Code P25B4 Wastegate stuck closed

[EcoBlueMav]

I had the CEL and wrench come on the other day with code P25B4 wastegate stuck closed, and the truck is also in limp mode. I see a lot of people have had the wastegate actuator replaced, which I plan to do myself to see if it fixes the problem before going down the turbo replacement route. The question is, can anyone confirm if the PCM needs to be reprogrammed once the new actuator is installed?

TIA

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[Quest]

You would need to clear the code & reset KAM

 

[EcoBlueMav]

You would need to clear the code & reset KAM

Perfect, Thanks.

Have you done one before? Location looks like a pain. Waiting for the part to arrive, then I will start to tackle this.

 

[Quest]

Bit of a back breaker
Make sure the wastegate isn't seized

 

[EcoBlueMav]

Bit of a back breaker
Make sure the wastegate isn't seized

Thanks for the file, it's much appreciated.

I will be checking the wastegate to be sure it's not seized. Right now, the truck will drive fine for 10-20 minutes after being shut off for a bit, then go back into limp mode.

 

[Mudduck]

Resurrecting Lazarus here....

Do you guys have a part number for this?
I do not have a CEL or limp mode. But under boost/heavy throttle my boost pressure does spike. i have seen it as high as 24.85

Under heavy throttle its sounds like a chuffing/squeal noise. or maybe like a roost of turkeys. I changed my intercooler to the CVF unit after i saw the factory was leaking during smoke test. I had it smoke tested again today at a performance shop and no leaks.

Any other ideas?

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