Question about 2003 Mazda Mazda6

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Code says misfire in cylinder 3. How do I know which is cylinder 3 and once I identify it how do I fix it?

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You will need to find the firing order of the engine you have to determine where Cylinder 3 is located.
Please read this link for more informationhttp://www.obd-codes.com/p0203

Posted on Jun 03, 2010

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Mercury sable 2003 misfire


1) Google the code with the car model; read the troubleshooting tips
2) replace the spark plug on 3 cylinder if worn out;
3) need to check the el wire condition which supplies el to cylinder 3 - might need to replace the whole wiring el . Package...
4) erase the code once the parts are replaced.

it will be better to replace all spark plugs at once

Be safe when working on el .parts

Feb 14, 2015 | 2003 Mercury Sable

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How to fix engine light code 300, 301, and 302?


Hello Janet, those codes are 300=misfire cylinder #1 , 301= misfire cylinder #2, 302 =misfire #3 cylinder, it sounds like a bad coil pack but I don't know what motor you have or I could give more info. sorry
Woody. hope this helped you.

Sep 30, 2014 | 2000 Toyota Avalon

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How do i fix code PO300 on my 2000 Nissan Altima


That's a multiple / random misfire. Lot's of ways to go on this.. bad plug, wire, coil pack, etc. Then there's this one:
fixed my PO300 code MY350Z COM Forums

May 23, 2014 | 2000 Nissan Altima

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Check engine light flashes


Do you have problem with misfire.Could be coils.

Apr 12, 2013 | 1999 Ford F150 Regular Cab

1 Answer

Po303 misfire


this code identifies that the computer in your vehicle has picked up that cylinder 3 is not fireing properly so i would say change the plug in cylinder 3 if not cured change the plug lead if thes dosent work then distributer cap or the electronic distributer check all these things in this order its just elimination really

Sep 02, 2012 | Ford Taurus Cars & Trucks

1 Answer

Engine Code 301


Code # 301??? That is NOT a valid Diagnostic Test Code (DTC) for the engine control system on a 2000 Mercury Sable.

Assuming that you mean P0301, that is a cylinder misfire code that is identifying number 3 cylinder as the cylinder with the misfire problem. MANY things can cause a cylinder to misfire including spark plugs, spark plug wires or boots, burnt valves, broken valve springs, blow head gaskets, cracked cylinder heads, bad or dirty injectors, faulty injector control circuits, Failed ignition coils...the list goes on....proper diagnosis required.

May 30, 2012 | 2000 Mercury Sable

1 Answer

Car keeps giving p0303 code.


Code P0303 means that there is a misfire detected on cylinder #3. This could becaused by anything from a worn out spark plug to a blown cylinder head gasket, a faulty fuel injector, a bad ignition coil, or a leaking intake manifold gasket. I have also seen this type of code caused by clogged-up EGR ports in the intake manifold on certain engines. "Freeze Frame Data" stored in your Engine computer along with the fault code is designed to help identify what engine conditions (high speed/slow speed, heavy load/light load, etc.) are producing the misfire. This helps a lot in identifying exactly what is causing the cylinder to misfire.

One way to eliminate some of the possible causes is to swap parts with another cylinder to see if the code changes.

If you have "Coil-On-Plug" ignition, you can swap the coil on #3 cylinder with the coil on #4 Cylinder and swap the #3 spark plug with the #2 spark plug. Then clear the codes and drive the car till the Check Engine (or Service Engine Soon) light comes back on.

If it still gives you P0303, then it is not being caused by the plug or the coil. It could be any of the other possible causes listed above.
If it now gives you P304, replace the bad ignition coil that is now on #4 cylinder.
If it now gives you P302, Then replacement of all the spark plugs is recommended.

Dec 26, 2010 | Chrysler PT Cruiser Cars & Trucks

1 Answer

2003 mercedes Benz C240 codes P0300, P0301, P0302 and P0303. Please, help me how to fix?.


P0300 Random Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
according to this fault codes first mark ignition coils
3 ---------------- 6
2 ---------------- 5
1 ---------------- 4
RB-------------LB
this right banks and left bank, please remove Ignition coils with lids and spark plugs from right bank and swap with left bank, if fault code change as
P 0304 Cylinder 4 Misfire Detected
P 0305 Cylinder 5 Misfire Detected
P 0306 Cylinder 6 Misfire Detected
You can Identify it's a faulty ignition system then next swap ignition lids from ignition coils be careful each coils have two lids one short and other long bit deference and when you remove and fix it to the car keep in mind correct order because each coil two different fire for two spark plugs don't mix up, if you mix it can create the fault code.if you detect any fault ignition coils or spark plugs or lids replace that and also whether god or bad recommend to replace spark plugs, find the right that's most important thing, if this way couldn't found the any ignition fault next step is check fuel presser, when the engine running fuel presser must be around 4.5 bar without engine running must be 4 to 6 bar if the fuel presser too low need to check two different things one is fuel pump other is fuel injectors, in this case you can swap injectors from right bank to left bank and find is the injectors leaking, if not leaking faulty fuel pump.is this information helped you? if yes please leave a comment,

Oct 15, 2010 | 2007 Mercedes-Benz C230 Sedan

1 Answer

1999 Nisian Maxima and need to know what codes mean?


P1320 Ignition Signal
Signal wire from distributor
P0325 Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
O2 senor ( The one before the cat converter )
P0300 Random/Multiple Cylinder Misfire Detected
The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. The computer can also normally identify the specific cylinder in which the misfire has occurred. A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. There are other possible, less obvious causes as well, such as uncommanded Exhaust Gas Recirculatin (EGR), flow. 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

Apr 13, 2009 | 1999 Nissan Maxima

1 Answer

Looking for cylinder diagram/location on 2001 Ford Escape 6 cyl


here's the scoop. There is a TSB that addresses this issue.
First, replace the spark plugs.
Next, replace all 6 COPS, coil on plug. You have to because they feed back into the PCM, Powertrain Control Module and blow the drivers. Then you need to replace the PCM.

This was for 2004-06, but it might apply to yours if it's a 3.0L.
buy at tascafordparts.com.

Misfire DTC codes identify which cylinder is misfiring.

Misfire Detection Monitor The Misfire Detection Monitor is an on-board strategy designed to monitor engine misfire and identify the specific cylinder in which the misfire has occurred. Misfire is defined as lack of combustion in a cylinder due to absence of spark, poor fuel metering, poor compression, or any other cause. The Misfire Detection Monitor will be enabled only when certain base engine conditions are first satisfied. Input from the ECT or CHT, MAF and CKP sensors is required to enable the monitor. The Misfire Detection Monitor is also performed during on demand self-test.
  1. The PCM synchronized ignition spark is based on information received from the CKP sensor. The CKP signal generated is also the main input used in determining cylinder misfire.
  1. The input signal generated by the CKP sensor is derived by sensing the passage of teeth from the crankshaft position wheel mounted on the end of the crankshaft.
  1. The input signal to the PCM is then used to calculate the time between CKP edges and also crankshaft rotational velocity and acceleration. By comparing the accelerations of each cylinder event, the power loss of each cylinder is determined. When the power loss of a particular cylinder is sufficiently less than a calibrated value and other criteria is met, then the suspect cylinder is determined to have misfired.
  1. Misfire type A:

    Upon detection of a Misfire type A (200 revolutions) which would cause catalyst damage, the MIL will blink once per second during the actual misfire, and a DTC will be stored.

    Misfire type B:

    Upon detection of a Misfire type B (1000 revolutions) which will exceed the emissions threshold or cause a vehicle to fail an inspection and maintenance tailpipe emissions test, the MIL will illuminate and a DTC will be stored.

    The DTC associated with multiple cylinder misfire for a Type A or Type B misfire is DTC P0300.

    The DTCs associated with an individual cylinder misfire for a Type A or Type B misfire are DTCs P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0309 and P0310.

Dec 18, 2008 | 2001 Ford Escape

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