twiggy144 Posted August 12, 2022 Share Posted August 12, 2022 2016 Fusion 2.0 AWD with 80000 km . Got the check engine light. Read the code P0299 (underboost). Erased the code with my code reader. A week later a new code P0234 (overboost) came. Erased the code. Checked impedance on both turbocharger bypass valve solenoid (TCBV) , both within specs at 24 ohms. I know correct impedance does not exclude a malfunction of these TCBV's. Waiting to see what happens next. In the meantime, I come here to seek some guidance or some clues. I fear I might have to go to the dealer with this. 0 Quote Link to comment Share on other sites More sharing options...
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