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Wastegate position sensor "A" position high, P2AB9, no boost

Flashe30

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So, got in the RR and got a "service soon" pop up and the wrench symbol.
Strange, had it happen once before a couple months ago but it never came back, service is ok. I don't have the CEL iluminated.

Immediately felt a lack of power and sure enough, no boost on the dash gauge. Checked the codes with OBDLink and it gives P2AB9 and P2AB9-00. Tried clearing the codes but it's permanent.
Checked the engine bay and the underside, 1 wastegate points up and the other one down. 1 rod was extended and 1 was pulled inwards, but that's perhaps normal bc of a mirrored setup?
I was able to move them both so the actuators aren't stuck but codes and lack of power remain after a short drive also.

Anyone else had this happen? It's a holiday weekend over here so I can't get to the dealer before Tuesday morning.

EDIT: Thinking about it, I did hear a faint, but fast ticking or rattle in the past when on boost, which I thought could be wastegate rattle if that's possible with these turbo's.
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Last edited:
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Flashe30

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After sitting for 20 hours, the "service soon" pop up and wrench symbol are gone and boost/power is back.
The P2AB9 permanent fault code stays though, all the pending faults are gone. Any ideas?
 

superj

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no idea here but i would take it to hte dealer so they can see the code and log it on your record in case it becomes a larger issue later on
 
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Flashe30

Active Member
Joined
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Location
Belgium
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'23 Ranger Raptor, BMW e61 M5, BMW e34 M5 3.6, ...
no idea here but i would take it to hte dealer so they can see the code and log it on your record in case it becomes a larger issue later on
I'll definitely will.
I've bought extended waranty of 5 years btw, happy with that.
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