hello, I have a gp 1.3 90 with about your same problem. While I pulled the 5a at a certain point, he stopped pulling. After various saints I have encountered in the order: operation wg (on my everything is ok), log of various parameters on the esm and check the sleeves. In the end I disconnected the sleeve of the ic, and I noticed that accelerating the turbine is not blowing. Turbine ko. See, first, if the wg works on yours, then look for any leaks in the hoses, and finally try to disassemble the turbine according to me