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DTC Chart

WARNING: This page is about a different car, the 2013 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
DTC CONSULT Diagnostic item is detected when...
 
P1801 POWER SUPPLY CIRCUIT FOR TRANSFER CONTROL UNIT 		 *INITIAL START* Due to removal of battery which cuts off power supply to transfer control unit, self-diagnosis memory function is suspended.
[P1802] CONTROL UNIT (1, 2, 3) Malfunction is detected in the memory (RAM) system of transfer control unit.
P1803 TRANSFER CONTROL UNIT  Malfunction is detected in the memory (ROM) system of transfer control unit.
P1804 TRANSFER CONTROL UNIT  Malfunction is detected in the memory (EEPROM) system of transfer control unit.
P1807 VEHICLE SPEED SENSOR (A/T)  VHCL SPEED SEN.AT
  • Malfunction is detected in output shaft revolution signal that is output from TCM through CAN communication.
  • Improper signal is input while driving.
P1808 VEHICLE SPEED SENSOR (ABS)  VHCL SPEED SEN.ABS
  • Malfunction is detected in vehicle speed signal that is output from ABS actuator and electric unit (control unit) through CAN communication.
  • Improper signal is input while driving.
P1809 TRANSFER CONTROL UNIT  CONTROL UNIT 4 AD converter system of transfer control unit is malfunctioning.
P1810 4 LO SWITCH  4L POSI SW TF Improper signal from 4LO switch is input due to open or short circuit.
P1811 POWER SUPPLY CIRCUIT FOR TRANSFER CONTROL UNIT  BATTERY VOLTAGE Power supply voltage for transfer control unit is abnormally low while driving.
P1813 4WD SHIFT SWITCH  4WD MODE SW More than two switch inputs are simultaneously detected due to short circuit of 4WD shift switch.
P1814 WAIT DETECTION SWITCH  4WD DETECT SWITCH Improper signal from wait detection switch is input due to open or short circuit.
P1816 PNP SWITCH (A/T)  (A/T models)
P1816 PNP SWITCH (M/T)  (M/T models)		 PNP SW/CIRC When transmission range switch signal is malfunctioning.
When PNP switch signal is malfunctioning.
P1817 ACTUATOR MOTOR  SHIFT ACTUATOR
  • Motor does not operate properly due to open or short circuit in actuator motor.
  • Malfunction is detected in the actuator motor. (When 4WD shift switch is operated and actuator motor is not operated)
  • Malfunction is detected in transfer shift high relay or transfer shift low relay.
P1818 ACTUATOR POSITION SWITCH  SHIFT ACT POSI SW
  • Improper signal from actuator position switch is input due to open or short circuit.
  • Malfunction is detected in actuator position switch.
P1819 TRANSFER CONTROL DEVICE  SHIFT ACT CIR
  • Malfunction is detected in transfer shut off relay 1 and transfer shut off relay 2.
  • Malfunction occurs in transfer control device drive circuit.
P1820 ENGINE SPEED SIGNAL  ENGINE SPEED SIG
  • Malfunction is detected in engine speed signal that is output from ECM through CAN communication.
  • Improper signal is input while driving.
U1000 CAN COMM CIRCUIT  CAN COMM CIRCUIT When transfer control unit is not transmitting or receiving CAN communication signal for 2 seconds or more.
U1010 CONTROL UNIT (CAN)  CONTROL UNIT (CAN) Detecting error during the initial diagnosis of CAN controller of transfer control unit.
NOTE: If "SHIFT ACT POSI SW [P1818]" or "SHIFT ACT CIR [P1819]" is displayed, first erase self-diagnostic results. ("SHIFT ACT POSI SW [P1818]" or "SHIFT ACT CIR [P1819]" may be displayed after installing transfer control unit or transfer assembly.)
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