DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

The Engine Control Module (ECM) detected the intake manifold pressure reading was below the expected level for the engine operating conditions, within the coolant above -20 degrees Celsius (-4 degrees Fahrenheit) and below 70 degrees Celsius (158 degrees Fahrenheit)..

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P056E-00	TC_SYSTEM (Turbocharger/Supercharger Underboost)	Diagnosis condition	Ignition switch ON or engine running.
		Signal (terminal)	(-)
		Threshold	Average of (Estimated Charge Flow - Charge.Flow) over a 45 second period is ever > 0.793±0.06 kg/min. Where Diagnostic Tolerance = 0.06 kg/min. Coolant above -20 degrees Celsius (-4 degrees Fahrenheit) and below 70 degrees Celsius (158 degrees Fahrenheit).
		Diagnosis delay time	Diagnostic runs continuously when the engine is running