Self-diagnosis results display item

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

CONSULT display	Malfunction	Refer To
Vehicle height sensor [C1801]	Vehicle height sensor voltage is less than 0.2V or greater than 4.8V for more than 60 seconds.	"DIAGNOSIS PROCEDURE ".
Compressor relay [C1802]	Driving transistor for compressor relay is OFF and monitor voltage continues at a high level for more than 10 seconds. Driving transistor for compressor relay is ON and monitor voltage continues at a low level for more than 5 seconds.	"DIAGNOSIS PROCEDURE ".
Exhaust solenoid [C1803]	Driving transistor for exhaust valve solenoid is OFF and monitor voltage continues at a high level for more than 10 seconds. Driving transistor for exhaust valve solenoid is ON and monitor voltage continues at a low level for more than 5 seconds.	"DIAGNOSIS PROCEDURE ".
Vehicle height adjusting malfunction (compressor)[C1804]	Continuous compressor relay ON time is more than 120 seconds.	"DIAGNOSIS PROCEDURE ".
Vehicle height adjusting malfunction (exhaust solenoid)[C1805]	Continuous exhaust valve solenoid ON time is more than 120 seconds.	"DIAGNOSIS PROCEDURE ".
Vehicle height sensor locking malfunction [C1806]	Output sensor voltage variation ±0.02V is more than 100 seconds when vehicle height range is normal.	"DIAGNOSIS PROCEDURE ".
Sensor 5V malfunction [C1807]	Sensor reference voltage is less than 0.8V or more than 6V for 20 seconds.	"DIAGNOSIS PROCEDURE ".
Integral time malfunction by supplying air [C1808]	A suspension air compressor ON request has been in effect for 180 seconds and the suspension air compressor has not activated during that time.	"DIAGNOSIS PROCEDURE ".