Esto es lo que he encontrado en la Wiki de Ross-tech, lo siento pero mi ingles no da mucho de si, pero creo que es algo del inmovilizador.

17978/P1570 - Engine Start Blocked by Immobilizer
Possible Symptoms
Engine starting but stalling immediately
Possible Causes
Key(s) not matched
Instrument Cluster not matched
Engine Control Unit (ECU) not matched
Engine Control Unit (ECU) Power Supply faulty
Possible Solutions
Match Key(s)/Instrument Cluster/Engine Control Unit (ECU)
Check Engine Control Unit (ECU) Power Supply (Relay)
Special Notes
If no other immobilizer related fault codes are stored and the immobilizer related meas. blocks are fine except Engine Start not allowed, try cold-booting the car. Remove both battery cables from the battery. Short the battery cables together (away from the battery) for about 15 seconds. Reconnect the battery. (Example)
Retrieved from "http://wiki.ross-tech.com/index.php/17978/P1570"

Del otro error no he encontrado nada.
Que sintomas tienes ?

Salu2