flaviodanielsampaio
Member
Hello! My car is having some troubles in the last two weeks. (I am sorry for my English)
It all started with a limp mode, I was driving in 5'th gear, I floored the gas pedal, and I lost the boost completely. Restarted the engine, and I got a charge control pressure - negative deviation error. I cleared the code, and since that I am having almost no boost before 2krpms , and overboosting around the 2,5k rpms. But, when the engine reaches the operating temperature , the problem goes away most of the times, and I am not getting any engine error codes.
I heared that the n75 valve could be causing the problems, I tested it with vagcom, and I was hearing a subtile electrical noise coming from it. So, I decided to remove the tubes connected to the valve, I removed the power cable, i cleaned it with wd-40, I cleaned the dirt and the excess liquid by blowing air with a small tube, placed everything back, I drove the car and it was a little bit better.
In the next day, I realized that the valve was doing a vibration sound, so probably I end out by destroying it. In the vagcom I got a:
17957 - Boost Pressure Regulation Valve (N75): Open or Short to Ground P1549 - 35-10 - - - Intermittent
I did a log with the software while driving, so if you don't mind please give it a look and help me diagnosing and fixing this problem. Thank you!
LOG VAGCOM FILE - GOOGLE DRIVE
It all started with a limp mode, I was driving in 5'th gear, I floored the gas pedal, and I lost the boost completely. Restarted the engine, and I got a charge control pressure - negative deviation error. I cleared the code, and since that I am having almost no boost before 2krpms , and overboosting around the 2,5k rpms. But, when the engine reaches the operating temperature , the problem goes away most of the times, and I am not getting any engine error codes.
I heared that the n75 valve could be causing the problems, I tested it with vagcom, and I was hearing a subtile electrical noise coming from it. So, I decided to remove the tubes connected to the valve, I removed the power cable, i cleaned it with wd-40, I cleaned the dirt and the excess liquid by blowing air with a small tube, placed everything back, I drove the car and it was a little bit better.
In the next day, I realized that the valve was doing a vibration sound, so probably I end out by destroying it. In the vagcom I got a:
17957 - Boost Pressure Regulation Valve (N75): Open or Short to Ground P1549 - 35-10 - - - Intermittent
I did a log with the software while driving, so if you don't mind please give it a look and help me diagnosing and fixing this problem. Thank you!
LOG VAGCOM FILE - GOOGLE DRIVE