I have an 05 STR that had been showing its check engine light for codes P0107 and P0108 which pertain to the Manifold Absolute Pressure sensor. Since it has been very cold and snowy here the car has been parked in a car port. About a week ago I started it to let it warm up and to move it around a bit. At that time i noticed that the check engine light did not come on. I actually drove it to work today and again the CEL did not come on. I used my code reader and no active codes are indicated. It seems unlikely that this problem has fixed itself but I thought I'd ask if this happens from time to time.
Thanks.

 

It could just be sensors acting up in the cold weather. I had an error code about a knock sensor last week that last for a day or so, then disappeared. Hasn't come back yet.

 

Unless you cleared them they should still be present but from the sounds of it not current, so MIL off. (I suppose some OBD tools might - wrongly - fail to report them.) If you didn't clear them and they're absent then chances are your battery went flat enough to clear them.

You should also have one of P1000 or P1111, which do you have?

 

I rechecked the codes and found 4. P0107, P0108, P0107, P1111 plus as the temperature has gone up the CEL has turned back on with a P0107. Nothing fixes itself, oh well. Ill check the connection when it warms up.

 

I hate to say this but those look to be BARO faults and if so indicate a fault inside the PCM (which is where the BARO sensor is on these cars I believe).

Your best plan is to check the exact Jaguar codes PDF for your specific MY car.