P0300 Code Jeep

Some examples of other DTCs affected by this harness change are: P0068, P0452, P0453, P0107, P0108 and P0300. We finally located my problem, first off, this scanner tool can take direct readings live from the jeep during a drive and take a snap shot when the jeep. The code I got was P0339, which turned out to be "Crankshaft Position (CKP) Sensor Circuit Intermittent". The codes did NOT move when he swapped plugs, coils, injectors, etc. JEEP LIBERTY CHEROKEE Dammit - thought Id nailed P0300 code but its come back My 2005 KJ was throwing p0300 P0301 and P0302 plus an insufficient ionisation code for cylinder 5. I got these codes right after I changed the spark plugs. Bank 2 Code is a P0430. Changed plugs, wires, crankshaft position sensor, pcv. Another cause could be a bad ignition control module. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. It has 90,000 miles on it. Jeep Cherokee. Fault Code P0300 - Multiple Cylinder Misfire A misfire code in a specific cylinder (P0301-Cylinder #1, P0302- Cylinder #2, etc. Autozone is one place that will give you the code number. engine codes. A P0300 Jeep diagnostic code indicates a random or multiple misfire. Jeep Wrangler JK Diagnostic Codes for 2007 to 2018. I pull over imediatally and shut the engine off to see what the problem is. Some one told me it could be something wrong with the cylinder head. the spark plus and wires and a new throttle position sensor were replaced and still the same thing! the check engine light went on again and the code came out to be that the throttle sensor had low voltage and the 1st and 2nd spark plugs were misfiring. Jeep Cherokee. The efficient burning of fuel is essential to engine operation as the combustion of fuel is what provides the energy to power the engine in your Jeep. 00 one from Mac tools that not only gives you codes and definitions but some basic engine data such as coolant temp, tps volts, O2 sensor volts. Having no idea what that was, I turned to the internet for more information and could not find anything for a 2006 Wrangler with an automatic transmission. Leave a comment below or tell us if the information above help you fix the code. More of a vent, as it will go to the dealer. '06, 125k miles, 4. DIAGNOSTIC TROUBLE CODE DESCRIPTIONS; P-code suffixes (M) Check Engine Lamp (MIL) will illuminate during engine operation if this Diagnostic Trouble Code was recorded. Yes it would flash when driving, I would reset iit and it would only come back while driving, never while sitting and idleing. It took 5 drive cycles for the light to go off after I tightened a loose fuel cap on a '01 Wrangler. Best Answer: Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. I am a Mechanic/ Equipment Manager,/Drag Racer/Classic Car Restorer/Jeep Owner. Fiat-Chrysler is adding an estimated 62,148 vehicles to an earlier recall of 2014-'15. Engine misfire / fix !, P0300 random cylinder misfire. Thanks in advance. P0300 is a code generated by the Powertrain Control Module or Engine Control Module basically telling you that it has detected a random cylinder misfire. Source: Stu Olsen's Jeep Page, Austrian Jeep Club-Wrangler Codes (M) - Malfunction Indicator Lamp (Check Engine Light); (G) - Generator Light See Glossary for terms and acronyms. P0300 Code It has 72k miles on it we have religiously gotten her car serviced by the dealer. JustAnswer - 15 May 12 p300: have replaced plugs , #2 injector , swapped wires and coil packs. Well all was Well then it was like I just let off the Gas, so I did and then the Power kicked back in and all seemed well for a half minute or so and again same thing. Dedicated to helping the home and independent technician understand and use OBD-II technology. Coming down from Tahoe I took a pitstop in Elk Grove. OBD-II - On-Board Diagnostic System Information. My indie shop traced it to a bad #2 coil that wasn't firing the #2 spark plug. A P0300 diagnostic code indicates a random or multiple misfire. 0L cylinder misfire codes and possible remedies at. Another cause could be a bad ignition control module. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created function(1. OBDII Codes for Jeep Vehicles 1997 to 2006. How to Clear Trouble Codes. Random/Multiple Cylinder Misfire Detected. I replaced the ignition coil pack, plugs, did a full PCM reset and codes went away. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 1. I personally think it is a waste of money for them to do what we could do but she thinks they actually go over the whole car every time she takes it in for the oil change. Cleared codes. If no leak are found the next step is to replace the spark plugs. 2012 Jeep Grand Cherokee Engine Consumer Complaints Details. 7 Dodge or Jeep vehicle that is accompanied with an engine noise on the top end and backfiring through the intake or exhaust could have a fallen rocker arm. Best Answer: Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. Yes it would flash when driving, I would reset iit and it would only come back while driving, never while sitting and idleing. A P0300 diagnostic code indicates a random or multiple misfire. 2010 Patriot. Any suggestions on what i should do. 0l jeep : cylinder #1 misfire trouble code - jeep® yj, Hi moses, i have a small update on my Jeep Wrangler Oxygen. I do not smell any. Started as P0300's and will not run over 3000 rpm in idle. I few years back I got that code then as time went by, I'd get specific cylinder misfire codes. I have never had starting issues, so I Chrysler. P0300 Random misfires normally caused by vacuum leaks and bas fuel. Code Lookup | Actron Diagnostics & Mobile Scan Tools. p0300 is a code generated by the powertrain 4. 0 liter v6 engine Vin 1 and codes P0300 and P0304 stored. Check Engine Light Code P0300 Random/Multiple Cylinder Misfire Detected. Autozone is one place that will give you the code number. 5 I am still References,. If the P0300 trouble code returns, the compression system should be inspected. It stumbled last night driving home and then the CEL came on, the only code is P0300 currently. WHen it is pinpointed, it has been zeroing in on Cylinder 2 misfire with the P0302 Misfire and the p0300 goes away. Now I have a P0300 code. This video tutorial will show you how to adjust drum brakes on a Jeep Wrangler YJ. Some parts stores will scan your codes for free. Some Vehicle Specific Codes. ) pulled the codes with my reader and it's got P0300 listed as 'pending'. If the problem persist more tests needs to be done to diagnose problem, see "Possible Causes". Fiat-Chrysler is adding an estimated 62,148 vehicles to an earlier recall of 2014-'15. Some examples of other DTCs affected by this harness change are: P0068, P0452, P0453, P0107, P0108 and P0300. OBD-II Diagnostic Trouble Code (DTC) P0300 Definition, Category, Faulty System and Component. I noticed that my jeep would kinda feel like it was jerking through a gear, but real. P0300 Diagnostic Code - Random Misfire Symptoms. Just complete the following steps: Insert key into the ignition. The auto repair labor rates vary widely across the country, and even within the same city. Hey I was wondering if anyone has ever experienced the engine light coming on and throwing a Cylinder misfire code. The code I got was P0339, which turned out to be "Crankshaft Position (CKP) Sensor Circuit Intermittent". The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Auto powertrain maintenance and the fault troubleshooting of even basic problems can be incredibly complex. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. CEL isn't lit steady either. Jeep Wrangler JK Jeep JK Specs. OBD code P0300 means means the crank sensor is detecting random misfires. to check your jeep jk the p0300 code indicates a misfire, and the p0101 code is a mass airflow sensor code. A P0300 diagnostic code indicates a random or multiple misfire. 3 LTFT B1 2. My indie shop traced it to a bad #2 coil that wasn't firing the #2 spark plug. Bad or failing coil or coils depending on application If this code stands by itself it is likely one or multiple causes above. A flashing check engine light and a P0301 to P0312 diagnostic trouble code (DTC) is a surefire indication that one or more cylinders are misfiring. More than 18000 codes for all autos. Wrangler P0300 OBDII Code Symptoms. 0, manual Last week I changed the plugs and the cam sensor to address getting this code(as well as P0344 and P0335). I got a Jeep Cherokee brand new off the lot. The change involves a repositioning of the sensor and actuator wiring ground junction point to a location unaffected by engine movement and high temperatures (near turbocharger ) which may develop excessive resistance. The best (safest)way to erase trouble codes is to use a scan tool. I did what any well informed Trailblazer owner does and came to Trailvoy and started reading. Jeep Patriot P0300 OBD-II Diagnostic Powertrain (P) Trouble Code Information Page. I think it's probably coincidence. What the possible reasons for p0300 p0305 p0306 obd codes on a jeep? P0300 Diagnostic Code - Random Misfire P0306-0305 are for misfire in those numbered cylinders specifically. Eventually the CEL comes on, and logs a P0300 code. my car was stumbling on start up and misfiring bad to where the car kinda shook, First we Got a code of P0301 (#1 cylinder misfire) after running a minute it started showing random misfire P0300, so. Some Vehicle Specific Codes. Now I'm getting a P0300 code which is a multiple cylinder misfire, plus pre-cat driver side and post-cat passenger side oxygen sensors. Then any P codes will be displayed in you odometer. P0303 code Jeep Wrangler Dave k. I do not smell any. Below is the live reading at idle. This automotive repair article is on a specific check engine light code for a Jeep Grand Cherokee. 7 serious ignition problem i have a 3. Hey I was wondering if anyone has ever experienced the engine light coming on and throwing a Cylinder misfire code. Got P0300 and a few others ending in the cylinder #. A P0300 diagnostic code indicates a random or multiple misfire. notes The P0300 code means that a cylinder(s) is misfiring or is randomly. 5 Most Common Car Diagnostic Codes. P0301 and P0300 Codes. We finally located my problem, first off, this scanner tool can take direct readings live from the jeep during a drive and take a snap shot when the jeep. 5L Gasoline Turbocharged Direct Injection (GTDI) engine may exhibit various engine misfire symptoms accompanied by diagnostic trouble codes (DTCs) P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 stored in the powertrain control module. [Tech] 2009 Jeep Compass - P0300, P0315, P0335 Hi all. First of all, this site rocks! Now for the unpleasantness I just bought a one owner 2001 Jeep Grand Cherokee Limited with 77,000 miles for my fiancee, and in less than 20 miles the freakin' check engine light came on! I know vintage cars very well, but new stuff blows my tiny mind the check engine light came on at start up, and instantly the. The P0300 JEEP code means that a cylinder(s) is misfiring or is randomly misfiring. Hey I was wondering if anyone has ever experienced the engine light coming on and throwing a Cylinder misfire code. 8 liter engine. Right away, I'm talking not even 5 minutes the P0300 is showing up as pending with a Random Misfire. jk wrangler, 1. Changed plugs, the google links My guess the previous mechanic did this also thus P0300 Jeep Grand Cherokee 2005 coolant leaking on plug 3 and wanted $900 to get started. Jeep Wrangler JK Jeep JK Specs. Scan your codes and follow the chart to determine what the code means. We finally located my problem, first off, this scanner tool can take direct readings live from the jeep during a drive and take a snap shot when the jeep. And, if anything goes wrong with any one of these parts, your Jeep's computer will make a note of it and/or even let you know about it by illuminating a Malfunction Indicator Light (MIL for short or 'check engine' light) or icons on your dash. Some 2011-2013 F-150 vehicles built on or before 6/15/2013 and equipped with a 3. Random/Multiple Cylinder Misfire Detected. ) pulled the codes with my reader and it's got P0300 listed as 'pending'. Putting on the code scanner i'm getting P0300 (Multiple Cylinder Misfire) and P0303 (Misfire Cylinder #3). I was able to limp home about 6 miles and then hooked up the Code checker and P0306 so I took it to the Shop to have it scoped and a. Best Answer: Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. Honda Prelude Forum > Honda Prelude Discussion > Fifth Gen Prelude Discussion: Another DIY ATTS, ABS, & CEL (Check Engine Light) DTC. carlosleonardos,The P0306 code means that the cylinder 6 is misfiring or is randomly misfiring. Sometimes a misfire may feel like a vibration. The P0304 code means there is a misfire in cylinder #4 a. Jeep Fault Codes P0300 Jeep began running smoothly again. Pinpointing cylinder misfire codes. 0, manual Last week I changed the plugs and the cam sensor to address getting this code(as well as P0344 and P0335). please what mean code p1946 for jeep compass 2018. random misfire. Today on a cold start she runs OK for 2-3 minutes and then wham! it runs like crap. As it stands, 90% of the time it idles perfect with only occasional rough patches. what does lousher mean on my odometer reading on my jeep liberty - the jeep on Oxygen Sensor Codes For Help With This Jeep Check Engine Light Code At PCM P1390 Timing Belt Skipped One Tooth Or More P1391 Intermittent Loss of or Mechanical Fault P1495 Leak Detection Pump Solenoid Circuit Open Or. so i got the codes checked they were p0300 and then there was a cylinder 4 and. JustAnswer - 15 May 12 p300: have replaced plugs , #2 injector , swapped wires and coil packs. Scanning reveals the above codes, but there is no misfire. [Tech] 2009 Jeep Compass - P0300, P0315, P0335 Hi all. It can be anywhere from two or more cylinders misfiring causing this P0300 code to appear in the computer. Description of the standard trouble OBD codes by family. Random Misfire P0300 through P0306 - 2000 TJ Wrangler. Full list of OBD II Diagnostic Trouble Codes. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 1. Recently I did that and I am still getting the codes P0300, P0301, P0306. Use it here. P0300 jeep - cylinder misfire fault - engine-codes. Within 10,000 miles I started having issues. no possiable causes or why it is showing these codes. Well a few days later Scotty bought snap-ons new Ethos scanner tool. ODB2 Code: P0300 - Multiple Miss-fire I have an issue with my Jeep Liberty. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. More of a vent, as it will go to the dealer. P0300 Diagnostic Code - Random Misfire Symptoms. It had 39,500 miles on it when I purchased it on 4/30/2011. there are two lengthy and useful discussions on Jeep 4. Check engine light came on on my new to me 2002 tundra. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. Scan your codes and follow the chart to determine what the code means. Your email address will not be published. P0300 Code It has 72k miles on it we have religiously gotten her car serviced by the dealer. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. Jeep Wrangler JK Jeep JK Specs. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. 0 The cost of diagnosing the P0300 JEEP code is 1. Replaced all plugs and coil packs and a new battery and everything was hunky-dory for about 2 weeks. We recommend Torque Pro. P0300 JEEP Comments Help us improve AutoCodes. It has thrown up code P0300 and P0152. 2012 Jeep Grand Cherokee Engine Consumer Complaints Details. Hello all, new to forum. P0300 random misfire trouble code Fix a P0300 random misfire code on a GM or GMC vehicle. running out of crap to change So here's what I found and the jeep was spitting out p0301 and p0300 constantly and had a bit of a rough idle. They were just annoying. Actron Diagnostics offers a code look up tool for your automotive diagnostic and scan tool needs. no mods other than the predator Perf91 Tune. After that it ran like a top for a couple hundred miles but now P0300 is back. Like all vehicles manufactured after 1996, your Jeep Liberty has an on-board diagnostic system (OBD-II). P0300 Engine Trouble Code. Cylinder Misfire code 68 Answers. The 2004 Jeep Liberty has 6 problems reported for check engine light on. Down at the CPS the ground is good, just over 5v on the input, but im also getting 5v on the output. Was told to try this forum to help resolve my issue. There are quite a few things that can cause the P0303 trouble code to trigger the Jeep Wrangler. Changed all plugs, did compression test (all around 180),replaced intake upper seals, reseated the PCM wire harness's, and changed out the 2 cps sensor due to previous codes and reset as they are only replaceable when the intake is off. A P0302 code, for example, would tell you cylinder number two is misfiring. HELP!! I recently purchased a 2008 Jeep Liberty from a Chevy dealership, it has spent more time back at the dealership than in my driveway. This stored Diagnostic Trouble Code (DTC P0420) is not definitive enough to just replace the parts based upon its' indication. I do not smell any. A P0300 code indicates the misfire is random and moving around from cylinder to cylinder. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. 2001 Mazda Tribute with a 3. How to Clear Trouble Codes. More of a vent, as it will go to the dealer. OBD-II Diagnostic Trouble Codes (DTC) This list contains standard diagnostic trouble codes (DTC's) that are used by some manufacturers to identify vehicle problems. anyway got home, plugged in the predator and got the trouble code " P0300 - Random Misfire Detected". Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel. A fault in the compressor is rare but possible for this code; If the P0300 trouble code still persists, then the powertrain control module is defective. Average repair cost is $710 at 130,200 miles. P0300 - Multiple Cylinder Misfire Jeep®, Wrangler, Rubicon, Renegade, CJ, Quadra-Trac and the. Cylinder Misfire code 68 Answers. A random misfire means your engine is misfiring, but that the problem is not isolated to one or two cylinders. Scanning reveals the above codes, but there is no misfire. Some Vehicle Specific Codes. On Saturday (this all happened on a Friday) I went to my local auto parts store and borrowed a code reader and pulled 4 codes P0300, P0301,P0303,P0305. Leave a Reply Cancel reply. G day - My son has a 96 XJ with 5 speed. Hey I was wondering if anyone has ever experienced the engine light coming on and throwing a Cylinder misfire code. 0L cylinder misfire codes and possible remedies at. If there are multiple descriptions of the diagnostic code listed above, please read below to see if any of the descriptions are known to be for a specific model or year of Jeep vehicle. I replaced my spark plugs with E3 plugs and also the Ignition wires, next is the coil pack and the two oxygen sensors. If you are looking for a cheap code reader I bought a 99. [Tech] 2009 Jeep Compass - P0300, P0315, P0335 Hi all. P0132 OBD-II Trouble Code. P0300 Random misfires normally caused by vacuum leaks and bas fuel. Some Vehicle Specific Codes. JEEP WRANGLER Code p0300 multiple cylnder misfire My 97 TJ is throwing a code P0300 which shows as a multiple cylnder misfire. Lelouch's trademarks are his ebony hair, and violet eyes, which he inherited from his mother, and father respectively. Getting a P0300 code. Started as P0300's and will not run over 3000 rpm in idle. If no leak are found the next step is to replace the spark plugs. Then you should replace or reprogram the PCM. 4 motor,122000 miles. Glad to see that Y'all are keeping the Home Fire Burning. Engine misfire / fix !, P0300 random cylinder misfire. One idiot light isn't very descriptive, so Jeep also privided a method to query the computer for all codes that have been set. Best Answer: First off, I am assuming the Check Engine light is on. To correct the condition, follow the Service Procedure steps to replace the long block engine assembly. Read the full article below to know what it means, how to fix it, and what other codes may show related to it. Fuel sys 1 CL Calc Load 4. If the problem persist more tests needs to be done to diagnose problem, see “Possible Causes”. From the posts listed, I found the problem codes: P0300, P0301, P0302, P0455, and P1196. Then I was on my way home from work, the shifter lit up like a Christmas tree and. CAKNOW App. Vehicle starts and runs good but has a very slight misfire experienced after warm and when under a slight load (slight acceleration, A/C kicks on, etc. Or bad o2 sensor. I found the TSB, and it looks easy enough, but I didn't do it because I'm at school, so I just disconnected the battery and reconnected it to get rid of the CEL. It will say the code is being showen when engin is on a decend/roll with no throdel action. The P0300 JEEP code means that a cylinder(s) is misfiring or is randomly misfiring. 7 L, is having misfire, codes p0300 and p0304. Why is jeep allowed to continue to make these if they are such issues. 0 hour of labor. It had OEM plugs and a full going over back at 30k miles (just under 36k currently). Wrangler Codes | Cherokee Codes. It seemed to do OK at part-throttle, so I limped it home. Occasional misfires may pass unnoticed, but a steady misfire is hard to miss. As luck would have it, the JK Wrangler's come with a Diagnostic Trouble Code (DTC) reader built right into the dash and you can access them by following the 3 simple steps below. 24k miles, way too early for a plug change. P0300 OBD2 specifically refers to the camshaft (cam) timing. Codes P0300- Misfire P0302- Cylinder 2 Misfire P0446- Evaporation. Vehicle starts and runs good but has a very slight misfire experienced after warm and when under a slight load (slight acceleration, A/C kicks on, etc. Check engine light will flash at that time and set a code P0300. Cylinder Misfire code 68 Answers. no possiable causes or why it is showing these codes. And have a scan done at the auto store, copy and post ALL codes along with info asked for. If you can get the code or codes you have post them and I will let you know what they are. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 1. This list of faults, also called DTC (for Data Trouble Code) has been defined so that any diagnostic device can read and decode them. All of these issues can cause a P0300 code in the computer. Meaning of P0300 engine trouble code is a kind of powertrain trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. Jeep Fault Codes P0300 Jeep began running smoothly again. I have never had starting issues, so I Chrysler. , which will designate the exact cylinder that is misfiring. P0132 OBD-II Trouble Code. Best Answer: Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. Was told to try this forum to help resolve my issue. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. The Random miss firing just recently started, we started by putting the fuel injector cleaner in it. Changed plugs, wires, crankshaft position sensor, pcv. Wrangler Codes | Cherokee Codes. It had OEM plugs and a full going over back at 30k miles (just under 36k currently). Seafoam should not have caused that code imo. 2008 Jeep Grand Cherokee Limited, 4. One idiot light isn't very descriptive, so Jeep also privided a method to query the computer for all codes that have been set. The code has to do with the engine not reaching operating temperature within a certain length of time after the vehicle has been started. Hi All, I am new to this site. Every time I drive 60 or above on the highway, the check engine light blinks and it comes up with the code P0300. This list of faults, also called DTC (for Data Trouble Code) has been defined so that any diagnostic device can read and decode them. Jeep Wrangler P0303 Definition P0303 is a cylinder specific misfire code, which means that Cylinder 3 is misfiring and causing the code. Thanks to the advent of technology, just about every single part on your new Jeep JK Wrangler is wired up to a computer. Symptom: Check Engine Light Illuminated and engine misfire, may also detect loss of power or hesitation while accelerating. A P0300 code indicates the misfire is random and moving around from cylinder to cylinder. Well all was Well then it was like I just let off the Gas, so I did and then the Power kicked back in and all seemed well for a half minute or so and again same thing. Once you've had the Jeep repaired or serviced, you or your mechanic can reset the codes, shutting off the instrument panel warning light. i've been to 3 mechanics and they cant fix the - Answered by a verified Jeep Mechanic. My Jeep check engine light started to blink, and the engine is running really rough. while investigating I found that the O2 sensor relays on the distribution box are missing,. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 1. A test drive until it quits with a good scan tool plugged in may tell you if cam or crank position sensor signal was lost or is present or has lost sync (out of time). We recommend Torque Pro. I checked all sensors I could see under the hood but still no go (I have a K&N air filter). Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. Anyway, I cleared the codes again, started it up and it ran ok for a minute then as the idle came down and temps came up you could hear slight missing. The car runs and drives normal but the only issue is when it sits overnight the first start up usually takes like 5-6 seco. Trouble Codes › P0300. The Jeep Liberty engine is known for having valve train issues. anyway got home, plugged in the predator and got the trouble code " P0300 - Random Misfire Detected". 2004 Jeep Liberty P0300. Jeep coded again yesterday with the same codes as original problem. Hi All, I am new to this site. Below is a video I made on a Oldsmobile 3. I got these codes right after I changed the spark plugs. But it ran perfectly after that. there are multiple things. P0300 engine code provides below are generic codes that may not apply to all vehicles. Honda Prelude Forum > Honda Prelude Discussion > Fifth Gen Prelude Discussion: Another DIY ATTS, ABS, & CEL (Check Engine Light) DTC. Runs great, but occasionally throws a CEL. During the drive home it shot me a P0300 code again(the choice words I invented cant be repeated on a famialy board). 2012 Jeep Grand Cherokee Engine Consumer Complaints Details. If your engine is misfiring it means that one or. P0300 Jeep Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis. A fault in the compressor is rare but possible for this code; If the P0300 trouble code still persists, then the powertrain control module is defective. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. Every third cold startup or so, I get a misfire code on Cylinder #3 (P0303), and twice or three times gotten a "Multiple Cyl Misfire" (P0300). Today on a cold start she runs OK for 2-3 minutes and then wham! it runs like crap. 3 My check engine light came on and I have these codes. P0132 OBD-II Trouble Code. P0304 Jeep Description When a misfire occurs, engine speed will fluctuate. Hi All, I am new to this site. '06, 125k miles, 4. Codes Obd Ii Trouble. engine codes. 7 ECT 199 STFT B1 -2. Code: P0300 may also be accompanied by a 301-312. Since 9/12, I have driven Jeep for hours without a probem, until yesterday after about 1 and 1/2 hour of driving. anyway got home, plugged in the predator and got the trouble code " P0300 - Random Misfire Detected". You haven't changed out the P0302 Jeep Grand Cherokee. Average failure mileage is 61,300 miles. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. Leave a comment below or tell us if the information above help you fix the code. Last week, the SES light began flashing and the engine started running rough on my '05 with 202K miles. I can start the truck fine, but it idles real shaky and tries to stall until i get about 15 miles on it when the pcm learns the tune. re: p0300 engine misfire code The coilpack can develop hairline cracks that will only become a problem as it gets warmer.