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365 Posts
Discussion Starter · #1 ·
I have about 2000 miles on a rebuilt turbo, but re-used the old wastegate. Today my CEL came on (steady). It is kicking out the P0299, underboost code.

1. Is it safe to drive over the weekend until I can talk to the shop that rebuilt the turbo on Monday?

2. Without looking, is it a good possibility it is the wastegate?


8,751 Posts
Looks like it could be a number of things. I'd start by checking your piping and make sure that everything is all hooked up.

16683/P0299/000665 - Boost Pressure Regulation: Control Range Not Reached
Possible Symptoms

Reduced Power Output
Limp Mode

Possible Causes

Hoses/Pipes incorrect connected, disconnected or leaking
Charger Pressure Control defective
Turbocharger faulty
Diverter Valve faulty

Possible Solutions

Check Hoses/Pipes to/between Components
Check / Clean / Replace Charge Pressure Control
Check Turbocharger
Check Diverter Valve
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