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 barometric pressure reading was higher or lower than the other pressure sensors at ignition off, or the sensor reading is erratic during engine running.

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P012B-00	(Turbocharger/Supercharger Inlet Pressure Sensor Circuit Range/Performance)	1	Diagnosis condition	Engine running.
			Signal (terminal)	(129)
			Threshold	Cumulative sum of error in 30 seconds is > 15 kPa, which is ≥ 0.1 kPa. Where tolerance is defined as 28.74 kPa.
			Diagnosis delay time	Diagnostic runs continuously when the engine is running
		2	Diagnosis condition	8 hour cold soak Engine running.
			Signal (terminal)	(129)
			Threshold	Compressor inlet pressure sensor reading < 18 kPa OR Compressor inlet pressure sensor reading > 144.31 kPa OR Compressor inlet pressure to the most accurate remaining pressure sensor is > 3.19 kPa
			Diagnosis delay time	Diagnostic runs continuously when the engine is running