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International Automotive Technicians Network
Re: P0234 Turbo Overboost Condition
Posted to Technical Discussion Forum on 1/22/2021

Well I am happy to report this truck is fixed. I rechecked mechanical boost pressure against what the ECM was reading and it was within .5 PSI so within specs there.

Went back and retraced my steps starting with freeze frame data. Boost pressure was at 26 PS... Login to read more.