Pulled ECU code : P0302 | Now what?
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Causes
A code P0302 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer
.
A code P0302 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer
.
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#8
Originally Posted by AthenG
Do you get it all the time (Cold Start or while driving)? I get them only on Cold Start but I'm FI'ed.
#9
OK - this happens for a few reasons, other than code description:
First - you could have started the car badly - you know, let go of the key too soon and it didn't start, didn't have enough gas in the car, etc.
It is usually the above items - but also will be a fouled plug or possibly a coil.
Did the CEL go away, or stay, and were there multiple instances of the code, or just one? Where you driving spirited or just cruising when it happened?
Rick
First - you could have started the car badly - you know, let go of the key too soon and it didn't start, didn't have enough gas in the car, etc.
It is usually the above items - but also will be a fouled plug or possibly a coil.
Did the CEL go away, or stay, and were there multiple instances of the code, or just one? Where you driving spirited or just cruising when it happened?
Rick
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#12
I get this one quite a bit. Usually the CEL will flash while the car is checking it out. If the misfire continues, the CEL will come on solid. A few minutes later, the CEL will blink as the ECU checks again. This continues while there is a malfunction. In my case, it is a result of the wiring harness for the EManage Ultimate. I have a connector that is making intermittent contact. When this happens, I wiggle the harness and it goes away. I have tried re-soldering the connector (cylinder 2 signal wire), but it is still happening from time to time. I will keep re-wiring stuff until it stops for good.
#13
i also have the same problem on my '04 coupe, p0302 misfire on cylinder 2. plugs have been replaced not to long ago and still my check engine light comes on, so i switched the coils for #2 to #4 and it still reads a code p0302. I wanted to know is this problem is covered under manufactured warrenty.
#15
Originally Posted by Graphite
i also have the same problem on my '04 coupe, p0302 misfire on cylinder 2. plugs have been replaced not to long ago and still my check engine light comes on, so i switched the coils for #2 to #4 and it still reads a code p0302. I wanted to know is this problem is covered under manufactured warrenty.