Self-Diagnostic Result

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

Refer to DTC Index .

Display Item List

DTC	Items (CONSULT screen terms)	Diagnostic item is detected when...	Possible cause
U1000	CAN COMM CIRCUIT	When A/C auto amp. is not transmitting or receiving CAN communication signal for 2 or more seconds.	CAN communication system
U1010	CONTROL UNIT (CAN)	When detecting error during the initial diagnosis of CAN controller of A/C auto amp.	A/C auto amp.
B257B	AMBIENT SENSOR (SHORT)	Detected temperature at ambient sensor 55°C (131°F) or more	Ambient sensor A/C auto amp. Harness and connector (Ambient sensor circuit is open, or there is a short in the circuit)
B257C	AMBIENT SENSOR (OPEN)	Detected temperature at ambient sensor -30°C (-22°F) or less
B2578	IN-VEHICLE SENSOR (SHORT)	Detected temperature at in-vehicle sensor 55°C (131°F) or more	In-vehicle sensor A/C auto amp. Harness and connector (In-vehicle sensor circuit is open, or there is a short in the circuit)
B2579	IN-VEHICLE SENSOR (OPEN)	Detected temperature at in-vehicle sensor -30°C (-22°F) or less
B2581	INTAKE SENSOR (SHORT)	Detected temperature at intake sensor 55°C (131°F) or more	Intake sensor A/C auto amp. Harness and connector (Intake sensor circuit is open, or there is a short in the circuit)
B2582	INTAKE SENSOR (OPEN)	Detected temperature at intake sensor -30°C (-22°F) or less
B2630 ^*	SUNLOAD SEN (SHORT)	Detected calorie at sunload sensor 1395 w/m ² (1200 kcal/m ² .h)	Sunload sensor A/C auto amp. Harness and connector (Sunload sensor circuit is open, or there is a short in the circuit)
B2631 ^*	SUNLOAD SEN (OPEN)	Detected calorie at sunload sensor 0 w/m ² (0 kcal/m ² .h)
B2632	DR AIR MIX DOOR MOT (SHORT)	Air mix door PBR LH position 5% or less	Air mix door motor LH A/C auto amp. Harness and connector (CAN communication line is open or shorted) (Air mix door motor is open or shorted)
B2633	DR AIR MIX DOOR MOT (OPEN)	Air mix door PBR LH position 95% or more
B2634	PASS AIR MIX DOOR MOT (SHORT)	Air mix door PBR RH position 5% or less	Air mix door motor RH A/C auto amp. Harness and connector (CAN communication line is open or shorted) (Air mix door motor is open or shorted)
B2635	PASS AIR MIX DOOR MOT (OPEN)	Air mix door PBR RH position 95% or more
B2636	DR VENT DOOR FAIL	When the malfunctioning door position is detected at VENT position	Mode door motor A/C auto amp. Harness and connector (CAN communication line is open or shorted) (Mode door motor is open or shorted)
B2637	DR B/L DOOR FAIL	When the malfunctioning door position is detected at B/L position
B2638	DR D/F1 DOOR FAIL	When the malfunctioning door position is detected at FOOT position
B2639	DR DEF DOOR FAIL	When the malfunctioning door position is detected at DEF position
B263D	FRE DOOR FAIL	When the malfunctioning intake door position is detected at FRE position	Intake door motor A/C auto amp. Harness and connector (CAN communication line is open or shorted) (Intake door motor is open or shorted)
B263E	20P FRE DOOR FAIL	When the malfunctioning intake door position is detected at 20% FRE position
B263F	REC DOOR FAIL	When the malfunctioning intake door position is detected at REC position
B2654	D/F2 DOOR FAIL	When the malfunctioning door position is detected at D/F position	Mode door motor A/C auto amp. Harness and connector (CAN communication line is open or shorted) (Mode door motor is open or shorted)
B2655	B/L2 DOOR FAIL	When the malfunctioning door position is detected at B/L2 position

B27B0

A/C AUTO AMP.

When the malfunctioning door position is detected at A/C auto amp. EEPROM system.

A/C auto amp.

*: Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diagnosis reports an error even though the sunload sensor is functioning normally.