Examine the pipework leading to the pre-turbine pressure sensor for obstructions, and also inspect the differential sensor pipework for blockages, in addition to reviewing live data for DPF pressures.
To ascertain the functionality of the crank sensor, it is advisable to utilise an oscilloscope to verify signal production; nonetheless, it is likely operational, as the engine would cease to function in its absence. I presume it is a diesel engine. A tone wheel is located on the crank behind the flywheel, generating the crank signal; in diesel engines, the cam sensor is utilised for starting, while the crank signal assumes control once the engine is operational.
Which equipment have you utilised for scanning?