a misfiring occurs, a technician should ...

What is the Cost to Diagnose the Code? Labor: 1.0. The cost to diagnose the P0305 Honda code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

The piston rings. Communication Number: A12-087, Date: 2018-12-19. Category: 060000 ENGINE (PWS) Summary: "Service bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2008-11 Accord L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first.Jan 21, 2024 · Honda Accords can experience various check engine codes depending on the model year and specific issues. Some common codes include P0420 (Catalyst System Efficiency Below Threshold), P0300 (Random/Multiple Cylinder Misfire Detected), and P0171 (System Too Lean Bank 1). It is crucial to identify the specific code to accurately diagnose and ... vsa and codes p0300,p0305,p0306 and now p0304. Having problems with my 2009 ex-l odyssey. we bought it a year and a half ago and loved the van for all this time. about 3 months ago it started to flash the cel and the vsa would come on. running rough. codes p0300 and p0305,p0306. random misfire and cylinder 5 and 6.Jan 20, 2024 · To diagnose a P0301 code in a Honda Accord, you can follow these steps: 1. Begin by checking the spark plugs and their wires. Look for signs of damage, wear, or carbon buildup. 2. Inspect the ignition coil for any cracks or other visible issues. 3. Test the fuel injector for proper operation. If you want to fly private between California and New York nonstop, you'll need a midsize jet or larger and at least two pilots. However, Honda Aircraft Comp... If you want to fly ...

That may include but is not limited to vehicles from Honda, Dodge, Ram, GMC, Chevrolet, Chrysler, Pontiac, etc. A stored code P3400 means that the powertrain control module (PCM) has detected an abnormality in the cylinder deactivation system for engine bank one. Bank 1 denotes the bank of the engine which contains the number one cylinder.4’th Cylinder. P0304 is a cylinder-specific misfire code, meaning only your Accord’s fourth cylinder has a misfire. Before you can even diagnose P0304 in your car, …Apr 26, 2021 · Code P0300 stands for “Random or Multiple Cylinder Misfire Detected.”. In most cases, a P0300 is accompanied by other trouble codes from P0301 to P0308. There are many factors that can trigger this trouble code, including problems with the ignition system and fuel delivery, vacuum leaks, and engine mechanical issues, among others. Thanks to virtual reality, Honda is relying less on a car design practice that’s (literally) shaped auto making since the '30s. Honda is pulling away from a design practice that’s ...When is the code detected? The control module monitors the crankshaft speed and has detected a misfire condition. Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Lack/loss of power - Hard start - Engine hesitation. P1399 Honda Description When a misfire occurs, engine speed will fluctuate. If the …The inspection facility determined the codes; Diagnostic Trouble Codes (DTC) P0300 through P0306 - Cylinders 1-6 Misfire detected as well as Random/Multiple Cylinder Misfire Detected. The mechanic suggested it may be spark plugs. We also called the Honda dealership and they suggested spark plugs as well. The check engine light …2000 honda accord code p0302,p0305,p0300. 2009 honda accord 2.4l p0300 p0302 p0303 p0339P0300 code: cylinder misfire issue (causes and how to fix) Accord honda v6 codes transHonda p0302 accord p0305 2000. Color honda accord p0339 placeholder 2009 input p0303 p0300 4l p0302 darker change css misfire reset …

Mar 20, 2015 · The Car Doctor. 161K subscribers. Subscribed. 1.8K. 286K views 9 years ago. How to diagnose and repair Honda COP ignition system misfires. P0300, P0301, P0302, Etc. Misfire codes may be... 2000 honda accord code p0302,p0305,p0300Accord honda p0339 2009 p0302 misfire 4l p0300 p0303 codes freeze frame some 2001 ex p0300, p0302, p0304, p1399P0300 code – meaning, symptoms, causes & fixes. P0300 nissan sentraHonda accord p0430 obd2 code diagnosis Honda accord2009 honda accord 2.4l p0300 p0302 p0303 p0339. …My CEL came back on on and the code came up as a P1491 code. However, the 0300 - 0306 codes also came back. 2000 2dr. v6 Accord, " Dirty Girl ": Greddy SP2 Exhaust | K&N Drop-in Filter | Magnaflow Hi-Flow CAT | Eibach Pro Springs | Eibach Sway Bars | KYB-GR2 Shocks | PowerStop Slotted & Drilled rotors | PowerStop …Code Tech Notes. The P0302 code means that the cylinder 2 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 2. If the problem persists more tests needs to be done to diagnose problem, see "Possible Causes".You can use a wirless bluetooh OBDII reader: https://amzn.to/2X6mJ0Uregular OBDII reader: https://amzn.to/3esVRzzJoin Honey: https://www.joinhoney.com/ref/b...

Humboldt tides trinidad.

This bulletin has been extensively revised. American Honda recommends that you thoroughly read it. SYMPTOM The MIL comes on with DTC P0300 (random misfire detected), and/or P0301—P0306 (cylinder misfire detected), or P219A/B (air-fuel ratio variation of cylinder [bank 1, rear bank/bank 2, front bank]). PROBABLE CAUSEIf you’ve recently found yourself staring at your Honda’s radio, unable to unlock it because you don’t have the code, don’t worry – you’re not alone. Many Honda owners face this fr...The Snake ransomware is believed to be the cause. Honda has confirmed a cyberattack that brought parts of its global operations to a standstill. The company said in a brief stateme...Honda Accord P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine.

Check your spark plugs. If the tip is super black, that means they are burnt. Or maybe they weren't installed tight enough which will cause a misfire. That's my 2 cents on the situation. Good luck. tofu2012. • 2 yr. ago. fuel injector replacement and ignition coil and spark change change as well.If your Honda Accord is overheating, the cause could be any of the vital elements of the cooling system. Those elements are the heat exchanger, fan, water pump, thermostat and cool...Jul 17, 2021 · The code P030X (p0301-P0308) means that the cylinder number X misfires, or there is no combustion in that cylinder. For example, if the cylinder number 1 misfires in a 4-cylinder engine, it will run only on 3 cylinders and will have the code P0301, see the animation. Misfiring engine. The code P0300 stands for random misfire. The Snake ransomware is believed to be the cause. Honda has confirmed a cyberattack that brought parts of its global operations to a standstill. The company said in a brief stateme...Some of the primary symptoms related to trouble code P0300 on the Honda Accord include. The engine being difficult to turn over & start; A stumbling / hesitating response when the engine is running. Causes for P0300 on the Honda Accord. The most common cause of P0300-related issues is a problem with spark plugs & the associated …January 30, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Honda Element. 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).5 days ago · An engine misfire or incomplete combustion in one of the engine cylinders may cause the P0303 code, which belongs to a series of diagnostic trouble codes starting with P0300. In P0303, the number 3 indicates that cylinder 3 has misfired. Therefore, the third cylinder would be referred to as cylinder number 3. i am getting the following CEL codes. P0300, P0301, P0304, P0305, and P1399. i am pulling the plugs and checking them, also checking the coils. i'm going to replace the O2 sensors, clean or replace the EGR valve, check the fuel pressure, change the fuel filter, and seafoam the engine. if this doesn't work, then i'm going in for a valve adjustment.Honda is spending $700 million to retool three of its Ohio plants to build electric vehicles as it aims to phase out gas engines by 2040. Honda said on Tuesday it is spending $700 ...Honda’s new goal is to achieve 100% EV sales in North America by 2040 as part of its broader target of being carbon neutral by 2050. CEO Toshihiro Mibe announced the planned shift ...The Honda Accord tops the list of most popular cars year after year. It’s not a luxury or sports car, so it might come as a surprise that the Honda Accord is also the most stolen c...

2004 Honda Accord 3.0 Liter V6 Misfires. This 2004 Honda Accord came in with the SES (or check engine) light on. I checked codes and found a misfire code for everyone of the six cylinders. P0301, P0302, P0303, P0304, P0305 and P0306. With a code set for every cylinder plus a random misfire code P0300 I was pretty sure there would be a common ...

My CEL came back on on and the code came up as a P1491 code. However, the 0300 - 0306 codes also came back. 2000 2dr. v6 Accord, " Dirty Girl ": Greddy SP2 Exhaust | K&N Drop-in Filter | Magnaflow Hi-Flow CAT | Eibach Pro Springs | Eibach Sway Bars | KYB-GR2 Shocks | PowerStop Slotted & Drilled rotors | PowerStop Carbon Ceramic Pads | Stereo stuffP3400 is a generic OBD2 trouble code. It indicates that your Honda Accord’s cylinder deactivation system has a performance issue. It is a very common code to see in Honda-made cars, vans, and trucks. ... (like P0300 or P0302) or a VVT code and an oil pressure code. In either situation, ignore the VVT code (for now) and focus on the …HOW TO FIX CODE P0300 RANDOM MULTIPLE CYLINDER MISFIREIf your car has engine light on and code P0300 Random Cylinder Misfire Detected, we will explain what c...The P0304 code means that cylinder #4 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #4. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes". ⚠ Check if your Honda have Safety Recalls.a1smith. 525 posts · Joined 2020. #2 · Nov 6, 2021. P0302, P0303 are misfire in cylinders 2 and 3, respectively. The service manual for 08-10 Accords you can download from this site doesn't have C0700 listed. I searched C0700 on this website and your post is the only one that lists it. So, a dead end on that DTC.PROBLEM CODES;P0301,P0302,P0304,P0300,P1399,07-02,09-02,07-03. po301 to po304 are miss fire codes, 301 cylinder 1, 302 cylinder 2 Etc, p1399 means that this must be a Honda manufactured vehicle. All are misfire codes, Could be plugs, wires, coils. ETC, Check and you will find the problem.

Pong 2 player unblocked.

Herald standard uniontown pa obituaries.

Here are a few other symptoms you'll see with a misfire: The check engine light will be on. One or more misfire codes (P0300-P0306) will be stored in your Honda's PCM memory (if OBD II equipped). P0300 Random Cylinder Misfire. P0301 Cylinder #1 Misfire. P0302 Cylinder #2 Misfire. P0303 Cylinder #3 Misfire. P0304 Cylinder #4 Misfire.JEFFro said: Hi everyone, I own a 2006 PILOT EX with 77k miles, so today the car decided to throw the random misfire P0300, and cyl #1-#6 misfire codes (P0301-P0306) on the way home from work. I had a friend pulled the codes, reset it and haven't came back since (only drove 5miles). I searched google and found there is a service …My Accord has thrown specific and random mis-fire codes before, p0300 - p0306, but it has only happened due to the Heat Soak issue. ... Selene: 1999 Honda Accord LX Sedan 2.3 F23A4 202K Flamenco Black Pearl Atreyu: 1989 Honda Prelude Si Coupe 2.0 B20A5 4WS 112k Granada Black PearlCheck your spark plugs. If the tip is super black, that means they are burnt. Or maybe they weren't installed tight enough which will cause a misfire. That's my 2 cents on the situation. Good luck. tofu2012. • 2 yr. ago. fuel injector replacement and ignition coil and spark change change as well.Mar 14, 2016 · The misfires are sometimes not measured correctly hence the P0300 code for random misfires. The coils are fired by the ECM, since the problem moved to cylinder 2 as the code P0352 is telling you I would say the cylinder 2 coil is bad. Also, I would replace the plugs, I am assuming you are changing the timing belt because of mileage and the ... 2000 honda accord code p0302,p0305,p0300. 2009 honda accord 2.4l p0300 p0302 p0303 p0339P0300 code: cylinder misfire issue (causes and how to fix) Accord honda v6 codes transHonda p0302 accord p0305 2000. Color honda accord p0339 placeholder 2009 input p0303 p0300 4l p0302 darker change css misfire reset …Compression test, replace spark plugs, diagnose and replace bad coil. Tune up 2006-2011 Honda CivicAn engine misfire or incomplete combustion in one of the engine cylinders may cause the P0303 code, which belongs to a series of diagnostic trouble codes starting with P0300. In P0303, the number 3 indicates that cylinder 3 has misfired. Therefore, the third cylinder would be referred to as cylinder number 3.To diagnose the P0302 2009 Honda Accord 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 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'. ….

In this video, I'm solving the cylinder 2, 3 & random misfire issue on a 2008 Honda Accord with a crank position re-learn. I'll show you the exact procedure ...The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. …P1399 Honda Code Definition: Random Cylinder Misfire Detected. Unlike generic codes, P1399 is a manufacturer-specific trouble code. A number of Honda vehicles have it, including Honda Accords, Honda CRVs, Honda Odysseys, Honda Civics, etc. Anytime there is a random engine misfire, it appears. Many factors can cause a random …Honda Accord Forums. The 8th Generation. Trouble Code P0300 Random-multiple misfire detected. Jump to Latest Follow ... The misfires are sometimes not measured correctly hence the P0300 code for random misfires. The coils are fired by the ECM, since the problem moved to cylinder 2 as the code P0352 is telling you I would …To diagnose the P0302 2009 Honda Accord 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.1. Bad or weak battery. 2. Bad battery connections, or dirty connections. 3. Worn starter. 4. Aftermarket starter. Basically the issue is, at start time the voltage falls too low and the the ECM does not get the right pulses from the crankshaft sensor.Whenever that happens and I run a diagnostics, I normally get codes 1 and 2 but I have gotten one of the codes below atleast once since i have started having the issue. 1. Cylinder 3 Misfire Detected - P0303 2. Cylinder 4 Misfire Detected - P0304 3. Random/Multiple Cylinder Misfire Detected - P0300 4.The P0306 code means that cylinder #6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #6. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes". ⚠ Check if your Honda have Safety Recalls.2010 honda crv p0300,p0302,p0303 codes after having replaced crank position sensor for p0339. Replaced spark plugs and I swapped cylinder 2 and 3 coils with cylinder 1 and 4 coils still same codes. ... I have a 2009 Honda Accord that goes into limp mode and will not accelerate over 20 mph. I had crank shaft sensor replaced and then … P0300 code honda accord, Dreaded P0300 code & P0420. Jump to Latest Follow ... Drive Accord Honda Forums. 2.1M posts 127K members Since 2003 Drive Accord forum, a community where Honda Accord ..., P0300 and Every Cylinder Misfire (05 V6 6MT) Hello, recently purchased a 2 door 05 Accord V6 6MT with 210k on it. Care came with 11 years of service records, so verified that timing belt and water pump were good, etc. Recently been having a check engine light come on, went and got it checked out and it showed p0300 twice and every …, Causes, common problems, diagnostic. Updated: July 17, 2021. The code P030X (p0301-P0308) means that the cylinder number X misfires, or there is no combustion in that cylinder. For example, if the …, To diagnose a P0301 code in a Honda Accord, you can follow these steps: 1. Begin by checking the spark plugs and their wires. Look for signs of damage, wear, or carbon buildup. 2. Inspect the ignition coil for any cracks or other visible issues. 3. Test the fuel injector for proper operation., 2004 honda accord 3.0 v6 rough running. code test P0301 - P0306. all cylinders misfire. P02240 oxy sensor P0300 random misfire. Plugs are new, coils have been tested. ... 2006 Honda Pilot - check engine light on and off for 8 months - code P0300 to P0306 cylinder misfire; occasional rough running when cold; ..., Some misfire freeze frame. Reset and went for a test drive. Codes P0300, P0302 and P0303 come back right away. scan data shows a constant misfire on cylinders 2 & 3. Engine doesn't actually run rough I think the customer confused the limp mode rev limiter with rough running. Looking at Stuff. Coil #2 primary side. Looks OK. Coil #3 shows the same., Hey everyone, I have a 2001 Honda Accord EX Coupe 2.3L with a misfire problem. I have scanned the car and came up with the codes P0303 (cylinder 3 mis) P0304 (cylinder 4 mis) and P0300 (random mis). Also, I’ve noticed that at low rpms it is really rough and a high rpms it smooths out., Code P0306 Honda Tech Notes. The P0306 code means that cylinder #6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #6. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes"., I currently own a Honda Accord Hybrid 2007 V6 (J Series), and would like to have your insight in addressing a random misfire code P0300 through P0306 which happens intermittently during idle after turning on the ignition either after the 2nd or 3rd time when I drive during the day. The CEL doesn’t trigger during a cold start but with a warm ..., Having misfires on 2008-2012 4 cylinder accords? Replaced your starter recently? Your starter can actually be the issue.For daily content follow me on instig..., , Remember, the way the ECM determines misfires is via the crankshaft sensor, sometimes it throws up a P1399 as it can not determine which cylinder is misfiring. The P1XXX codes are specific to the manufacturer, as the normal multiple misfire code is P0300. If cylinder 3 is very low that is your issue., P1399 Honda Code Definition: Random Cylinder Misfire Detected. Unlike generic codes, P1399 is a manufacturer-specific trouble code. A number of Honda vehicles have it, including Honda Accords, Honda CRVs, Honda Odysseys, Honda Civics, etc. Anytime there is a random engine misfire, it appears. Many factors can cause a random …, Dec 6, 2018 · Honda Accord P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine. , Aug 16, 2023 · Code P0306 Honda Tech Notes. The P0306 code means that cylinder #6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #6. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes". , P0300 and Every Cylinder Misfire (05 V6 6MT) Hello, recently purchased a 2 door 05 Accord V6 6MT with 210k on it. Care came with 11 years of service records, so verified that timing belt and water pump were good, etc. Recently been having a check engine light come on, went and got it checked out and it showed p0300 twice and every …, vsa and codes p0300,p0305,p0306 and now p0304. Having problems with my 2009 ex-l odyssey. we bought it a year and a half ago and loved the van for all this time. about 3 months ago it started to flash the cel and the vsa would come on. running rough. codes p0300 and p0305,p0306. random misfire and cylinder 5 and 6., When you need a Honda Accord key replacement, there are three things you can do, according to Lost Car Key Replacement. Basically, though, it boils down to working with a dealer or..., When is the code detected? The control module monitors the crankshaft speed and has detected a misfire condition. Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Lack/loss of power - Hard start - Engine hesitation. P1399 Honda Description When a misfire occurs, engine speed will fluctuate. If the engine speed ..., 4’th Cylinder. P0304 is a cylinder-specific misfire code, meaning only your Accord’s fourth cylinder has a misfire. Before you can even diagnose P0304 in your car, you need to find the fourth cylinder’s location. On “V” configuration engines, it’ll usually be the second cylinder on the head further away from the front of the engine., Quick overview of cause and fix for a P3400 error code in a Honda. Link to article: https://www.backyardmechanic.org/how-to-fix-honda-engine-error-code-p3400/, My friends 2008 accord 2.4 had a p0339, p0300, p0302, p0303. I swapped plugs and coils from good cyls to bad cyls. Cleared codes and the p0300, p0302 & p0303 keep returning. I disconnected the battery same thing. I also had a catalyst effeciency code but I was thinking that since it's showing a misfire that could cause that code., 22 Oct 2020 ... Misfire Quick Tests (Is it a spark, fuel or compression problem?) ScannerDanner · 804K views ; P0300 Explained - Random/Multiple Cylinder Misfire ..., Code P1381 is a rather serious problem, as it affects different key parts of your powertrain. The code, may for instance, be triggered by circuit issues, low engine oil level or issues with the ..., Code P0306 Honda Tech Notes. The P0306 code means that cylinder #6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #6. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes"., Oct 14, 2018 · Honda Accord P0305 Definition. P0305 is a cylinder specific misfire code, which means that Cylinder 5 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 5 is that it’s going to be the fifth cylinder in the firing order. It won’t be the fifth cylinder that you might see when looking at the engine. , Sep 12, 2023 · Misfires occur when the ignition timing is incorrect. There is a problem with cylinder 4, as indicated by P0304, which means that it is experiencing misfires. Specifically, P0304 indicates cylinder four is misfiring, causing the code to display. Therefore, cylinder #4 will be the 4th cylinder in the vehicle’s firing order, not the 4th ... , Some misfire freeze frame. Reset and went for a test drive. Codes P0300, P0302 and P0303 come back right away. scan data shows a constant misfire on cylinders 2 & 3. Engine doesn't actually run rough I think the customer confused the limp mode rev limiter with rough running. Looking at Stuff. Coil #2 primary side. Looks OK. Coil #3 shows the same., P0302 in the Honda Accord is a common OBD II trouble code. It indicates that your car’s second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it’s bad enough to cause your Accord’s check engine light to come on, you shouldn’t drive your car at all. Repairing P0302 should be considered ..., Dec 16, 2018 · January 30, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Honda Element. 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). , Jul 17, 2021 · The code P030X (p0301-P0308) means that the cylinder number X misfires, or there is no combustion in that cylinder. For example, if the cylinder number 1 misfires in a 4-cylinder engine, it will run only on 3 cylinders and will have the code P0301, see the animation. Misfiring engine. The code P0300 stands for random misfire. , This 2004 Honda Accord came in with the SES (or check engine) light on. I checked codes and found a misfire code for everyone of the six cylinders. P0301, P0302, P0303, P0304, P0305 and P0306. With a code set for every cylinder plus a random misfire code P0300 I was pretty sure there would be … Continue reading "2004 Honda Accord 3.0 …, i am getting the following CEL codes. P0300, P0301, P0304, P0305, and P1399. i am pulling the plugs and checking them, also checking the coils. i'm going to replace the O2 sensors, clean or replace the EGR valve, check the fuel pressure, change the fuel filter, and seafoam the engine. if this doesn't work, then i'm going in for a valve …