Ford p0306

2009 - 2014 Ford F150 - 2013 F150 Fx4 Ecoboost P0306 engine code - I have a recently purchased 2013 f150 Ecoboost. I am having a issue with a P0306 engine code. At wide open throttle when the truck reaches 5k or more it will fall on its face and the check engine light will flash. Truck will run rough for a few moments...

Diagnose and fix your check engine light yourself See what your engine code means in plain English Get the most likely repair and cost Access our Mechanic Hotline Do ...January 31, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Ford F250. This code indicates that your truck’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring).1. Reaction score. 1. Location. Chesterfield, Va. Has anyone had the code P0306 indicating cylinder misfire in cylinder 6 and found a solution? i was going to start by changing the spark plugs but once I took the engine cover off I noticed oil sitting on top of the valve cover above cylinder 4 and can’t find a leak anywhere.. it would be ...Service Procedure. Connect the Ford Integrated Diagnostic System (IDS) or Ford J2534 Diagnostic Software (FJDS) to the data link connector (DLC). Check for DTCs. Is P0316 and/or P0011, P0012, P0016, P0018, P0021, P0022, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 stored in the PCM? Yes - proceed to Step 2.17 May 2019 ... 2004 Ford F250 5.4l Misfire P0306. Sorry the audio got screwed up. If you cannot understand something please comment.I have a ScanGaugeII that displays P0306 and P0000. I don't have an extra $8k, $5k, $1K or any other of those quotes for dealer repairs. I'm in the $50-100 range. Thank you. Modular V8 (4.6L, 5.4L) - P0306 help! - When this started the Navigator just died while my wife was driving at 25 mph and it wouldn't restart!Year, Model & Trim Level. 1975. December 8, 2021. #1. Got a 2012 Explorer with the 3.5L. It gives the 3 codes, P0300, P0302, P0306 which are all random misfire codes. These are CEL flashing codes under load and after a few times it stays on. I am only driving the car when testing. It does have a small erratic idle.97 f150 cyl 3 4 7 8 misfire. Help. 1997-2006 Expedition & Navigator - **Please help** P0306 CYLINDER 6 MISFIRE ISSUE - Hey guys, I have a 03 expo with a 5.4l engine, last night I started getting the misfire issue on cylinder 6, now my problem is that I just replace the serpentine belt last week and Im just a regular guy trying to save a buck on ...

2003 V6 misfires Help! P0300, P0305, P0304, P0316 +. I have a 2003 Escape with the 3.0 V6 with 156,000 miles on it. This has been one of the best most reliable vehicles that I have ever owned. About 4 months back on a rainy morning I fired it up to go to work and it was missing like crazy and trying to die. No engine lights or codes so I let it ...P0306 is certainly a cause for concern, and should be considered a threat to the drivability your Grand Marquis. The nice thing about P0306 is that it’s a cylinder specific trouble code, which makes diagnosing the problems much more simple than P0300, which means that the cylinders are randomly misfiring.. It will often be accompanied by codes …Jan 2, 2019 · Crown Victoria P0306 OBDII Code Symptoms. The P0306 trouble code will trigger the Crown Victoria’s service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer. The P0306 code indicates that your powertrain control module (PCM) has detected a misfire on cylinder number 6. The vehicles usually contain 4, 6, or 8 cylinders. These cylinders are arranged in different arrangements. To increase the engine power, you will need to increase the number of cylinders.The P0306 code is a generic powertrain code that is read by the vehicle’s onboard computer system. It indicates that there is a misfire in the engine’s cylinder 6. A misfire occurs when the fuel and air mixture in a cylinder fails to ignite properly, causing the engine to run rough and potentially damaging the vehicle’s catalytic converter.Check engine light code P0306 indicates that cylinder number 6 is experiencing misfires. Find out how to fix it in this article!2009 - 2014 Ford F150 - 5.0 Random P0300, P0301, P0306 - I have a 2011 F150 5.0 4x4 with 135K. The truck was driven ~800 miles from sea level to 5000+ ft, sat for a week, then ran again. Once I drove it again, about 30 minutes in it through a P0300, P0301, P0306 code. Truck ran fine, didn't feel rough at all. I drove...Ford Ranger P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine.

I keep a code reader in my car and read the codes. P0206 and P0306. Something is wrong with the 6th cylinder. Likely something wrong with fuel injector vs coil and spark plug. I clear the codes. Start the car. Still running poorly. After about 30 seconds the flashing CEL is on again.To diagnose the P0306 2000 Ford F150 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.Code P306 and P316 both indicate a misfire on cylinder number six. P300 is misfire on unknown cylinder. Car missed and started running very rough. I replace...Intermittent rough idle P0306 code. My problem started with a P0305 code. Had it checked by my mechanic and he said it was the wires that I had just installed. He replaced the wires, reset the code and the truck ran ok for a short time. Next codes PP0305 and P0306 came on. Back to the mechanic. He replaced the injector on cylinder 5 and the plug.

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If you’re in the market for a used Ford F150, it’s important to know what to look for when searching for one near you. The Ford F150 is one of the most popular pickup trucks on the...Reply Share. 1 / 1. New Member Introductions - Engine code P0306 - I have a 2017 F250, The check engine light came on and the code on my zurich reader has come up code P0306. Cylinder #6 misfire. The engine is not running rough or seems not to be missing. I cleared it, all was well until I remote started the engine with the fod.2002 Ford F-150 4.2L V6 2WD ~140,000 miles. Thanks from the . Reply Like #2 08-13-2010, 07:58 AM BrianA. Postmaster. Join Date: Aug 2001. Location: Trussville, Alabama. Posts: 4,532 Likes: 0 Received 2 Likes on 2 Posts Hi and welcome to FTE! Hope you find some help. ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0306 Saving Repair Parts...

2009 - 2014 Ford F150 - 2013 F150 Fx4 Ecoboost P0306 engine code - I have a recently purchased 2013 f150 Ecoboost. I am having a issue with a P0306 engine code. At wide open throttle when the truck reaches 5k or more it will fall on its face and the check engine light will flash.1997 - 2003 F150 - Intermittent P0300 & P0306 when cold - I had a problem that began last spring with my 97 F150 4.6. Sometimes, after cold morning starts, my truck would idle ok, but run poorly during acceleration with hesitation and a loss of power until warmed up. The codes were either P0306 or once in awhile...In a report released today, Ryan Brinkman from J.P. Morgan maintained a Buy rating on Ford Motor (F – Research Report). The company’... In a report released today, Ryan...Code P0306 occurs when the ECM (engine control module) detects a misfire on engine cylinder number 6. When cylinder number 6 misfires, it means that the air and fuel mixture in that cylinder has failed to ignite. As a result, the engine’s speed fluctuates, causing the crankshaft position sensor signal to vary. The ECM detects this and reports ...6.0L Power Stroke Diesel - P0300 and P0306 codes. - Hello All, We have discussed this truck many times but a few things have changed. Since my next-to-last post here's what's changed: 1. A reman 6.0 diesel engine has been installed, thus eliminating the terrible oil heating problems I had. This engine has about 50,000...If it varies beyond 2 percent, the Monitor will set a P0306 code and illuminate the Check Engine Light. If there is more than a 10 percent variance, the Check Engine Light will blink or pulse in a steady manner to indicate that a harmful Catalytic Converter misfire is occurring. When diagnosing a P0306 code, it is important to record the freeze ...Mar 30, 2015 · 2009 - 2014 Ford F150 - 5.0 Misfire P0306 - Hi All I have a 2012 Screw with the 5.0L, have 56000 miles. At around 50000 my check engine light started coming on showing a code of P0306 #6 cylinder misfire... Now my previous truck was a 2006 Scab 5.4 so I know about misfires. Jun 16, 2020 · When passing, or attempting to merge at highway speeds, flashing CEL with codes P0300, P0305, P0306. It isn't an issue under normal day to day driving, just annoying knowing its "there". Reply P0316 Symptoms: Ford Ranger. When P0316 appears as a stand alone code, there isn’t going to be much in the way of symptoms other than a rough and clunky start. The service engine soon light will come on. That’s usually about it. When P0316 appears with other codes such as P0300, P0301, etc, it can be a symptom of a much larger …Jan 2, 2024 · The PO306 code in Ford vehicles refers to a specific diagnostic trouble code (DTC) that indicates a misfire in cylinder 6 of the engine. When this code appears, it means that the powertrain control module (PCM) has detected a significant imbalance in the air/fuel mixture or ignition timing for that particular cylinder.

A P0306 trouble code is not just another alphanumeric jumble; it’s a signal from your car’s onboard diagnostics system that something isn’t quite right under the hood. Specifically, it indicates a misfire in cylinder 6. While it may sound like technical jargon, understanding this code is crucial for maintaining your vehicle’s ...

2009 - 2014 Ford F150 - 5.0 Misfire P0306 - Hi All I have a 2012 Screw with the 5.0L, have 56000 miles. At around 50000 my check engine light started coming on showing a code of P0306 #6 cylinder misfire... Now my previous truck was a 2006 Scab 5.4 so I know about misfires.Dec 7, 2018 · Transit Connect P0306 OBDII Code Symptoms. The P0306 trouble code will trigger the Transit Connect’s service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer. What is the Cost to Diagnose the Code P0306 2007 Ford Fusion? Labor: 1.0. The cost to diagnose the P0306 2007 Ford Fusion 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 ...A P0306 trouble code is not just another alphanumeric jumble; it’s a signal from your car’s onboard diagnostics system that something isn’t quite right under the …Year, Model & Trim Level. 1975. December 8, 2021. #1. Got a 2012 Explorer with the 3.5L. It gives the 3 codes, P0300, P0302, P0306 which are all random misfire codes. These are CEL flashing codes under load and after a few times it stays on. I am only driving the car when testing. It does have a small erratic idle.Check engine light blinks for a bit, then turns solid. Starts and idles fine, normal acceleration is fine, the only time it runs poorly is under heavy acceleration. Had codes pulled and it had a history of 3 P0302 codes (Cylinder 2 misfire). At first I was sure it was a tranny issue, sounded/felt like it was slipping. But seems to be the misfire.El código de diagnóstico de problemas (DTC) P0306 de Ford se refiere a un fallo de encendido en el cilindro 6 del motor. Un fallo de encendido se define como la falta de combustión en un cilindro debido a la ausencia de una chispa, una medición incorrecta de combustible, baja compresión u otra causa.The appropriate solution for Ford Code P0300 depends on the underlying cause of the misfire. Possible solutions may include replacing faulty spark plugs, ignition coils, or fuel injectors, repairing vacuum leaks, cleaning carbon buildup from intake valves, addressing issues with the fuel system, or even performing an engine rebuild if necessary.Dec 6, 2018 · Ford Taurus P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine.

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If it varies beyond 2 percent, the Monitor will set a P0306 code and illuminate the Check Engine Light. If there is more than a 10 percent variance, the Check Engine Light will blink or pulse in a steady manner to indicate that a harmful Catalytic Converter misfire is occurring. When diagnosing a P0306 code, it is important to record the freeze ... 1997 - 2003 Ford F150 - P0306 Misfire #6 tried several things... stumped!! - To start off, I might type alot..... and Im new to the forum.. Hi! This might not be the correct forum etiquette, but my first post is a CEL. I'm sure I'll be doing many searches and reading several hours worth of material for many weeks,...Ford Expedition P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the ...2019 XLT 3.5L NA - Flashing Check Engine P0300, P0305, P0306. I have taken my Explorer to Ford 3 separate times for the same issue. During the fall was the first time and these codes came up, Ford dealer was told to replace the spark plugs and coils on 5 & 6 cylinders.Depending on the engine type, the 2014 Ford F-150 truck has between 302 and 411 horsepower. According to the Ford website, the four engine types include the 3.7-liter four-valve V6...Code P0306 2003 Ford F150 Description. Misfire is defined as a lack of combustion in a cylinder due to the absence of a spark, incorrect fuel metering, low compression, or any other cause. 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 ...A P0306 trouble code is not just another alphanumeric jumble; it’s a signal from your car’s onboard diagnostics system that something isn’t quite right under the hood. Specifically, it indicates a misfire in cylinder 6. While it may sound like technical jargon, understanding this code is crucial for maintaining your vehicle’s ...1997 - 2003 Ford F150 - P0306 Misfire #6 tried several things... stumped!! - To start off, I might type alot..... and Im new to the forum.. Hi! This might not be the correct forum etiquette, but my first post is a CEL. I'm sure I'll be doing many searches and reading several hours worth of material for many weeks,...Car Code p0306 is a check engine light with a misfire code. We go through the causes, symptoms for trouble code P0306 and how … ….

My Ford Flex 3.5L V6 had a check engine light with a code of P0306: Cylinder Misfire Detected in Cylinder 6. In this episode I cover quick diagnostics and …2002 Ford F-150 4.2L V6 2WD ~140,000 miles. Thanks from the . Reply Like #2 08-13-2010, 07:58 AM BrianA. Postmaster. Join Date: Aug 2001. Location: Trussville, Alabama. Posts: 4,532 Likes: 0 Received 2 Likes on 2 Posts Hi and welcome to FTE! Hope you find some help. ...Code P0306 occurs when the ECM (engine control module) detects a misfire on engine cylinder number 6. When cylinder number 6 misfires, it means that the air and fuel mixture in that cylinder has failed to ignite. As a result, the engine’s speed fluctuates, causing the crankshaft position sensor signal to vary. The ECM detects this and reports ...17 May 2019 ... 2004 Ford F250 5.4l Misfire P0306. Sorry the audio got screwed up. If you cannot understand something please comment. El código de diagnóstico de problemas (DTC) P0306 de Ford se refiere a un fallo de encendido en el cilindro 6 del motor. Un fallo de encendido se define como la falta de combustión en un cilindro debido a la ausencia de una chispa, una medición incorrecta de combustible, baja compresión u otra causa. A P0306 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #6. Symptoms. Symptoms may include: the engine may be harder to start. the engine may stumble / stumble, and/or hesitate. other symptoms may also be present. Causes.10 Jun 2020 ... Latest Ford Parts: Ignition Coil (2011-2016)- https ... Ford F150 3.5 Ecoboost misfire P0301 P0302 P0303 P0304 P0305 P0306 troubleshooting tips.Ford Transit Connect P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at ...Service Procedure. Connect the Ford Integrated Diagnostic System (IDS) or Ford J2534 Diagnostic Software (FJDS) to the data link connector (DLC). Check for DTCs. Is P0316 and/or P0011, P0012, P0016, P0018, P0021, P0022, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 stored in the PCM? Yes - proceed to Step 2. Ford p0306, P0306 code is defined as cylinder 6 misfire detected. The majority of cars are powered by an engine with four or six cylinders. And many trucks will have an engine with six to eight cylinders. In engines with six or more, the P0306 code may appear. It will specifically apply to cylinder 6, thus the term cylinder 6 misfire. , The claim was that sometimes Ford COPs failed in such a way as to cause electrical noise. This would cause a DIFFERENT cylinder to misfire. It might have been something along the lines of it caused another cylinder to fire early enough to screw it up when it got its actual trigger. Just something to think about., Ford Ranger P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine., 2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316. Diagnose engine for engine misfire concern., Also P0106 code disappeared by fixing P0306 only. ... Serious Explorations is a Ford Explorer and Ranger Based vehicle community. Founded in 1996, our goal is to support our members with the information they need to keep their Explorers, running their best. The forum is free to use with ads, or you can become an Elite Explorer member …, Ford Taurus P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine., Ford Edge P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine., Reaction score. 24,101. My ’20 Lincoln 3.0TT reported in with p0300 / P0316 - Congratulations BTW, that’s an impressive number of DTC’s. Mine was fuel injectors - plural. In relevant part: ‘not all cylinders contributing to power balance’ -- this was interesting, the 3.0 MKZ will do low 5 seconds to 60 all day long and no that’s not ..., The P0306 code means that cylinder #6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #6. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems., Inspect your COP boots and wire if you change your plugs, use dielectric grease in the boots and anti-seize on the plug thread. Check these links for possible solutions... OBD-II Trouble Code: P0171 System Too Lean (Bank 1) , OBD-II Trouble Code: P0302 Cylinder 2 Two Misfire Detected. Reply Like. # 3., In a push to be more accommodating to small businesses, Ford is aiming to provide electric vehicles to the likes of plumbers and electricians. In a push to be more accommodating to..., 1 Sept 2014 ... 31:03. Go to channel · Ford's Fusion/Escape 3.0L Misfire Diag & Repair! What Killed The PCM? P0300-P0306. GoTech•217K views · 6:01. Go to ..., It can cause misfires. One of the possible causes of a P0171 is exhaust gas leaks... a compression test is relatively simple and inexpensive (Harbor Freight sells the kit for under 50 bucks). It's built for speed, it ain't built to last. R.S.LOGAN., Crown Victoria P0306 OBDII Code Symptoms. The P0306 trouble code will trigger the Crown Victoria’s service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer., The code P0316 on a Ford vehicle indicates a misfire detected on startup (first 1,000 revolutions) in the first cylinder. This subheading will explain the meaning of the code and dive into the potential causes behind it. Answer: The code P0316 is specifically related to a misfire condition that occurs during the first 1,000 engine revolutions ..., The fast-charging network for Ford owners will double with this deal Ford electric vehicle (EV) owners will soon be able to plug into Tesla’s vast EV fast charging network. Startin..., Jun 16, 2020 · When passing, or attempting to merge at highway speeds, flashing CEL with codes P0300, P0305, P0306. It isn't an issue under normal day to day driving, just annoying knowing its "there". Reply , Dec 7, 2018 · Ford Flex P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine. , 2015 - 2020 Ford F150 - 2017 F150 Misfire Problem - I have a 2017 F150 5.0L Roush Supercharger with 88K miles. Problem started with the Driver side cat giving me a P0430 code. After about a month I was able to replace the driver side cat and about a week later replaced the passinger side cat. ... P0306 (P0306 is a cylinder specific misfire …, Sep 11, 2018 · January 30, 2023 by Jason. P0300 is a generic OBDII code that can occur with the Ford Explorer. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). , Oct 13, 2012 · P0301 Cylinder 1 Misfire Detected. P0306 Cylinder 6 Misfire Detected. P0351 Ignition Coil A Primary/Secondary Circuit Malfunction. The Explorer uses a waste spark ignition system. Pairs are: 1&5, 6&2, and 4&3. Since cylinders 1 and 6 are misfiring then two coil sections are involved. , El código de diagnóstico de problemas (DTC) P0306 de Ford se refiere a un fallo de encendido en el cilindro 6 del motor. Un fallo de encendido se define como la falta de combustión en un cilindro debido a la ausencia de una chispa, una medición incorrecta de combustible, baja compresión u otra causa. , Ford Econoline P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the ..., P0306 definition: Cylinder 6 misfire detected. Issue Severity: SEVERE – Stop driving immediately. Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. Diagnosis: A multiple misfire can be caused by anything from faulty spark plugs to low engine ..., Ford Econoline P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand …, Check engine light code P0306 indicates that cylinder number 6 is experiencing misfires. Find out how to fix it in this article!, 97 f150 cyl 3 4 7 8 misfire. Help. 1997-2006 Expedition & Navigator - **Please help** P0306 CYLINDER 6 MISFIRE ISSUE - Hey guys, I have a 03 expo with a 5.4l engine, last night I started getting the misfire issue on cylinder 6, now my problem is that I just replace the serpentine belt last week and Im just a regular guy trying to save a buck on ..., 2015 - 2020 Ford F150 - 2017 F150 Misfire Problem - I have a 2017 F150 5.0L Roush Supercharger with 88K miles. Problem started with the Driver side cat giving me a P0430 code. After about a month I was able to replace the driver side cat and about a week later replaced the passinger side cat. ... P0306 (P0306 is a cylinder specific misfire …, 2003 Ford Escape P0300, P0304, P0306 P0161 [Solved] I'll like to share my success story in solving MY 2003 ford escape constant shakes and misfires. I had misfires in cylinder 4 and 6. I changed all 6 spark plugs, coil packs on cylinder 4, 5, and 6. car sounded better but didn't stop the shakes. i changed the flex pipe, still continue to shake., Feb 19, 2015 · Intermittent rough idle P0306 code. My problem started with a P0305 code. Had it checked by my mechanic and he said it was the wires that I had just installed. He replaced the wires, reset the code and the truck ran ok for a short time. Next codes PP0305 and P0306 came on. Back to the mechanic. He replaced the injector on cylinder 5 and the plug. , Transit Connect P0306 OBDII Code Symptoms. The P0306 trouble code will trigger the Transit Connect’s service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer., The FIXD wireless OBD2 scanner and free app for iPhone and Android translates your check engine light into plain English so you can rest easy. In this video,..., Ford F350 P0306 Definition. P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it. An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine.