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International Automotive Technicians Network
VGT High Backpressure and Engine Damage
Posted to HD/Fleet Forum on 6/6/2020 1 Reply

Mercedes vehicles with the OM642 VGT turbodiesel engine can exhibit a no-start condition when the exhaust backpressure sensor has failed with a sufficiently bad reading. In the service manual there are some clues as to why this might occur.

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