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Howdy, I have a 1999 991 cabriolet and all of a sudden the other night it started running rough and then the check engine light came on. The next day the light went off and the car is running fine. I just got an OBDII reader and P1314 code came up. Code reads engine misfire cylinder 2, emission relevant. Should I panic here. I have put about 100 miles since then and the car is running fine. Please advise.

Thanks,

bigpeps52

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P1314 Misfire, Cylinder 2, Emission Relevant

Possible causes:

- fouled, faulty or incorrect spark plugs

- contact resistance

- loose contacts

If the CEL is flashing you should not drive the car.

Check for a bad coil pack, bad spark plug connections, loose spark plug, or bad spark plug.

You can swap parts (one at a time) to another cyclinder and see if the fault follow the part.

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Howdy, I have a 1999 991 cabriolet and all of a sudden the other night it started running rough and then the check engine light came on. The next day the light went off and the car is running fine. I just got an OBDII reader and P1314 code came up. Code reads engine misfire cylinder 2, emission relevant. Should I panic here. I have put about 100 miles since then and the car is running fine. Please advise.

Thanks,

bigpeps52

Wow! I was just going to post the same question (kind of). I have a MY03 996 Cab and yesterday after I filled up at the gas station the Check Engine light came on. I called for a service appointment but before I got home the light went off and it has not come on since. I am going to run it by the dealer to check the code but I know from other cars (not Porsche's) I have owned, something as simple as the gas cap not on tight enough can trigger a fault. Was it a coincidence that the mileage just turned over to exactly 49,800?

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Howdy, I have a 1999 991 cabriolet and all of a sudden the other night it started running rough and then the check engine light came on. The next day the light went off and the car is running fine. I just got an OBDII reader and P1314 code came up. Code reads engine misfire cylinder 2, emission relevant. Should I panic here. I have put about 100 miles since then and the car is running fine. Please advise.

Thanks,

bigpeps52

Wow! I was just going to post the same question (kind of). I have a MY03 996 Cab and yesterday after I filled up at the gas station the Check Engine light came on. I called for a service appointment but before I got home the light went off and it has not come on since. I am going to run it by the dealer to check the code but I know from other cars (not Porsche's) I have owned, something as simple as the gas cap not on tight enough can trigger a fault. Was it a coincidence that the mileage just turned over to exactly 49,800?

Yes, just a coincidence!

Edited by kbrandsma
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