What is fault code p1517 and p0221 on x plate picasso diesal

This is related to Power Supply Relay for ECU (J271 or J363)

More info at ross-tech:
http://wiki.ross-tech.com/wiki/index.php/17925/P1517

try googling yout vehichle year make and model followed by fault code p1517

Error Code: P0221
Description:
Throttle Position (TP) Switch/Sensor B
Accelerator Pedal Position (APP) Switch/Sensor B Range/Performance Problem
Possible Cause:
- Accelerator cable adjustment.
- Throttle position (TP) switch/sensor .
- Accelerator pedal position (APP) switch/sensor.
- Check valve clearance, adjust if required.

possibly fuel problem or blocked egr valve

key isn't talking to the car

the p0221 is not the cat
P0221 Throttle Petal Position Sensor Switch Circuit Range Performance... and neither is the p0231 code
P0231 OBD II Trouble Code you can try reset by disconnecting battery but most likely will come back if not repaired the two codes are fuel management problems and both are circuit have another mechanic check system and problems are is it can stall and not start --not start --or stall wile driving

intake runner open or closed longer than expected ..p1517 code jaguar xk8

sorry my computer crashed and i have lost all my codes ,only hoping that i may have a back up but it appears my back up drive has crashed as well .

Hello
The engine and transmission in this cars drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPEDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM

i think you have not reconnected a multiplug somewhere on the engine thats all their is to it something you have touched is causing this problem and without a good look myself i honestly couldnt say what the problem is but its something stupid like either a bad connection in a multiplug or you have just forget to re-connect one