Hi there,
Recently we couldnt start the Jag up (1998 XJ8).
Found out that common issue and started it, unfortuantly in teh process it blew the airbox to bits.
With the new box on, the car was taken out and all was fine, except eventually the "Restricted Performance" issue appeared.
We found the problem was due to the fact the lead wasnt plugged into the airflow sensor, but in the process, the plug was leaning against teh hot block of the engine and partially melted (still connected into socket fine though).

With it plugged in, we are still getting the error.

I have plugged in a nice little device into the OBDII port and got these errors:-
P0102 Mass or Volume Air Flow Circuit Low Input
P0112 Intake Air Temperature Sensor 1 Circuit Low
P1230 Unknown powertrain DTC (manufacturer fuel air metering)

Could it be the lead/socket damage or could a sensor or something else be damaged from the fact the lead was against the hot block of the engine and fried a sensor?

Any help would be great.

(the device i used to get the codes was a "carchip" by Davis.
My laptop OBDII cable just freaks the car out with all sorts of errors.

Many thanks,
Stuart

 

I will have a look over the weekend at the connectors.
The car has been used a around 10 times since the error started about 2/3 weeks ago, the error hasn't gone anywhere