Since them I have: -swapped ignition coils again with #2/#4, -made sure #2/#4 spark plugs are tightened all of the way, -tested #2/#4 to see if they are getting sparks with a spark plug test light. Jun 3, 2009 · All Activity; Home ; Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ; 1999 Outback P0304 code help! Feb 7, 2020 · bike_reck. I drive an 02 WRX mfd 01/02, bone stock with 140k miles on her. Look at the electrodes and see if they are May 10, 2016 · The p2443 code I have had in the past and the Air pump, and two valves had been replaced at roughly 80k. So I started getting a P0304 code this past Sunday (4/24). '04 OBW 2. This time I cleared the code and it came back. There are two approaches -. Make sure all are connected. 25 (MT) BRZ/GR86 2. 2 Plug-in HYBRID 19MY- 0. P0354 is a generic OBD2 code that indicates that ignition coil “D” has an issue with the primary or secondary wiring circuits. 0L Turbo) 6: 10-09-2005 02:57 PM Mar 24, 2022 · P0304 can be caused by anything from old spark plugs to vacuum leaks to poor engine compression. Hey everyone, I am looking for any help possible with my 2008 Subaru Outback 2. Mar 2, 2020 · Typically, if your Impreza registered P2096 there will be noticeable symptoms. #1 · Feb 19, 2014. 030". 5L Turbo 18-21MY 0. Poor grounds/grounding. Here are the most common P0304 Subaru WRX causes; they are presented somewhat in order from most to least likely to be causing the code in your car: Bad Spark Plugs– A fouled spark plug is the most common cause of P0304. 4L DIT 22MY - 0. Finally, yesterday the car threw a P0304, misfire in cylinder 4. Subaru Impreza P0500 Symptoms. Misfire codes: Was P0302, now P0301, P0303 after some work. NO – Replace the front exhaust pipe and the center exhaust pipe. Then drive the vehicle. Replaced all spark plugs, erased codes. its only pulling this code and everything else seems fine. Jan 8, 2013 · Panic! -drove around a little staying out of boost. I am not getting any other codes. or. Here are the most common P0303 Subaru Legacy causes; they are presented somewhat in order from most to least likely to be causing the code in your car: Bad Spark Plugs– A fouled spark plug is the most common cause of P0303. P0302 Cylinder 2 misfire detected. - A/F learning 1A gets very close to 15%. Code. -tested ecu connection for those harnesses with Mar 14, 2012 · Vehicle: 1991 Nissan. Car seemingly ran fine, no unusual noises or engine power deficiency. P0303 = Misfire Cylinder #3 Detected. Instead of replacing parts willy-nilly until the issue is fixed, visit a trusted, certified mechanic to properly diagnose the Apr 27, 2020 · 2004 STI p0011 p0021 and p0304 Factory 2. 2nd Time. Clear the trouble code and clear the fuel trims. 4L 22MY- 0. 1 - Find the problem and then fix it, also known as diagnosis. Two, three, or four misses, and it straightens out, and runs fine the rest of the trip. Gold. Today at the shop we had to say goodbye to a beloved vehicle. 028"-. If the P2096 Subaru code returns, check the wiring harness and check for a vacuum and exhaust leak. P0304 is a drivability concern and should be dealt with right awa y. If your Subaru Legacy has the P0304 trouble code, you should know that it’s about as common of a code as there is. Look at the electrodes and see if they are in Dec 2, 2018 · P0304 OBD II Code Causes: Subaru Forester A fouled iridium plug vs. I changed the spark plugs and wires a few days ago, erased the code Dec 20, 2017 · want to do any diagnostics and are willing to gamble $150 or $200 (depending on whether you install Denso or genuine Subaru), install a new A/F ratio sensor. 2-vacuum leak (look for any hoses or possible problems on the intake runner to the cyl. 2004 Turbo WRX, axle back exhaust. Clogged/dirty/bad injectors or fuel filter. May 26, 2009 · I pulled the code at Schuck's and it showed a P0304 code (cylinder 4 misfire). 59000 miles. 5i P0303 and P0304 Codes Mar 6, 2014 · To set things clear, my car is a 2004 Impreza RS, ~196,000 KM (not miles), only mods done are UEL Headers and a Tsudo Catback. This 1996 Subaru Legacy wagon has helped pay our bills for many years but alas all good things May 11, 2024 · P0304 Subaru: Code Meaning, Causes, Symptoms, & Tech Notes 2003 Forester 2. Ice: Clarion VRX755VD motorized LCD screen/dvd player with Aug 20, 2020 · Tech Notes. Look at the electrodes and see if they May 26, 2015 · Accelerate. In the case of a P0304, there’s a compromised combustion process on the no. 2011 outback 2. P0302 Subaru Code - Cylinder 2 Misfire Detected Mar 10, 2012 · Location: Fort Worth, TX. So far, here is the list of things done to the car: 1. Check the spark plugs (especially the gap), wires, and ignition coil. Clean the battery ground cable and ones that run to the intake manifold. I’ve done tons of web research Apr 2, 2021 · En este video les muestro que ocaciona el codigo P0028 y P0026 en un 2005-2011 Subaru Impreza. Initially car was running fine then lost power half way through the drive (no smoke yet) towards the end of my drive my car stalled at a light (its manual), then the misfiring started. P0420 is a cat efficiency code caused by the misfires, too much unburnt fuel going through the exhaust. Engine misfire occurs when the engine combustion process is compromised in a given, multiple, or random cylinder. I have about 73k miles on my car, and had not yet changed the spark plugs so that was my first guess. Jan 12, 2017 · 2007 Impreza WRX. 0L Turbo) 53: 06-14-2006 12:40 PM: P0303-P0304 Cylinder 3 & 4 misfire detected =(Hunt3r: Factory 2. 1-bad spark plug, coil, or coil boot (carbon tracking around outside of spark plug, you can see this on the out side of the plug, replace the plug and coil boot if any tacking at all) also check that you have power to the coil, and that the ECU is grounding it. When the magnetic field in the coil collapses and sends the energy to the spark plug there is a small amount of energy feed back. I have codes p0301, p0304, and p0607. (good) -tested #2/#4 fuel injector for connection/ that they were clear. 140,000 miles - P0301,p0303,p0304,p2443 - cylinder 1,3,4 misfire and seconadary air injection system switching valve stuck closed, bank 2. Here are the most common P0304 Subaru Forester causes; they are presented somewhat in order from most to least likely to be causing the code in your car: Bad Spark Plugs– A fouled spark plug is the most common cause of P0304. 5l. Oct 28, 2010 · So here are the possible issues (read this first,then post about an issue if you have no resolution after trying said solutions): MISFIRES . Before you can even diagnose P0304 in your car, you need to find the fourth cylinder’s location. ever overheat ? Sep 27, 2005 · trouble codes P0171, P0303, P0304 Engine Management & Tuning trouble codes P0171, P0303, P0304 - NASIOC Welcome to the North American Subaru Impreza Owners Club Oct 17, 2023 · Hello, 2010 2. the "xx" tells you which cylinder misfired. Share. obviously it needs to be fixed for inspection as it triggers the check engine light, abs, traction, brake light blinking etc. For a couple years its thrown random P0302 or P0304 misfire codes, always right before the engine reaches running temp. So I took it to my mechanic buddy who replaced the trans (trustworthy guy), and his scanner pulled P0304, P0302, P0301, and P0420 codes so all of the cylinders are misfiring except #3, and of course the catalytic code, which could be a result of the cylinders misfiring, or Aug 15, 2021 · 6 posts · Joined 2012. 5L 18MY- CROSSTREK 0. P0302 in the Subaru Impreza is a common OBD II trouble code. No CEL at the time, but about 10 mins later, boop, CEL turns on. If the engine speed fluctuates enough to cause the Crankshaft Position sensor signal to vary, the Engine Control Module can determine that a misfire is occurring. The previous owner stated he had no problems with the car. Sometimes, I’ll just get one code; other times I’ll get two to three cylinder codes. Jul 21, 2023 · Welcome to the North American Subaru Impreza Owners Club: Sunday June 16, 2024: Home: Forums: 2006 Subaru Impreza STI P0304 Intercooler Throttle Body Repair DIY Apr 12, 2019 · The P0026 and P0028 codes relate to the oil pressure in an oil line that controls the camshaft variable lift mechanism. Sep 14, 2015 · i've seen brand new wires cause cylinder misfires on that engineactually in a 1997 Impreza OBS before to be exact. If your Subaru WRX has thrown this code, it may be accompanied by P0304 . You can check the OCV resistance. -replaced timing belt and pulleys/tensioner, new thermostat, new plugs NGKIridium BKR6EIX gapped Jan 6, 2015 · Engine Problem - P0304. Looks like the ECU is dumping fuel to keep things running. And occasionally the P0420 keeps coming back. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. It always starts and n … read more Oct 11, 2016 · Join Date: Sep 2016. P0301 is a fairly common trouble code with the Subaru Impreza. 5 wagon Subaru's codes. Apr 1, 2023 · P0301 P0302 P0303, P0304. A check engine light came on along with the emergency, brake light traction control, cruise light, blinking. To my problem, I was out driving last night, pulled to a stop light, as I accelerated, I noticed my car stutter/jerk during mild-heavy accelerations. 5 ohm at a 65-70F range. Look at the electrodes and see if they Nov 19, 2018 · Conclusion. Replacing the spark plugs is the most common fix for P0301 in the Subaru Impreza. Hold a steady speed of 88km/hr (55mph) for 3 minutes. 5. It’s impossible to give an accurate estimate without properly diagnosing the issue first. After it added up a few episodes, it threw a CEL code, P0304, Misfire #4 cylinder. I immediately drove home and parked it Jul 18, 2021 · I know that individually the P0301,P0303 & P0305 are cylinder misfire codes. These are sensor grounds and must be kept clean. or a o2 sensor. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed. 5X 5MT & 2008 Impreza WRX 5MT & 2009 Impreza 2. bad would be head gaskets. New battery. - Answered by a verified Subaru Mechanic Jul 26, 2014 · Newer Generations of Subaru discussion 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX 2000 Subaru Legacy Outback showing codes P1325, P0483, P0304 Jul 15, 2011 · I got codes P0301, P0302, P303, P0304 and P0325. I just started chasing a P0302 with the bouncing motor on my '02 with 8x,xxx miles with a stock motor and Cobb AP Stage 1 map. Mar 22, 2012 · Installed the MSD coil on my 99 Subaru Legacy GT. Knocking – A loud knock is common with Mar 6, 2024 · Code Number Code Description Related Codes; P0304: Cylinder 4 Misfire Detected: P0300 - Random/Multiple Cylinder Misfire P0301 - Cylinder 1 Misfire Detected P0302 - Cylinder 2 Misfire Detected Apr 29, 2016 · Help: P0304-Cylinder 4 Misfire Detected. P0301 Cylinder 1 misfire detected. Sep 19, 2022 · 130K+ miles on my 2012 Subaru Legacy 2. Common Problems That Trigger This Code. This is the first time that I have had the codes read. P0010. 35 2. Just wanted to share a bit of info re: diagnosis and repair of 3 misfire codes P0301 P0303 P0304. Dec 2, 2018 · 4’th Cylinder. When I was driving my check engine light,traction control and cruise control lights clicked on. I thought it was strange that 3 cylinders would start misfiring at the same time. The source of this trigger is originated in the crankshaft position sensor. Feb 10, 2006 · White/Grey. - Cyl #2 "roughness" indicates quite often at any idle speed below about 800rpm. The car runs fairly well driving around. RCE wgn sprngs/Konis/H6. This vi Nov 29, 2018 · P0303 OBD II Code Causes: Subaru Impreza A fouled iridium plug vs. Dec 21, 2016 · Newer Generations of Subaru discussion 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX P0304 Cylinder 4 Misfire did tune up, Injector next? 2003 Outback 2. P0301 = Misfire Cylinder #1 Detected. Mods: 8cm FP Red, Stage 5 Built Shortblock, Hydra EMS, Hydramist, Dynotune Nitrous Kit, ACT 6-puck Xtreme Clutch, All sorts of supporting mods, etc. There was an exhaust leak and the 'slightest' misfire upon Mar 12, 2017 · All Activity; Home ; Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ; 2008 Outback 2. 25 WRX 2. Vehicle: 2002 WRX Wagon,Com-C. Sure enough, replacing the PCV valve (P/N Oct 16, 2006 · Vancouver Impreza Club Forum -- VIC: 15: 07-20-2007 03:50 PM: P0301 P0302 P0303 P0304 Cylinder Misfire Help: choie: Factory 2. Over the past few months, the Subie has had a slight mis-fire upon cold start-up. I bought the car with no CEL. Try changing the fuel filter. I got the car diagnosed at a AutoZone and their machine read possible cylinder 3 misfire, Leaking or bad injector, Ignition system malfunction affecting a cylinder, Engine mechanical Jul 18, 2014 · Intermittent Misfires p0301-p0304 at warm idle. One day it would barely start, was missing like crazy particularly at idle, and throwing misfire codes Jun 5, 2024 · I have a 2010 subaru impreza 2. 15 (CVT) 0. I swapped all the spark plugs (they had 50k Miles on them anyway) that did nothing. Hold Steady Speed. I replaced the fuel pump, wires, plugs, coil pack, but still have the same problem. 21 ASCENT 19 - 21MY 0. Just recently about 2 weeks ago, the check engine light and the cruise control light turns on. This code has appeared before but usually goes away on its own of stays off after being cleared manually. P0302 = Misfire Cylinder #2 Detected. Fixing it should be considered a priority. Dec 2, 2018 · April 21, 2023 by Jason. My is a stock 2009 wrx. -drove to PA staying out of boost (CEL still flashing intermittently) -upon arrival had p0304, p0302, p0301. Give it gas to go above that (or faster idle at startup) and it's smooth. If that is not the issue, you will need to check the other usual causes. P0400 Exhaust Gas Recirculation Flow Malfunction. P0304 Cylinder 4 misfire detected. You are probably now wondering, “How do I fix trouble code P0304?” First things first, if your car is not experiencing any of the usual symptoms, you should check the sensors for faults and replace them if necessary. 2 - Throw parts at the problem until the problem disappears, often known as the dealership approach. So I've had my 2006 WRX limited for about a month now. 100k service done 4 years ago that included spark plugs Recently the dash lit up like a Christmas tree. There are other causes, but the swap test can help narrow them down considerably. Jan 13, 2020 · The injector firing is based on the bank 1 cam sensor, so if the actuator is not working proper or the oil control solenoid is stuck on bank 2, the timing is off from bank 1 and you get imbalance and misfires. Check for Other Codes. 5 Limited. Mar 5, 2014 · California Cold Start in the AM was accompanied by solid CEL showing a P0303 and P0304 Cylinder Misfires. NGK, OEM, or high quality wires should be used. I found something pretty interesting when troubleshooting a misfire on my car and had to effect a clever fix to get by on. This code may be the culprit if you're experiencing misfires or rough idle in your Outback. P0304 = Misfire Cylinder #4 Detected. But, these are the most common symptoms of P0500 in general. Pull and clean the sensor as well as the electrical connector. Feb 19, 2014 · 136 posts · Joined 2009. May 23, 2012 · Check the turbo inlet pipe where it connects to the turbo. Jun 5, 2024 · I have a 2010 subaru impreza 2. Jun 10, 2024 · I got a p0304 and p0300. This pipe is famous for ripping and causing a huge preturbo leak (P0171 as well). 5 May 11, 2024 · P0304 and P1518 2011 Subaru Impreza 2. P0325 Knock Sensor Circuit Malfunction. Soldered all the connections. I have already replaced both plugs and wires. This is how I diagnosed the problem in less than 10 minutes. P0303 and P0304 are misfires on cylinder 3 and 4 (the rear cylinders). P0304 is most commonly triggered by issues stemming from spark plugs, coil packs, ignition wires, distributor cap and rotor issues, and sometimes vacuum leaks. P0354 is a relatively straightforward diagnosis and is typically caused by a bad coil pack or wiring harness issue P0302 is the cylinder #2 misfire code. ) When the engine is idling, or at low rpm, the pressure, which is controlled by a duty solenoid valve, should be low, and the pressure switch remains in it's mechanical default (closed) position. If no leak are found the next step is to replace the spark plugs. I noticed throughout the week that it would come in sooner and sooner each time. I replaced plugs and wires, fuel filter, I have swapped my coil pack and igniter with test units from a tech that works at the dealership and I still have the same issue. Yet ANOTHER P0304 Cylinder 4 misfire thread. The p2443 code cleared for 50k and then started re-appearing. Camshaft variable timing solenoid failure, Engine oil level is too low, The engine is not timed correctly, The engine oil does not meet the manufacturer's Jun 22, 2009 · Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX why isn't the ECU indicating P0303 and P0304 Apr 29, 2016 · So I started getting a P0304 code this past Sunday (4/24). I don't notice any shuttering or anything going wrong, it just trips the CEL light. i'd return your aftermarket coil and install the original coil - the Subaru units are robust and an old one is probably still more reliable than a new aftermarket. Wrong, worn or incorrectly gapped spark plugs. It may also misfire and have a hard time accelerating. Mar 1, 2021 · Video on fixing the P0304 error code on a Subaru Outback. It’s a generic OBD IIcode (same meaning for all vehicles) that indicates that your car’s fourth cylinder is misfiring. Sep 23, 2006 · All Activity; Home ; Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ; P0302/P0304 Misfire Codes Jun 14, 2020 · The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. 3. It helps control transmission shifts, ABS, cruise control, the speedometer, and more. The cruise light flashes when this happens. . 7. Hey guys, just wanted to get your opinions on what might possibly be the culprit for my P0304 cylinder 4 misfire on my 2002 wrx wagon before I set it on fire and push it into a ditch. Apr 21, 2011 · All Activity; Home ; Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ; P0302 & p0304 Dec 10, 2018 · The Impreza uses this signal for many vehicle functions. 188 posts · Joined 2014. Nov 11, 2020 · #SubaruBeen fighting this issue for some time, but finally fixed it. P0 301 through 304 showed four misfire codes plus a P050A code which is “cold start idle control system performance”. Jul 8, 2020 · There is a Factory Service Bulletin for the following Subaru models: 2012–2013 Subaru Impreza 2012–2013 Subaru XV Crosstrek 2013 Subaru Legacy 2013 Subaru Outback 2011–2013 Subaru Forester Subaru Factory Service Bulletin OBDII Code P0024 Jun 14, 2020 · Code P0302 Subaru Description. But, I keep encountering intermittent misfire CELs when idling. 0L Turbo Powertrain (EJ Series Factory 2. New ignition coils and spark plugs. If you take your car to a shop for diagnosis, most shops will start with an hour of “diag time” (the time spent in labor diagnosing your specific issue). Reactions: cwarter and bman400 Mar 6, 2008 · Causes of misfire codes are as follows. Here are some of the most common ones: Rough Running Engine – With your Impreza’s engine running a little too lean, you may notice that it struggles to idle properly. Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be Jul 25, 2021 · The breakdown for P0303 & P0304 is as follows: P03xx is a MISFIRE code. , the OBD gives me 4 codes (p0302 & p0304) … read more Jan 23, 2012 · 98 Forester 2. If it has some flavor of spark leak, you might be able to find it by using water in a spray bottle and spritzing along the spark plug wires/near the coil. Proceed to Jul 28, 2012 · p0301,p0303,p0304 at wits end tried everything!! Factory 2. -reset ECU (CEL returned) -Changed fuel filter (no change) -dry gas and full tank of 93. 15 YES – The diagnosis is complete. Usually it is just one cylinder though, and it seems to happen rarely as when I had the code checked it is a freeze code. The car computer, also known as Apr 22, 2022 · Welcome to the North American Subaru Impreza Owners Club: Friday June 7, 2024: Home: Forums: 2006 Subaru Impreza STI P0304 Intercooler Throttle Body Repair DIY in Mar 9, 2006 · I was having misfires in cylinders 3 and 4 and all the accessport would say was "12" and "31" where it should have had p0303 and p0304. It's an OBD2 code and indicates that your car’s first cylinder is misfiring. 5L Turbo) 2004 STI p0011 p0021 and p0304 - NASIOC Welcome to the North American Subaru Impreza Owners Club IMPREZA/CROSSTREK 2. Nov 14, 2011 · Welcome to the North American Subaru Impreza Owners Club: Monday June 17, 2024: Home: Forums: Images: WikiNASIOC: Products: Store: Not I have P0301, P0303, P0304 Jun 5, 2009 · All Activity; Home ; Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ; P0304: Issue solved! Nov 4, 2022 · OTOH it could also be a problem reported by the ECU by a bad sensor, or a wiring issue or even the ECU itself. Initially car was running fine then lost power half way through the drive (no smoke yet) towa … read more Dec 2, 2018 · P0304 OBD II Code Causes: Subaru WRX A fouled iridium plug vs. Oct 18, 2009 · 2003 Subaru Baja rough idle, codes P0301, P0302, P0302, P0304. It indicates that your car’s second cylinder has a misfire. Mar 9, 2009 · Stumped on P0302, P0304. Strangest thing -- the engine seems to misfire only when it's wet and humid outside. CEL, flashing cruise control light - P0304. 5i with about 180k. P0304 is a cylinder-specific misfire code, meaning only your Outback’s fourth cylinder has a misfire. that Nov 29, 2018 · P0303 OBD II Code Causes: Subaru Legacy A fouled iridium plug vs. #2 · Feb 7, 2020. As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If the problem persists more tests needs to be done to diagnose problem, see "Possible Causes". Cylinder 3 and 4 Misfire. Googled it and found one obscure video indicating a PCV Valve replacement. Search OBD-II Trouble Codes. 2. 5i, I am having some engine problems. 5i 5MT. It recently developed a misfire for cylinder one. P0304 Subaru Code - Cylinder 4 Misfire Detected Nov 28, 2018 · Replacing the spark plug or coil packs is the most common fix for P0302 in the Subaru Impreza. 551602. from a Subaru Outback Wiki to customer May 21, 2020 · May 21, 2020 by Jason. When a misfire occurs, engine speed will fluctuate. I swapped the 2 and 4 coils and I still have a misfire on cylinder 4. Greetings all. The car seems to be running fine. Apr 18, 2006 · Mine is a P0304 misfire. On “V” configuration engines, it’ll usually be the second cylinder on the head further away from the front of the engine. A year or more ago I got the P0302 and swapped #2 & #4 coil packs. 0L 17MY CROSSTREK 0. Misfire in cylinder 4 (P0304 + PFFFE) Hi I keep getting a misfire on cylinder 4 and it seems to happen at idle. If the coil, wire, and plug are working right the energy feedback will be in a measurable value. Este canal es básicamente basado en reparaciones de autos ya se A P0304 diagnostic trouble code means the powertrain control module has detected a misfire on cylinder four. a new one. Powertrain Control Module (PCM) failure, Variable valve timing actuator failure, Wiring issue. 5L Turbo) Welcome to the North American Subaru Impreza Owners Jun 11, 2013 · P0303 p0304 I have a 2009 Subaru Legacy with est 70K on it. 3 2. Check engine light = Solid Brake = Blinking Nov 30, 2018 · The most common fix for P0420 in the Subaru Impreza is a new catalytic converter, followed by an O2 sensor replacement. (See attached. 5L Turbo Powertrain (EJ Series Factory 2. Before taking your Impreza into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need. P0325 = Knock Sensor 1 Circuit Malfunction. But what would cause all three in one bank of cylinders to register a misfire at the same time? Thanks in advance. Cant get rid of the c0057 code. World Rally Blue. Had the torque converter replaced for reference. Engine starts high (a little over 1,000 RPM) and then slowly idles lower until it starts shaking (around 650 RPM). #1 · Aug 15, 2021. 1. May 29, 2021 · The answer is the ECU detects a misfire from the coil pack. Generally NGK work best gapped between . This is a 2010 Subaru Impreza with 150k miles. 5L 17MY- IMPREZA 2. 98S, 2014 Impreza 5 dr Ltd (9 Subaru's since 1978, 7 were 5 sp) ILuvSubaru's. 5XT manual transmission with 84,000 miles. 4 cylinder. Here’s a good P0420 diagnostic order for the Subaru Impreza: 1. maybe a fuel rail issue though. I've changed the air filter, - Answered by a verified Subaru Mechanic my 2002 Subaru outback will start and idle strong for 10 seconds then die. 6. But last week **** hit the fan. Pins 3 & 4, the two opposite the lock tab, should be at about 7. 0L 2. Everything ran fine, except when hitting 70MPH or so in 5th gear, it will flick the CEL light on. Driving home from work and less than a 1/2 mile from home, I get a blinking CEL showing a P0304 Cylinder 4 Misfire. Onc Jun 9, 2015 · I'm getting codes: P0304, P0303, P0302, P0301, PFFT, and PFFFE. This also seems to happen more with my cobb Jun 14, 2020 · Code P0304 Subaru Description. P0011. The engine starts quickly and immediately when cold. It happens when the ECM decides the signal from the sensor indicates that the cylinder is misfiring. P0303 and P0304 are both misfires, for cylinders 3 and 4 respectively. The main thing those two have in common is a shared ignition coil, so that seems the most likely. Nov 30, 2016 · But it's declined, and runs really crappy and rough all the time now. Symptoms will vary depending on the model year and other conditions. Mar 20, 2017 · Sometimes a P0304. Apr 26, 2024 · DTC P0304 represents “Cylinder 4 Misfire Detected”. 5, 108k miles. Got the CEL code read, and its coming up as p0303 and p0304, cylinders 3 and 4 misfires. I reset my ECU and the car ran fine until the next day (about 70 miles later) when the code popped up again. My car is a stock 96 Legacy which has the same primary set-up that an Impreza does. I have had my outback for about a year now and have had struggles with cylinders misfiring for the entirety of that time. I also get P0136 Rear oxygen sensor circuit malfunction, but I have been getting this for months now without any problems. Code P0304 shows as cylinder 4 misfire. Here are the most common P0303 Subaru Impreza causes; they are presented somewhat in order from most to least likely to be causing the code in your car: Bad Spark Plugs– A fouled spark plug is the most common cause of P0303. eq ys en bn bx ve zm rl pp ms