308 GTi Battery Light and Engine Light

[jferreira]

Hi, I know this is a long shot but here it goes...
My car suddenly started to develop this issue where if I pull from low RPMs I get a cut off the throttle for a second then it goes back to normal, battery and engine lights come on but after a few seconds it disappears if I drive calmly.
If I continue to acelerate full throtle going through the revs and gears, it will eventually light the STOP light and cut power until I stop and engine shuts down by itself, and throws all sort of errors, like the ECU lost connection to all modules.
The diagnostic tool gave the error P1632:47.

If I drive normally, the car will never throw any errors
Anyone had similar issues?

[gwest]

What engine does it have and how many kms?

[jferreira]

It's a GTi, 1.6cc, 272hp, with 85k kms