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P0301

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P0301 OBD-II Trouble Code: Cylinder 1 Misfire Detected
Diagnostic Trouble Code (DTC): P0301 P0301 code definition Cylinder 1 misfire detected What the P0301 code means There are 4-6 cylinders in most vehicles. In order, each cylinder fires a spark...

Related questions

Question
Need error codes fixed
Hi. P0133 is a code for the oxygen sensor bank one sensor. P0410 is a code for the secondary air injection system malfunction and P0301 is a code for a misfire on cylinder 1. I would suggest having a certified...
Question
Check Engine codes P0310 and P0705.
The p0301 code could be caused by a bad spark plug or coil pack on the engine. I would have a technician perform a tuneup and test the coil pack to see if this clears up the misfire. As far...
Question
Transmission not working properly
Hi. P0133 is a code for the oxygen sensor bank one sensor. P0410 is a code for the secondary air injection system malfunction and a P0301 is a code for a misfire on cylinder 1. I would suggest having a...
Question
Don't understand CEL Codes.
The codes P0300 through P0306 are for misfires of random cylinders or different cylinders. The second code P1456 is for the evaporative fuel tank system having a leak somewhere in the system. Since you are getting random misfires, then I...
Question
Car runs rough below 40 MPH
The code P0171 means that the engine running lean, which typically stems from a few possible sources: a faulty mass air flow sensor, or clogged intake manifold gaskets or fuel filter. The codes P0301 and P0316 can mean that cylinder...
Question
Found out 1st cylinder in car has no compression....what are my options?
The first thing you have to do is confirm such a diagnosis by getting a second opinion. It is unusual for three cylinders to be perfectly normal and one to have "no" compression. Nevertheless, it is possible. A cylinder...
Question
Misfire on cylinder 1 causes spark too rich or lean fuel levels
Hello there, the P0301 Cylinder 1 misfire is a common code on your 2002 Chevrolet Trailblazer. When a misfire code is seen it is telling us that the cylinder is not firing as it is supposed too. This means the...
Question
P0301 code, steady misfire.
Hey there. In order to check the cylinder for spark you have to remove the coil and insert a spark tester into the coil after reconnecting it. Then you can check to see if it has spark. The injector will...
Question
What is the major problem in my car
Hello. When you have this many codes you either have an issue with the voltage system in the vehicle being low due to a bad connection, a battery that is failing, or a faulty alternator. It can also be...
Question
Check Engine light on due to misfire
Code P0301 indicates a misfiring issue. You likely need an ignition coil. There is a possibility that oil is leaking into your valve cover, which is causing this. If you haven't replaced the spark plugs, you will need to soon....
Question
Car stalling when stopped
The codes all reference engine misfires. Continued misfires can cause the catalyst to fail and block the exhaust. The past diagnosis you had that the coils could be bad was correct. The coils and plugs should be replaced first and...
Question
Car idles and multiple trouble codes are triggered
Hi there. If this vehicle is having an idle concern, I have to ask if you may be having a stumble or stall issue when coming to a stop. If so, your vehicle may be covered under a special...
Question
Fuel injection issue - 2005 Buick LaCrosse
Hi there. Your vehicle has a sequential fuel injection system. When the computer detects a fault, it converts to port fuel injection (bank to bank/limp mode). The most likely cause could be an electrical short in the odd bank of...
Question
How can I find out what exactly is happening in my misfire?
Hello there. Misfires are a common problem with your 1997 Subaru Impreza as the vehicles ages. The most common failures are the spark plugs, coil, plug wires, fuel injectors, fuel pump, vacuum leaks, or an oxygen sensor. You have done...
Question
Engine Light/ Maintenance Required/ TCS Light on
All these codes point to engine misfires. You should pull the spark plug wires to see if oil is on the spark plug wires causing the misfire. You would need to replace the valve cover gaskets and spark plug tube...
Question
Misfire code 302 cylinder 2
Hey there. Your logic is absolutely correct. This is in fact one of the most commonly used ways to diagnose a bad ignition coil. If the trouble code turns to a P0301, the ignition coil is faulty. If the trouble...
Question
Po 301
P0301 is a misfire in number one cylinder. I believe you are already aware of this. A common problem on these is the injector assembly. I would do everything below before I condemn it. If I were there in person,...
Question
Need to know what to do with these codes generated
All the generated codes will need further inspection from a mechanic. The P0300, P0301, and P0305 are all misfires in the engine and could also cause some of the additional codes. You will need to have a diagnostics done and...
Question
rough idle, heavy missing, fault codes P0301 and P0456. lack of power, where do i start to diagnose this?
Hi there. From the description you have provided, for the P0301 rough idle and heavy misfire and P0456 evaporative small leak detected, the problems are unrelated. The P0301 is a #1 cylinder misfire code. It could be, a spark plug...
Question
Misfire codes and no-start. What could it be?
Fault codes for P0300, P0301, P0302, etc. indicate misfires. P0301 would indicate cylinder #1 misfiring, P0302 would indicate cylinder #2 misfiring,etc. Code P2159 has to do with the VTEC system malfunction. If all this started after the timing belt replacement,...

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