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Code P0234 Won't Go Away

7K views 7 replies 5 participants last post by  magneto 
#1 ·
I keep getting error code P0234 on my 2016 ecoboost. The only mod I have is a mbrp race cat back exhaust. The car is under warranty and has been taken to the dealer twice for service. The first time they replaced the sensor and the second time a new turbo was installed. any ideas on what could be causing the problem or ways to fix it? P0234 is a code for overboost.
 
#2 ·
Faulty wastegate actuator
 
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#5 ·
The OP said they replaced the turbo which comes with a new waste gate actuator. Of course the new replacement could be defective but if you had the code before the swap and still had it after the swap statistically it would be an extremely small likely hood the actuator is causing the problem.

Dave
 
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