OBD 2 code showing 300 & 301 cylinder misfire

If you're still experiencing a cylinder 2 misfire in your 2013 Dodge Avenger 3.6L V6 after replacing the coils, spark plugs, and wires, there are a few potential causes to consider: 1. Fuel Injector Issue: A malfunctioning or clogged fuel injector can cause a misfire in a specific cylinder. Check the fuel injector for cylinder 2 and ensure it is functioning properly. It may require cleaning or replacement. 2. Compression Problem: Low compression in cylinder 2 can lead to a misfire. Perform a compression test to check the compression levels in all cylinders. If cylinder 2 shows significantly lower compression, it may indicate issues with the valves, piston rings, or cylinder head gasket. 3. Ignition Timing: Incorrect ignition timing can cause misfires. Ensure the ignition timing is set correctly according to the manufacturer's specifications. 4. Vacuum Leak: A vacuum leak near cylinder 2 can disrupt the air-fuel mixture and lead to a misfire. Inspect the vacuum lines and intake manifold for any leaks or loose connections. 5.Engine Control Module (ECM) Issue: A faulty ECM can incorrectly trigger a misfire code. Consider having the ECM scanned for any error codes or anomalies related to cylinder 2.

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P0128 OBD II Trouble Code Coolant Thermostat Coolant Temperature Below...
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P0206 OBD II Trouble Code Injector Circuit Malfunction Cylinder 6...
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P0306 OBD II Trouble Code Cylinder 6 Misfire Detected

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Diagnosing Mercedes Benz Misfire DTCs Auto Service World
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How to Fix error code P0300 for random misfires on your car ...

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Oct 15, 2010 - How to Fix error code P0300 for random misfires on your car ... amisfire (code P0304) on a 1999 Mercury Villager 3.3L · How to Fix error code P0500 ... I reset my codes and it ran fine for a couple of days, then I started getting ...

(code P0305) on a 1999 Mercury Villager 3.3L - auto repair

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Sep 7, 2010 - The vehicle is a '99 Mercury Village, 3.3L, with 150000 miles on it. The chief ... How to Fix error code P0300 for random misfires on your car ...

2000 Villager Misfire - Car Forums and Automotive Chat ...

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May 24, 2010 - 2000 Villager Misfire Villager Car Forums. ... i was told that the 3.3L engines of 1999-2002 nissan quests/ mercury villagers are INTERFERENCE engines! ... Hope the following may help, and I will post if my last fix works. ... I have a 1999mercury villager that is showing a random multiple cylinder misfire ...

Rough Idle - 2000 Mercury Villager - RepairPal

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Repair the code issue, because your Villager has OBD-II which is a very helpful Diagnostic system. Upvote (4) ... My 1999 Villager was running poorly; rough idle, lack of power at highway speeds and the engine problem light indicated random miss-fire, etc. I had new spark ... Have code po306 cylinder 6 misfire detected.

P0301 - OBD-II Trouble Code - RepairPal

P0300 multiple misfire
P0302 misfire cylinder 2
P0306 misfire cylinder 6

P0302 is a misfire in cylinder #2. When was the last time you changed spark plugs? That's the most common cause of a misfire.

P1354VVT System Malfunction (Bank 2)

• P0300 Random/Multiple Cylinder Misfire Detected
• P0301 Cylinder 1 Misfire Detected
• P0302 Cylinder 2 Misfire Detected
• P0303 Cylinder 3 Misfire Detected
• P0304 Cylinder 4 Misfire Detected
• P0305 Cylinder 5 Misfire Detected
• P0306 Cylinder 6 Misfire Detected
• P0307 Cylinder 7 Misfire Detected
• P0308 Cylinder 8 Misfire Detected

Probably bad plug wires. Start there and then disconnect the battery for 5 minutes reconnect and start engine to see which codes have cleared.

OBD II 300 Random/Multiple Cylinder Misfire Detected

When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we have either multiple cylinders misfiring, or the computer simply can't determine the specific cylinder, and as such we are left with the P0300 in computer memory.

Possible Causes:

Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues

P0300, P0301, and P0302 are all misfire codes (cylinders #1 and #2, and a multiple/random misfire). The only time I've heard of this being related to a crank sensor is if the sensor were loose. Furthermore, a crank sensor issue should affect all cylinders equally. So I'd expect you'd have the P0300 only, or all the codes you have plus P0303 and P0304 (and P0305 and P0306 if a V6).

You should continue checking your secondary ignition system. Presuming the wires and plugs made no difference in the codes or condition, check the coil. You'll want to do your checking when the problem is occurring. Perhaps even mist the wires and coil with water to see if you can see a spark jumping. If you do indeed see a spark jumping, that is the location of your problem.

Another strategy you can use is to take the #1 and #2 plug wires (if accessible) off the plugs and just set them back in place without clipping back onto the plugs. Then, start the car, and gradually pull the wire(s) off the plug(s). The spark should come out of the end of the wire onto the plug. If it comes out of the coil or the side of the wire, then the problem is in the location of the spark.

If you're unable to find a secondary ignition problem, then you should begin investigating whether you have a fuel delivery or internal engine problem causing the misfire. Most engine issues will show up with a compression test. If you indeed are only misfiring on cylinders 1 and 2, you can swap those injectors with the others to see if the misfire follows the injectors.