P1456 honda accord

Turn key to off. Code P1456: Evaporative Emission (EVAP) Control System leakage. Code P0740: Transmission lock up control system. the first code can be caused by a loose or non-factory fuel cap or a leak. The second code indicates the transmission torque converter lock-up solenoid could be faulty.

Журналистът Миролюба Бенатова коментира във фейсбук вчерашния протест пред сградата на БНТ. Хиляди граждани блокираха района и с часове не пуснаха председателят на парламентарната група на ГЕРБ Даниела Дариткова да излезе. Ето какво сподели Бенатова: Кадафи винаги ...SOURCE: unlock radip code,1998 honda accord 4 door. Try these things. Why don't you call the Honda customer service at 1-800-999-1009 have your radio serial number and VIN to your car and they will help you to unlock your radio. If you don't have the serial code to your radio and you are the original owner they will tell you have to get the ...15,575 Answers. This code P1456 does mean that you replace purge valve . Could be other thing's must test the Evaporative emission system . P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank Suggest you take an have a qualified repair shop diagnose the problem . P1456 Honda Evaporative Emissions Control System... engine-codes.com.P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank Suggest you take an have a qualified repair shop diagnose the problem . Read full answer Oct 08, 2016 • 2002 Honda AccordFor a 2000 Honda Accord LX, the check engine code P1456 simply means that your gas cap is off or isn't tight enough. It wont go off immediately. It make take up to a weak for the check engine light to turn off once the gas cap is tightened enough.-----Renault CAN Clip. Read full answer. Dec 10, 2012 • Cars & Trucks. 0 helpful. 1 answer. I have a …Журналистът Миролюба Бенатова коментира във фейсбук вчерашния протест пред сградата на БНТ. Хиляди граждани блокираха района и с часове не пуснаха председателят на парламентарната група на ГЕРБ Даниела Дариткова да излезе. Ето какво сподели Бенатова: Кадафи винаги ...The P1456 code relates to the fuel temperature sensor in your vehicle. It is set when the Powertrain Control Module (PCM) detects out-of-range voltage signals in the fuel temperature sensor...aregando el codigo p01456 en este honda accord 98 espero les sirba de ayuda

P0456 is an evaporative emissions system code. That’s the system that checks to make sure your fuel tank isn’t spewing fuel vapor into the atmosphere. For this Honda fit, P0456 indicates there is a “very small leak” in the system. How small? About the size of a .020″ hole, although it doesn’t have to be just one hole.Most common reason causing this code on Honda vehicles and how to prevent this from happening again.Causes and fixes Honda Accord P1456 engine code: EVAP Emission Control System Leak Detected (Fuel Tank System)Possible Causes Honda Accord P1456 Code:Bad Gas...Nov 23, 2022 · P1457 indicates a leak has been detected in the evaporative emission control system. According to some scan tools, the problem is reported as a leak in the EVAP canister. Under the car near the fuel tank, the vent valve on the charcoal canister usually causes the Honda P1457 code. Honda Accords, Civics, Odysseys, and CR-Vs commonly display this ... P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank Suggest you take an have a qualified repair shop diagnose the problem . Read full answer. Oct 08, 2016 • 2002 Honda Accord. 0 helpful. 1 answer. What is a P1456 code. Hi James, Kindly check this website for you for detailed description of code P1456. P1456 Honda Evaporative …To diagnose the P1456 1999 Honda Civic 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.Feb 13, 2015 · If you have a 1999-2003 Honda Odyssey with a EVAP system code of P1456 then the problem is possibly a faulty 2 way valve and bypass solenoid. Watch this vide...

Honda Accord. Serpong 6 hari yang lalu. Rp 132.000.000. 2008 - 125.000-130.000 km. Honda Accord. Karang Tengah 7 hari yang lalu. muat lainnya. Daftar Mobil Bekas Banten yang Laku Keras di Internet. Banten merupakan provinsi di Pulau Jawa hasil pemekaran dari Jawa Barat. Meski terbilang baru, hampir semua wilayah Banten sudah memiliki ...The P1456, happens on my 1999 4 cylinder Accord a lot. I'm in Pennsylvania, which is in the rust belt that CDsDontBurn mentioned, haha. The housing on that part is cracked on mine and should be replaced, but at the moment it isn't causing any mechanical failure. ... Selene: 1999 Honda Accord LX Sedan 2.3 F23A4 188K Flamenco …Starting price of a second-hand Honda Accord is Rs. 1.9 Lakh. Some of the used Honda Accord on CarWale come with a 7-day money back guarantee, 167 points certification check and a 15000km ...1999 Honda Accord LX 3.0L. I got a p1456 code and changed the gas cap what should i do next. asked Apr 19, 2017 by anonymous. p1456; honda; accord; 37.4k questions 31.6k answers 1.3k comments 22.5k users Need A Repair Shop? Find local automotive repair shops in your area. AutoCodes.com Shops. Does your car have Safety …Aug 21, 2022 · 1998-2000 Honda Accord Factory Service Bulletin OBDII Code p1456 Troubleshooting DTC P1456 (EVAP system leakage [fuel tank system]) in a 2003-2004 Pilot? Pinch off all the hoses between the fuel filler neck and the fuel tank, and retest. If the leak stops, replace the fuel fill cap first.

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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 car in the United States.Điều 1. Thành lập phường Quảng Thành thuộc thị xã Gia Nghĩa và thành phố Gia Nghĩa thuộc tỉnh Đắk Nông. 1. Thành lập phường Quảng Thành thuộc thị xã Gia Nghĩa trên cơ …Labor: 1.0. To diagnose the P1739 Honda 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.2002 Honda Accord 4 cylinder throwing code p1456 and p1739. 2002 Honda Accord 4 cylinder throwing code p1456 and p1739. Left my good scanner at work and only had a cheap one to check it with. ... 1998 Honda Accord LX 4 cyl auto-check engine light came on-codes P0420-catalyst sys efficiency below threshold-what can be …1999 Honda Accord LX 3.0L. I got a p1456 code and changed the gas cap what should i do next. asked Apr 19, 2017 by anonymous. p1456; honda; accord; 37.4k questions 31.6k answers 1.3k comments 22.5k users Need A Repair Shop? Find local automotive repair shops in your area. AutoCodes.com Shops. Does your car have Safety …

Jack up both rear wheels of your Honda Accord, Civic, and CR-V. Place jack stands to support the vehicle. Slide under the vehicle and locate the charcoal canister shut-off valve. A metal shield may cover the unit on some models, such as Honda CR-V. Remove the 13mm bolt for the metal shield. We strongly recommend spraying …A Technician. Vocational, Technical or Tra... 12,126 satisfied customers. Odyssey: Today my 2002 Honda Odysseys check engine light came. Today my 2002 Honda Odyssey's check engine light came on. Got two OBDII codes, P1456 and P1740. P1456 - EVAP Emission Control System … read more.l have 2001 accorg skip speed the code is p1456 can your guys help me - Honda 2001 Accord question. Search Fixya. Browse Categories Answer Questions . 2001 Honda Accord; Honda Accord Car and Truck; Honda Car and Truck; Cars & Trucks; All Recent; Join; Sign In ... Question about 2001 Honda Accord. 1 Answer . L have 2001 accorg …To test the theory that the leak is where I suspect it is located, I applied some caulk to try to patch the leak. I will drive it this way for a few weeks to see if the engine light and P1456 come back. Our New Saudi Iqama Check App Free Download :https://play.google.com/store/apps/details?id=appinventor.ai_obdksa.saudi_iqama_check&hl=enMy New Channel Click ...P1456 Code Fixed On Honda PilotThis video shows you How to Fix Engine Code P1456 in the easiest way and correctly . Practical and simple DIY solution anyone ...What is the Cost to Diagnose the Code P1454 Honda? Labor: 1.0. The cost to diagnose the P1454 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.19 nov. 2010 ... But still got the same error code. So I read all the forums/blogs on this issue across all Honda models (including Accords, CRV's, etc.) and ...Hi there. This code doesn't mean you have a fuel leak. It means you have an evap leak in the car. This code has a few possible causes. Here is some more info on them.Nov 15, 2009 · Customer Concern: The engine runs, but the Malfunction Indicator Light (MIL) is on and trouble code P1456 is set. This code indicates that the Powertrain Control Module (PCM) detected a leak on the fuel tank side of the Evaporative Emissions (EVAP) system. Tests/Procedures: 1.

P1456 Honda Accord 2002 Codes P0300, P0301, P0302, P0305, P1456. Web at $79k, it was only about $3k more expensive than the 1.6. My vehicle is a 2002 honda accord se with 158k miles on it. Web i have 2002 honda civic lx want to fix fault codes p1456 & p1457 what are these codes and what needs to be fix. Web Most …

In a V6 or V8 engine, if there is a code P0154 Oxygen (A/F) Sensor No Activity Detected (Bank 2 Sensor 1) stored along with the P0134, the problem is more likely not with the oxygen sensors, as both sensors would not go at the same time. First, the air/fuel ratio sensor connector, as well as the sensor power and ground must be checked.Code P1456 Information for Specific Makes. P1456 Acura Evaporative Emissions Control System Leakage Fuel Tank 📷. P1456 Audi Exhaust Gas Temperature Control Bank 1 Limit Attained. P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank 📷. P1456 Infiniti Evaporative Emission Control System Leak Detected Small Leak 📷. Nov 3, 2021 · We would like to show you a description here but the site won’t allow us. - Foreign matter caught in fuel filler cap There is a Honda factory service bulletin with information on how to diagnose the P1456 on the following Honda models: 1998 Honda Accord 1999 Honda Accord 2000 Honda Accord 1998-2000 Honda Accord symptoms- Engine Light ON (or Service Engine Soon Warning Light) If the code still exists, remove it, inspect it for cracks or damage, and clean it thoroughly. The most common reason for the P1457 code is a damaged or worn-out cap. The caps are cheap and easy to replace. If the gas cap replacement does not clear the code, inspect the EVAP’s canister side vacuum lines.Save. greg1c · #3 · Dec 10, 2015. The P1456 evap code is for a pressure loss between the tank and the filler. This is normally the gas gap not tightened fully. The vehicle has to run through 2 driving cycles and 2 complete evaporative test on the evaporative system before the check engine light will go out.With Honda vehicles, the P1457 DTC means that there’s a leak detected in the EVAP system. Other manufacturers use the code to signify that the EVAP system can’t maintain proper vacuum in the fuel tank. While these are different definitions, they could ultimately mean the same thing. The EVAP system is made from several critical parts ...hello im new here...i have a 98 honda accord ex v6, i bought it few months ago and now the engine light came on.....i took the car to advanceautoparts for a scan, and they gave me 2 codes, first one is p1456 and the other is p1739.....i tryied to find info about them, but i can't find anything that i can understand....does anybody know what that means? the only thing i know is that is has ...P1456 is an OBD-II code that indicates an issue with your Honda’s EVAP system. To prevent fuel vapors from escaping into the atmosphere, your Honda’s EVAP control system temporarily stores them …

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The miles per gallon estimates for the Honda Accord vary depending upon the model. The EPA rating for a four-cylinder 2014 Accord is 26 mpg in the city and 34 mpg on the highway. For a six-cylinder model, the rating is 21 in the city and 32...Code P1456 is an evaporative emissions code referring to the fuel cap area. Usually this is caused by a gas cap not being tightened fully when filling up gas. Check to see if it seems somewhat loose, it should be tight to the point where it clicks at least 3 times. Make sure it is a honda gas cap also, as many aftermarket ones do not properly seal.For a 2000 Honda Accord LX, the check engine code P1456 simply means that your gas cap is off or isn't tight enough. It wont go off immediately. It make take up to a weak for the check engine light to turn off once the gas cap is tightened enough.-----Renault CAN Clip. Read full answer. Dec 10, 2012 • Cars & Trucks. 3 helpful. 1 answer. My car …Apr 10, 2019 · Most common reason causing this code on Honda vehicles and how to prevent this from happening again. SOURCE: my 2000 honda civic engine light on code p1456. Hey I had the same code and I have a 2000 honda civic lx. My cousin works at honda and drives a '96 honda civic and he has had that code before on his car as well. First thing he came up with was that the catalytic converter was cracked. We checked mines, and lo and behold, that's what it was.P1456 is a Honda manufacturer specific code for Evaporative Emissions Canister Leak Detected. Honda has a Technical Service Bulletin about that code that you should read but most often that code is caused either by a bad seal on the gas cap, or the cap no being tight enough.P0456 is an evaporative emissions system code. That’s the system that checks to make sure your fuel tank isn’t spewing fuel vapor into the atmosphere. For this Honda fit, P0456 indicates there is a “very small leak” in the system. How small? About the size of a .020″ hole, although it doesn’t have to be just one hole.Honda defines OBD II fault code P1259 as “VTEC System Circuit Fault (Bank 1),” a manufacturer-specific code. PCM (Powertrain Control Module) is set when Bank 1 VTEC sensor detects a defect, malfunction, or failure in its electrical control and monitoring system. VTEC, or Variable Valve Timing & Lift Electronic Control, is Honda’s ...Diagnosing and repairing a Honda Civic with check engine light on. Engine code P1456 for a fuel vapor leak.Faulty EVAP Two-Way Valve Faulty EVAP Bypass Solenoid Valve Faulty EVAP Canister What does this mean? Code P1456 Honda Tech Notes Usually, a loose or bad fuel tank filler cap will trigger these codes. Retighten the fuel tank filler cap and erase the code to repair the problem. Accord has engine code P1456; EVAP emission control system leak detected (fuel tank system). What does - Answered by a verified Mechanic for Honda. We use cookies to give you the best possible experience on our website. ... HOnda Accord 1998 EX, V6:Trouble codes P0108 (Map/baro ckt high input);P0113 (IAT sensor 1 ckt … ….

Hi, P1456 is a an OBD2 trouble code that is stored in the vehicle's computer. The definition of the code is "EVAP System Leak Detected". Your car's on-board computer has detected a fault in the EVAP (Evaporative Emission) system. In most cases, this code will not affect the way your vehicle drives. It is very difficult to approximate the cost ...The EVAP captures any raw fuel that evaporates from the fuel storage (fuel cap, fuel tank, and filler cap). These captured fuel vapors are sent back to the combustion process by the EVAP system, under precise operating conditions, which is dictated by the speed, load and temperature of the engine.1999 Honda Accord LX 3.0L. I got a p1456 code and changed the gas cap what should i do next. asked Apr 19, 2017 by anonymous. p1456; honda; accord; 37.1k questions 31 ...Shop oxygen sensor lambda sensor with free shipping and free return. Oxygen sensor supplier replacement part for the oxygen sensors. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return.SOURCE: i have a 01 honda accord 2.3l it has a obd fault. code p1456 : EVAP Control System Leakage ( fuel tank system). try check the fuel fill cap. It must be a gray or black OEM cap and be tightened at least 3" clicks" to properly seal the system. Posted on Apr 15, 2010If you have a 1999-2003 Honda Odyssey with a EVAP system code of P1456 then the problem is possibly a faulty 2 way valve and bypass solenoid. ... If you have a 1999-2003 Honda Odyssey with a EVAP ...Shop oxygen sensor lambda sensor with free shipping and free return. Oxygen sensor supplier replacement part for the oxygen sensors. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return.This 2000 Honda Accord EX 4 Cylinder VTEC with 305,000 miles is due for Inspection. But there are 4 diagnostic trouble codes setting off the dreaded Check En...Jan 14, 2014 · Honda check engine light on? Here is a canister vent shut valve test for code p1456 and p1457, simple and easywww.SimpleCarAnswers.com So in summary, the problem causing the p1456 code was a leak at in the ORVR valve (the one that is mounted on top of the fuel tank. The top popped off the little can in the front part of the valve where the hose from the two way valve connects. Inside is a steel ball and a spring. P1456 honda accord, In a V6 or V8 engine, if there is a code P0154 Oxygen (A/F) Sensor No Activity Detected (Bank 2 Sensor 1) stored along with the P0134, the problem is more likely not with the oxygen sensors, as both sensors would not go at the same time. First, the air/fuel ratio sensor connector, as well as the sensor power and ground must be checked., YourCarSpeci... of Your Car Specialists on January 09, 2014. Code P1456 is an Evaporative System Code & is unrelated to the other 2 codes. It could be as simple as a loose or bad fuel cap however keep in mind that if you find it loose & tighten it the light may not go out right away. If you need further help or need the vehicle diagnosed please ..., Pinout of Honda OBD II diagnostic interfaceobd 2 used in Honda cars produced after 1996's. Pinouts / Devices / Connectors. ... Honda Accord Coupe: Gasoline (198 HP) 2001: ISO 9141-2 : Honda CITY TYPE Z: Gasoline (155 HP) 1999-Honda Civic : 1996: ISO 14230-4, ISO 9141-2 : 2000: ... P1456. EVAP Emission Control System Leak …, Honda Accord. Serpong 6 hari yang lalu. Rp 132.000.000. 2008 - 125.000-130.000 km. Honda Accord. Karang Tengah 7 hari yang lalu. muat lainnya. Daftar Mobil Bekas Banten yang Laku Keras di Internet. Banten merupakan provinsi di Pulau Jawa hasil pemekaran dari Jawa Barat. Meski terbilang baru, hampir semua wilayah Banten sudah memiliki ..., Mancung Motor adalah salah satu Dealer Honda populer di Tangerang. Dealer ini terletak di J.l Raya Serang km 19 RT 15 RW 6, Kelurahan Bojong, Kecamatan Cikupa , Tangerang, 15710 dan Anda bisa mengunjunginya untuk test drive, mendapatkan penawaran terbaik, membeli motor Honda Indonesia., 1998 Honda Accord LX 4 cyl auto-check engine light came on-codes P0420-catalyst sys efficiency below threshold-what can be done to fix this and P1456-evap emission contol system leak detected - were p …, Code P1456 Honda Tech Notes. Usually, a loose or bad fuel tank filler cap will trigger these codes. Retighten the fuel tank filler cap and erase the code to repair the problem. There is a Honda factory service bulletin with information on how to diagnose the P1456 on the following Honda models: 1998 Honda Accord., Overview of how to fix a Honda with a P1456 EVAP Emission Control System Leak Detected OBDII error code., Faulty EVAP Two-Way Valve Faulty EVAP Bypass Solenoid Valve Faulty EVAP Canister What does this mean? Code P1456 Honda Tech Notes Usually, a loose or bad fuel tank filler cap will trigger these codes. Retighten the fuel tank filler cap and erase the code to repair the problem. , P1456 is an evaporative system code (usually a loose or defective gas cap) on the fuel tank system. Code 1457 is on the canister side of the system. Posted on ..., Code P1456 Information for Specific Makes. P1456 Acura Evaporative Emissions Control System Leakage Fuel Tank 📷. P1456 Audi Exhaust Gas Temperature Control Bank 1 Limit Attained. P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank 📷. P1456 Infiniti Evaporative Emission Control System Leak Detected Small Leak 📷., P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank Suggest you take an have a qualified repair shop diagnose the problem . Read full answer Oct 08, 2016 • 2002 Honda Accord, SOURCE: unlock radip code,1998 honda accord 4 door. Try these things. Why don't you call the Honda customer service at 1-800-999-1009 have your radio serial number and VIN to your car and they will help you to unlock your radio. If you don't have the serial code to your radio and you are the original owner they will tell you have to get the ..., Honda Accord P0456 OBDII Code Symptoms. P0456 code will typically not be accompanied by any noticeable symptoms other than the smell of gas and the service engine soon light.. Gas Smell– You may smell fuel vapor around the fuel tank area or fuel filler tube.; Check engine light– P0456 may be accompanied by other EVAP-related …, P1399 Honda Description When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring., i just finished with a bit of research about code p1456 and fixed my problem on my Honda Accord 1999.This code is strickley related to the two-way-valve not working that is part of your EVAP system for fuel vapor collection.The gas cap is also possibility but usually not the main answer to this code.I recommend you change out the 2-way-valve ..., Honda civic gas cap leak code - p1456 evap control system leakage (fuel tank system). Quick easy fix.Like comment share and subscribe for more videos. Thank ..., Aug 14, 2023 · To diagnose the P0141 Honda 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. , When the low gas light is on, a Honda Accord can travel for an additional 46.81 miles or just over 75 kilometers. The distance a Honda Accord travels past this point depends on fuel usage., How to trouble shoot P04562019 Honda Civic with a P0455P1456p14562019 Honda Civic HondaHonda Civic Smoke test evap leaksEvaporated emissions Emissions System, Apr 24, 2018 · Where is the P1456 sensor located? The image above shows a schematic diagram of the EVAP system on most Honda applications. Note that although all labeled parts are common sites for leaks, the area in the red oval indicates the most common sites for leaks that relate to code P1456 on the following Honda models-2002-04 CRV; 2002-03 S2000; 2002 ... , Once the PCM detects a minor leak based on the data provided in the leak detection process, it’ll trigger the P1456 code. Note: The definition of the P1456 code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition. What Are the Common Causes of the …, P1456 is an OBD-II code that indicates an issue with your Honda's EVAP system. To prevent fuel vapors from escaping into the atmosphere, your Honda's EVAP control system temporarily stores them in a canister. Through the intake manifold, it enters the engine and is burned., Code P1456 Honda Tech Notes. Usually, a loose or bad fuel tank filler cap will trigger these codes. Retighten the fuel tank filler cap and erase the code to repair the problem. There …, Jun 2, 2011 · The p1456 code is an evaporative system code that is not related to the transmission. The p1739 is a transmission switch code but it should be ignored unless you have ... , 1998-2000 Honda Accord Factory Service Bulletin OBDII Code p1456 Troubleshooting DTC P1456 (EVAP system leakage [fuel tank system]) in a 2003-2004 Pilot? Pinch off all the hoses between the fuel filler neck and the fuel tank, and retest. If the leak stops, replace the fuel fill cap first., The P1456 code indicates a problem with the EVAP Control System (Evaporative Emission Control System). The EVAP is responsible for collecting and temporarily storing fuel vapors from the fuel tank to stop them from escaping into the atmosphere. The collected vapors are re-injected into the engine via the intake manifold, where they can be burned. , This 2000 Honda Accord EX 4 Cylinder VTEC with 305,000 miles is due for Inspection. But there are 4 diagnostic trouble codes setting off the dreaded Check En..., Nov 3, 2021 · We would like to show you a description here but the site won’t allow us. , Why is my 2009 2.4L Honda Accord going into limp mode and dipping rpm at idle. Passenger side blows cold air, driver side warm air; Is there a recall on the ignition switch on 2004 accord couoe; Is it worth it to fix a 2006 Honda Accord with 200K miles on it? Brake overheating, P0135 is a very common OBDII code that occurs in the Honda Accord. It is caused by a failure in one of the oxygen sensor's heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1 The purpose of the heated., HONDA ACCORD—P1399, P0301, P301 MISFIRE CODES - QUICK FIX How to see if you have a bad ignition coil causing misfires.Click here to order a new set of 6 i..., 2002 Honda Accord 4 cylinder throwing code p1456 and p1739. 2002 Honda Accord 4 cylinder throwing code p1456 and p1739. Left my good scanner at work and only had a cheap one to check it with. ... 1998 Honda Accord LX 4 cyl auto-check engine light came on-codes P0420-catalyst sys efficiency below threshold-what can be …