Honda trouble code p1399

suprchrgedsi. 53 posts · Joined 2003. #7 · Feb 16, 2006. REPLY TO ENGINE CODES PO301-P0304 P1399 MISFIRE RANDOJM MISFIRE. THESE CODE ARE FROM AN ACUTRON CHEAPY OBD2 SCANNER I TRIED THE CAP ROTOR AND INJECTOR BECAUSE IT SEEMED I HAD A DEAD CYLINDER EVERYONE WAS LIKE YOUR GONNA HAVE TO REBUILD YOUR HEAD WELLL IN MY LAST ATTEPMT AT FIXING IT I ...

Honda trouble code p1399. There are a few steps you can take to diagnose the P0300 code in your Honda Accord without taking it to a mechanic: 1. Check for loose or damaged spark plugs: Inspect the spark plugs and their wires for any signs of wear, damage, or loose connections. Replace any faulty spark plugs or wires. 2.

THIS and THIS are the only threads I found with 1399 relating to the v6, but they're not anything solid on how to go about fixing the issue. The only thing I've gathered from the 1399 is that it's a random cylinder misfire code. My Accord has thrown specific and random mis-fire codes before, p0300 - p0306, but it has only happened due to the ...

Honda civic code p1399 what is it and how can i fix this problem. Posted by emiljohn_898 on Nov 06, 2009. Want Answer 0. Clicking ... Trouble Code p0420 and p1399. code po420 refers to cat converter system bank1 - efficiency below threshold===causes -- cat converter---wiring---HO2S 2P1399 trouble code on a 2004 Honda Odyssey. Vehicle has 293,000 miles. TPS sensor, thermostat, coolant temp sensor, idle air control sensor, and mass air flow sensor have all been replaced, Cat system …Mar 24, 2018 ... 3:31. Go to channel · What Is a Honda P1399 Random Cylinder Misfire Detected Engine Code? HVAC Mechanic •11K views · 8:12. Go to channel ...Jan 17, 2024 · To diagnose code P1399 in a Honda Accord, follow these steps: 1. Retrieve the trouble codes: Use an OBD-II scanner to retrieve the specific trouble codes, including P1399. 2. Inspect the ignition system: Check the condition of the spark plugs, ignition coils, and ignition control modules for any signs of wear or damage. 3. March 7, 2021 by Jason. P1399 is a Honda specific diagnostic trouble code. It means that more than one of your Accord’s cylinders is misfiring (maybe just one, more on that …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. God-Bless!

The only time I have noticed it misfiring is at idle and its not a common occurrence. It is just every now and then and it seems to only happen when the car is warmed up. I have 7 fault codes. P0301, P0302, P0303, P0304, P0401, P0300, and P1399. P0300-P0304 are all misfire codes and P0401 is for the EGR insufficient flow.THIS and THIS are the only threads I found with 1399 relating to the v6, but they're not anything solid on how to go about fixing the issue. The only thing I've gathered from the 1399 is that it's a random cylinder misfire code. My Accord has thrown specific and random mis-fire codes before, p0300 - p0306, but it has only happened due to the ...During the first two weeks Honda's new HR-V was on the market, an impressive 6,381 of the tiny crossover SUV were sold. That's triple the rate of any other model in its category d...The 2002 Honda Accord is a mid-sized sedan with a 2.3 liter, 4-cylinder engine. It has been equipped with the P1399 code, which is associated with an engine misfire. This code indicates that the engine control unit (ECU) has detected an issue in one or more of the cylinders and is attempting to compensate by adjusting the fuel and spark timing.Feb 18, 2016 · Recommended Services. On Honda vehicles the OBD code p1399 indicates that there is a random misfire occurring in the engine. In most cases a valve adjustment will correct this issue, however a blocked passage in the EGR (Exhaust Gas Recirculation) system can also generate this same code. Valve adjustments should be performed on Honda vehicles ...

P1399 is a Honda specific diagnostic trouble code. It means that more than one of your CR-V's cylinders is misfiring (maybe just one, more on that below), and is most common fix is to adjust the valve lash or replace the bad ignition component. P1399 Quick Facts Most commonly caused by valves that are out.The P1399 code is a diagnostic trouble code (DTC) that indicates a misfire in one or more cylinders of an engine. It can occur in both gasoline and diesel engines, and it is commonly found on Honda vehicles. When the powertrain control module (PCM) detects a misfire, it will set the P1399 code and turn on the check engine light.2000 Odyssey misfire, codes p0300-306 and P1399. I have spent the last few weekends trying to find the culprit for my misfire codes (P0300-306 and P1399), but no luck finding the issue. I have a 2000 Honda Odyssey EX w/ 135,000 miles. I am starting to suspect the fuel pump/filter but want to be sure before buying a new one.Code P1399 , OBD2 H22a4. I am making this post to hopefully help somebody in the future. Diagnostic codes: P1399, P0300 ,P0301 ,P0302, P0303, P0304. Most information will tell you that more than likely it is the EGR Port passages that need to be cleaned out, which most of the time is correct and in this case it was definitely needed.Causes. Common causes for this code include: A valve that is not opening, or is stuck open. A faulty spark plug. Low fuel pressure. Blocked exhaust pipe. Symptoms. The …Trouble Codes. P Codes (Powertrain) P1300 - P1399. P1382. HONDA ACCORD P CODES (POWERTRAIN) P1300 - P1399 P1382 ... I Have A 1996 Honda Accord That Has Almost 109,000 ...

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The automobile fault code P1399 indicates a problem with the valve clearance or blocked EGR (exhaust gas recirculation) passages. Symptoms may include rough idling, engine …PCM P0301 indicates enough misfire events on cylinder 1 for the powertrain control module (PCM) to store the misfire code. There is a misfire in cylinder 1 or a randomly occurring misfire. If there are no leaks in the intake, check the spark plugs for cylinder 1 and replace them if necessary. It may be necessary to perform more tests to ... It ran fine for quite a few months after that and recently started to do it again. I had someone pull the codes for the check engine light and the result was a code p1399 and Cylinder misfire detected on Cylinder 1. With the probable causes being 1. Ignition system fault spark plugs 2. Vacuum leak 3. Mar 26, 2019 · 2004 P1399 (multiple cylinder misfire) code with diagnostics. I have a 2004 with 288K miles on it and this is the first time my van has set a code since I got it at 40K miles in 2007. Though I have already determined the cause of the code I thought I would share my symptoms along with how I diagnosed it. Some background. March 7, 2021 by Jason. P1399 is a Honda specific diagnostic trouble code. It means that more than one of your Accord’s cylinders is misfiring (maybe just one, more on that …Mar 7, 2021 · P1399 is a Honda specific diagnostic trouble code. It means that more than one of your Pilot's cylinders is misfiring (maybe just one, more on that below), and is most common fix is to adjust the valve lash or replace the bad ignition component. P1399 Quick Facts Most commonly caused by valves that are out.

My code reader only gave me code P1399. I looked on the forum and found several post for this issue. Most of them also listed codes for the ignition coils. Some also mentioned the EGR valve. I took the EGR valve off and cleaned it. I went to Advance Auto and picked up a coil for $45.Step 5: Clear the Trouble Code and Test Drive. After completing the necessary repairs or maintenance steps, it’s important to clear the trouble code from the PCM. Use your OBD-II scanner or code reader to erase the code and reset the check engine light. Once cleared, take your 2002 Honda Accord for a test drive to ensure the misfire issue has ...P1399 is a Honda specific diagnostic trouble code. It means that more than one cylinder is misfiring, and is most commonly caused by valves that are out of adjustment, or ignition issues. P1399 Quick Facts1399 - blocked EGR passage or valve clearance out of range. I was shocked how the all of a sudden I got these code and that too not 1 but 4 . I ...Accord. 2000. The 2000 Honda Accord v6 code P1399 means there is a random mIS Fire in the engine. A random mIS Fire code usually means the air/fuel mixture is running lean. But the cause might be anything from a hard-to-find vacuum leak to d***y fuel injectors, low fuel pressure, a weak ignition coil, bad plug wires, or compression …Jan 15, 2024 · There are several possible causes for Honda code P1399, including: Ignition system problems such as faulty spark plugs, ignition coils, or spark plug wires. Fuel system issues such as clogged fuel injectors or a malfunctioning fuel pressure regulator. < Engine mechanical problems like low compression or a vacuum leak. Honda cr p1399 revealed details oopscars eu metallic india Honda code p1399 civic 1999 source Honda crv p0301 Q&a: 2001 honda crv no spark. ... HOW TO FIX HONDA CRV ERROR CODE P2646 - The Simple Entrepreneur - Marco. Check Details. Zawor Egr Honda Crv 22. Check Details.A P1399 trouble code in some Honda Accords is usually caused by a fault or damage in the cylinder head, cylinder head gasket, and fuel injectors. In most cases, the malfunction indicator lamp will flash on acceleration at 2,500-3,500 rpm once this code is set.Sep 29, 2022 · How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins. Search for P1399 Honda Questions and Answers. Possible Symptoms. Engine Light ON (or Service Engine Soon Warning Light) Lack/loss of power. LG washers are known for their efficiency and reliability, but like any other appliance, they can encounter issues from time to time. One of the ways LG washers communicate problem...

I have a 98 Honda CRV that had P0104 and P0103 and P1399 codes. I replaced the plugs and wires with no change. I performed a compression test on all four cylinders and results seemed fine. Compression Test Results: Cylinder 4 – 160 (Dry)/200 (Wet) Cylinder 3 – 150 (Dry)/185 (Wet) Cylinder 2 – 145 (Dry)/190 (Wet) Cylinder 1 – 150 …

5 days ago · Step 5: Clear the Trouble Code and Test Drive. After completing the necessary repairs or maintenance steps, it’s important to clear the trouble code from the PCM. Use your OBD-II scanner or code reader to erase the code and reset the check engine light. Once cleared, take your 2002 Honda Accord for a test drive to ensure the misfire issue has ... P1399 is a Honda specific diagnostic trouble code. It means that more than one of your Shuttle's cylinders is misfiring (maybe just one, more on that below), and is most common fix is to adjust the valve lash or replace the bad ignition component. P1399 Quick Facts Most commonly caused by valves that are out.This CR-V has close to 250K miles and had not had much love in recent years. This is a 2.0L B20 engine & auto trans. Initially, it had misfire codes of P0302, P0304 & P1399 (a Honda specific random/multiple misfire code) and infrequently will set a P0300. As part of a maintenance service about 6+ months and 8K miles before the misfires …For manufacturers willing and able to make in America, the IRA is a blessing—for all others, it’s a spoke in their wheel. Japan’s Honda and South Korea’s LG have together earmarked...March 5, 2021 by Jason. P1399 is a Honda specific diagnostic trouble code. It means that more than one cylinder is misfiring, and is most commonly caused by valves that are …195000. master tech : ok the first place I would be looking at is the data list on a advanced engine scanner. Customer: scanned code P1399 what that mean. master tech : this will show the map and fuel trims. master tech : p1399 is for random misfires.The P1399 random misfire along with one or more of these codes: P0301, P0302, P0303, P0304 -- indicates a problem with the valves. The B20 engines in the 1997-2001 CR-Vs are known to have problems with valves tightening and then 'burning'.Apr 9, 2020 · The 2000 Honda Accord v6 code P1399 means there is a random mIS Fire in the engine. A random mIS Fire code usually means the air/fuel mixture is running lean. But the cause might be anything from a hard-to-find vacuum leak to d***y fuel injectors, low fuel pressure, a weak ignition coil, bad plug wires, or compression problems. Even a d***y MAF sensor can cause a lean code and/or mIS Fire to ... The original Bubble Trouble game has 17 levels. Newer versions of the game exist, which expand on the number of levels up to 21. Some players have posted strategy guides and cheat ...

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I have a 2001 honda accord. Check engine light on, code is P1399 #1 cylinder misfire. I changed all 6 plugs, came back on. changed #1 coil pack, came back on. Nothing was done to the car before check … read moreI have a 2000 Honda Accord. Trouble codes P0303 and P1399 were pulled after the malfunction light came on on the dash yesterday. I am told they represent cylinder 3 misfire and ignition issue. The car … read moreP1399 is a Honda specific diagnostic trouble code. It means that more than one of your HR-V's cylinders is misfiring (maybe just one, more on that below), and is most common fix is to adjust the valve lash or replace the bad ignition component. P1399 Quick Facts Most commonly caused by valves that are out.Code P1399 is a diagnostic trouble code that typically indicates a random misfire in one or more cylinders of the engine. It is a common issue that Honda Accord …The trouble code “P0172 system too rich” means there is too little oxygen in the exhaust. This error code is triggered by an oxygen sensor in bank one, the side of the engine with ...Mar 7, 2021 · P1399 is a Honda specific diagnostic trouble code. It means that more than one of your Civic's cylinders is misfiring (maybe just one, more on that below), and is most common fix is to adjust the valve lash or replace the bad ignition component. P1399 Quick Facts Most commonly caused by valves that are out. Codes P1399, P0505, P0325. I just replaced the engine in a 2002 Accord with a Vtech 4cyl. It runs fine at idle. When it's cold it fluctuates RPMS when you hold it steady around 2000 rpms. It will fluctuate between 1000 and 2000. It threw code P0505 first so I took off the IACV and replaced it.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. God-Bless!HONDA MOTOR CO. LTD.DL-NOTES 2022(22/25) (US438127AA08) - All master data, key figures and real-time diagram. The Honda Motor Co. Ltd.-Bond has a maturity date of 3/10/2025 and off...Craig92DA9. 210 posts · Joined 2005. #2 · Feb 27, 2012 (Edited) A flashing check engine light indicates a catalyst damaging misfire. Honda does not supply a diagnostic flow chart for code P1399, it is a random misfire code and Honda/Acura has reported for various models that this could be caused by clogged EGR ports (if aplicable).(RTTNews) - Honda, the world's largest motorcycle manufacturer, has announced its plans to launch electric motorcycles. Honda announced it would ... (RTTNews) - Honda, the world's...March 7, 2021 by Jason. P1399 is a Honda specific diagnostic trouble code. It means that more than one of your Accord’s cylinders is misfiring (maybe just one, more on that … ….

Jan 14, 2007 · Honda Civic Gen Tech and Builds / Show Offs. ... Trouble code: P1399? Thread starter kandyapple_si; Start date Jan 14, 2007; kandyapple_si New Member. 5+ Year Member. Jun 24, 2018 · P1399 and misfire codes. 03 164k. About a month ago I noticed a roughness when starting the engine. This would settle out after a few moments running. Sometimes while in park the engine will seem to surge up a little then back down. Then about 2 weeks ago check engine light on. Pulled the codes and got #2 cylinder misfire. I have OBD-11 code P1399 Pd on my 1999 honda crv ex, I know the Pd means pending. I can't find code P1399. Answered in 12 hours by: Mechanic for Honda: Michael. Hello.This is a vehicle specific code.It means that random multiple misfires have occured.Multiple misfires can be caused by many things,such as,bad wires,plugs,ignition control module ...Just this past Sunday my engine started running really rough and the check engine light started flashing. The OBD II codes are P0300-P0304 and P1399 (P0300- random / multiple misfire, P030x = Cylinder x misfiring, P1399 = Manufactures control Ignition system OR Misfire). Per advice found on this forum, I pulled each of the plugs to see if it ...Labor: 1.0. To diagnose the P1399 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.Jan 26, 2013 · SOURCE: 2003 Honda Oddyssey - PO325 Knock Sensor. If The engine in your van is a 3.5L, the knock sensor is under the upper intake manifold. This has to be removed in order to access the sensor on top of the engine block. The job requires an upper intake gasket set and about 1.5 hours to do; if you are handy with tools. Honda Civic Gen Tech and Builds ... Trouble code: P1399? Thread starter kandyapple_si; Start date Jan 14, 2007; kandyapple_si New Member. 5+ Year Member. Jan 14, 2007 #1 I am soo confused about this damn code... i cant figure out why my car is pulling it!! Does anyone on here know what it is and how to fix it!! its on a 00 si Thanks ...Sep 29, 2022 · How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins. Search for P1399 Honda Questions and Answers. Possible Symptoms. Engine Light ON (or Service Engine Soon Warning Light) Lack/loss of power. Sep 19, 2022 · Overview of the causes and fixes of a Honda with a P1399 OBDII Engine Code, Random Cylinder Misfire Detected.Read more information here: https://www.backyard... The 1969 Honda Dream 305 motorcycle combined power with convenience. Read about this important Honda and see pictures of a real dream machine. Advertisement The 1969 Honda Dream 30... Honda trouble code p1399, Trouble code p1399. What should I do? - Answered by a verified Mechanic for Honda. ... I have a 2000 Honda Accord. Trouble codes P0303 and P1399 were pulled after the malfunction light came on on the dash yesterday. I am told they represent cylinder 3 misfire and ignition issue., 1. Check the owner’s manual: The radio code may be written down in the owner’s manual that came with your Honda CR-V. Look for a section specifically dedicated to the radio code. 2. Check the glove box: Another common place to find the radio code is in the glove box. Look for a sticker or a card that has the code printed on it., 2000 Odyssey misfire, codes p0300-306 and P1399. I have spent the last few weekends trying to find the culprit for my misfire codes (P0300-306 and P1399), but no luck finding the issue. I have a 2000 Honda Odyssey EX w/ 135,000 miles. I am starting to suspect the fuel pump/filter but want to be sure before buying a new one., The trouble code is coming up po302 and p1399 The first code is easy misfire #2 cylinder the second code is non specific for the honda listing, The OBD II scanner says ignition control, manufacture pending, does this mean honda is waiting to update their code list?, Honda crv 2000 computer reset. Ok, 1. ensure ignition off. 2 . bridge the 2 pin connector, Put a piece of wire across both terminals. 3.switch ignition on. 4. SRS lamp should illuminate for 6 seconds. 5.disconnect the bridge wire within 4 seconds of the warning lamp extinguishing. 6.SRS lamp should illuminate 2 times, Codes erased., Honda code P1399 refers to a specific diagnostic trouble code (DTC) that indicates a misfire detected by the engine control module (ECM) in a Honda vehicle. …, 1999 honda crv 2.0 dohc code 1399. did complete tune up and adj. valves to specs under hood still runs very bad ... Each individual cylinder brings up a trouble code for misfire along with the trouble code P1399 . I've installed new wires , plugs , rotor and cap ., P0301 is a fairly common trouble code with the Honda Odyssey. It’s an OBD2 code and indicates that your van’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your Odyssey. Fixing P0301 should be considered a high priority., A P1399 trouble code in some Honda Accords is usually caused by a fault or damage in the cylinder head, cylinder head gasket, and fuel injectors. In most cases, the malfunction indicator lamp will flash on acceleration at 2,500-3,500 rpm once this code is set., Posted on Jan 04, 2011. From www.hondasuv.com: The P1399 random misfire along with one or more of these codes: P0301, P0302, P0303, P0304 -- indicates a problem with the valves. The B20 engines in the 1997-2001 CR-Vs are known to have problems with valves tightening and then 'burning'. So the first question is when was the last time you ..., The Honda Civic Hybrid System - The Honda Civic hybrid system has some unique features. Learn all about the Honda Civic Hybrid system at HowStuffWorks. Advertisement If ever two au..., I have a 98 Honda CRV that had P0104 and P0103 and P1399 codes. I replaced the plugs and wires with no change. I performed a compression test on all four cylinders and results seemed fine. Compression Test Results: Cylinder 4 – 160 (Dry)/200 (Wet) Cylinder 3 – 150 (Dry)/185 (Wet) Cylinder 2 – 145 (Dry)/190 (Wet) Cylinder 1 – 150 …, Code p1399 is brand specific and for Honda it usually means random miss. The code 505 could be the idle control valve or a vac leak. The computer can not control idle speed by using the valve. The miss codes mean the cylinders are not producing power when they should be. Which may or may not be ignition. It could also be fuel or …, Honda Snowblower, Honda Outboard and Honda Lawnmower ... P0304, P0305 and P0306. Pending code P1399. Working on the EGR tonight. 2001 Odyssey EX, 180k miles, Honda ..., Welcome to The Honda Forums! Welcome to the Honda Forums where you can ask questions or find answers on anything related to your Honda car. Please join our friendly community by clicking the button below - it only takes a few seconds and is totally free. You'll be able to ask questions about your car or chat with the community and help …, Trouble Code p0420 and p1399. 1999 Honda Civic; Open Questions: 0 answers. Green flashing key shows and engine cuts out wait 5 min start car drive so far and happens again Honda Accord 2000 The green flashing light appears on my Honda Accord 2000 then the engine cuts out I wait 5 minutes restart the engine I can drive so far and green key ..., For manufacturers willing and able to make in America, the IRA is a blessing—for all others, it’s a spoke in their wheel. Japan’s Honda and South Korea’s LG have together earmarked..., x0ml Discussion starter. 4 posts · Joined 2012. #1 · May 14, 2012. I have a 2002 Odyssey getting OBD Codes P0300, P0301, P0303, P0304, P0305, P0306, and P1399. The engine just starting running horribly rough overnight. The OBD code reader says 'Random/Multiple Cylinder Misfire detected. What would cause all they cylinders to …, Craig92DA9. 210 posts · Joined 2005. #2 · Feb 27, 2012 (Edited) A flashing check engine light indicates a catalyst damaging misfire. Honda does not supply a diagnostic flow chart for code P1399, it is a random misfire code and Honda/Acura has reported for various models that this could be caused by clogged EGR ports (if aplicable)., THIS and THIS are the only threads I found with 1399 relating to the v6, but they're not anything solid on how to go about fixing the issue. The only thing I've gathered from the 1399 is that it's a random cylinder misfire code. My Accord has thrown specific and random mis-fire codes before, p0300 - p0306, but it has only happened due to the ..., During the first two weeks Honda's new HR-V was on the market, an impressive 6,381 of the tiny crossover SUV were sold. That's triple the rate of any other model in its category d..., Honda CR-V Owners Club Forums, Good morning, Quartz readers! Good morning, Quartz readers! France celebrates Bastille Day. This year’s military parade, which marks the 100th anniversary of America’s entry into W..., P1399 is a Honda specific diagnostic trouble code. It means that more than one of your Accord's cylinders is misfiring (maybe just one, more on that below), and is most common fix is to adjust the valve lash or replace the bad ignition component. P1399 Quick Facts Most commonly caused by valves that are out., However, more often than not, when codes like P0300 and P1399 show up it is a fuel delivery issue. You may want to check the fuel pressure next. If you do not have the tools to check this, and don’t want to invest in a fuel pressure gauge and fittings, have a shop test it for you. May 5, 2015 at 4:25 pm #663121. Brook., However, more often than not, when codes like P0300 and P1399 show up it is a fuel delivery issue. You may want to check the fuel pressure next. If you do not have the tools to check this, and don’t want to invest in a fuel pressure gauge and fittings, have a shop test it for you. May 5, 2015 at 4:25 pm #663121. Brook., Trouble code p1399. What should I do? - Answered by a verified Mechanic for Honda. ... I have a 2000 Honda Accord. Trouble codes P0303 and P1399 were pulled after the malfunction light came on on the dash yesterday. I am told they represent cylinder 3 misfire and ignition issue., 2004 honda pilot ex, 238,000 miles. P1399 code, replaced coils, plugs, PCV valce, EGR, and cleaned EGR ports; code still remains. Vehicle under load at ~4000-4500 rpm tcheck engine light flashes and code p1399. Mechanic's …, causes of misfire all cylinders honda vtec 2000 v6 - no plug wires or distributer - coil over. new plugs, new egr valve new coils. obd2 codes - p1399-p0301-p0302-p0303-p0304-p0305-p0306 … read more, 1998 Honda Civic EX: Codes P0301, P1399 Rough Idle & Now Problems with Accelorating. I've had a rough idle intermittently for some time, recently had the check engine light come on, checked codes which read P0301, P1399. These codes have come up twice now (after clearing once). We checked the spark plugs and all are still in good condition (NGK ..., Good morning, Quartz readers! Good morning, Quartz readers! France celebrates Bastille Day. This year’s military parade, which marks the 100th anniversary of America’s entry into W..., 195000. master tech : ok the first place I would be looking at is the data list on a advanced engine scanner. Customer: scanned code P1399 what that mean. master tech : this will show the map and fuel trims. master tech : p1399 is for random misfires., You will get the P0301-P0304 codes on your OBDC reader when you plug it in (if actually errors), but will only find the P1399 if you select Honda as the manufacturer. Just got these errors today on my CRV 2000.