Hi,
As far as the code, it indicates an under boost. Yes, it could be related to the waste gage and a few other things. For example, a faulty bypass solenoid, wastegate actuator, and so on can be the problem. It could be something as simple as a loose connection on the intake duct, a leak between the turbo and the throttle body, or something restricting air flow. Have you checked to make sure there are no leaks in the charge air tube or anywhere in the turbo system?
What I suggest is this. Because different things can be the cause, we need to do some diagnosing. If you look below, I attached the diagnostics specific to the code. Take a look through them and let me know if you are comfortable performing them. Note, based on some of the testing, I may need to get additional information for you. However, I won't know which way to go until certain tests are completed.
Take a look and let me know if you feel comfortable performing them.
Take care,
Joe
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Tuesday, August 20th, 2024 AT 6:27 PM