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International Automotive Technicians Network
Re: CUMMINS 1SB CODE 1921
Posted to HD/Fleet Forum on 6/12/2021

John,

Did you calibrate and install the new actuator with Insite? What is the actual VGT position vs commanded during regen? What is the EGR position during regen?

Is the engine up to proper cooling system temp?

No exghaust leaks between the turbo and DO... Login to read more.