According to my scanner, this is the reason my check engine light is on. The code stands for:
Manifold Absolute Pressure/BARO Circuit
P1111 If a pending code = system tests passed (Jaguar)
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage (Jaguar)

I took it to my trusted independent repairman today. His opinion is to not worry about it and he cleared the code. He said if it happens again he will dig further but he wasn't worried about it.
Should I be?
Thanks.

 

If it comes back, fix. Until then make sure the P1111 comes back and car runs CL (closed loop). If not, it may be unable to flag codes and will run rich so fixing will be tougher with shortage of data.