OBII code p470-71

i have passat vr6 1996 and a code p470-71 if somebody could help me it will be a life saver and gas saver plesase, por favor., thanks, gracias.

P0470 or P0471 are not valid code numbers.

Could it be a P1470 or P1471?

ok sorry and thanks, the problem its something like "exhaust pressure sensor circuit malfunction" and i really don't know what to do, i aprecciate for your help thanks,