Toyota OBD/OBD2 Codes >> 4Runner – Land Cruiser – Sequoia – Tundra (1998 – 2009)

Model Year Engine identification System
4Runner 4.7L 2003-09 2UZ-FE   SFI
Land Cruiser 4.7L 1998-07 2UZ-FE   SFI
Land Cruiser 5.7L 2008-09 3UR-FE   SFI
Sequoia 4.7L 2001-08 2UZ-FE   SFI
Sequoia 5.7L 2008 3UR-FE   SFI
Tundra 4.7L 2000-08 2UZ-FE   SFI
Tundra  5.7L 2007-08 3UR-FE   SFI

General information

  • Engine control module (ECM) incorporates self-diagnosis function.
  • Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to workshop.


  • Trouble codes can be displayed by using a Scan Tool connected to the data link connector (DLC) 1.


  • After the faults have been rectified, trouble codes can be erased by using a Scan Tool connected to the data link connector (DLC) or as follows:
  • Ensure ignition switched OFF.
  • Disconnect battery ground cable for 60 seconds minimum.
  • Reconnect battery ground cable.
  • Repeat checking procedure to ensure no data remains in ECM fault memory.

NOTE: Disconnecting battery ground lead will erase trouble codes but may also erase memory from electronic units such as radio.

Trouble code identification

OBD-11 code Fault location Probable cause
PO,P2,UO Refer to OBD-11 trouble code tables
P1120 Accelerator pedal position (APP) sensor – circuit malfunction Wiring, APP sensor, ECM
P1121 Accelerator pedal position (APP) sensor – range/performance problem APP sensor, ECM
P1125 Throttle actuator control (TAC) motor- circuit malfunction Wiring, TAC motor, ECM
P1126 Magnetic clutch – circuit malfunction Wiring, magnetic clutch, ECM
P1127 Traction control system – circuit malfunction Wiring, ECM
P1128 Throttle actuator control (TAC) motor- lock malfunction TAC motor, throttle body, ECM
P1129 Throttle actuator control (TAC) system – malfunction Wiring, ECM
P1200 Fuel pump (FP) relay/ECM – circuit malfunction Wiring, fuel pumplcontrol module, ECM
P1300 Ignition control – cylinder No.1 – circuit malfunction Wiring, ignition module/coil, ECM
P1305 Ignition control – cylinder No.2 – circuit malfunction Wiring, ignition module/coil, ECM
P1310 Ignition control – cylinder No.3 – circuit malfunction Wiring, ignition module/coil, ECM
P1315 Ignition control – cylinder No.4 – circuit malfunction Wiring, ignition module/coil, ECM
P1320 Ignition control – cylinder No.5 – circuit malfunction Wiring, ignition module/coil, ECM
P1325 Ignition control – cylinder No.6 – circuit malfunction Wiring, ignition module/coil, ECM
P1330 Ignition control – cylinder No.7 – circuit malfunction Wiring, ignition module/coil, ECM
P1335 Crankshaft position (CKP) sensor- no signal Wiring, CKP sensor, starter motor, ECM
P1340 Ignition control – cylinder No.8 – circuit malfunction – Land Cruiser ( -2002) Wiring, ignition module/coil, ECM
P1340 Camshaft position (CMP) sensor A, bank 1 – circuit malfunction Wiring, CMP, mechanical fault, ECM
P1341 Camshaft position (CMP) sensor A, bank 1 – circuit malfunction Wiring, CMP, mechanical fault, ECM
P1342 Camshaft position (CMP) sensor A, bank 1 – input low – circuit malfunction Wiring, CMP, mechanical fault, ECM
P1343 Camshaft position (CMP) sensor A, bank 1 – input high – circuit malfunction Wiring, CMP, mechanical fault, ECM
P1440 Secondary air injection (AIR) switching valve, bank 1 – circuit malfunction Wiring, AIR, ECM
P1441 Secondary air injection {AIR) switching valve, valve stuck open, bank 1 -circuit malfunction Wiring, AIR, ECM
P1442 Secondary air injection {AIR) switching valve, valve stuck closed, bank 1 – circuit malfunction Wiring, AIR, vacuum hose, ECM
P1443 Secondary air injection (AIR) switching valve, bank 2 – circuit malfunction Wiring, AIR, ECM
P1444 Secondary air injection (AIR) switching valve, valve stuck open, bank 2 – circuit malfunction Wiring, AIR, ECM
P1445 Secondary air injection (AIR) switching valve, valve stuck closed, bank 2 – circuit malfunction Wiring, AIR, vacuum hose, ECM
P1500 Starter signal – circuit malfunction Wiring, ignition switch, engine control relay, ECM
P1520 Stop lamp switch – signal malfunction Wiring, stop lamp switch, ECM
P1600 Engine control module (ECM) -supply voltage Wiring, ECM
P1607 Cruise control input processor – malfunction Wiring, ECM
P1613 Secondary air injection (AIR) – malfunction Wiring, AIR, ECM
P1614 Secondary air injection (AIR), bank 2 – malfunction Wiring, AIR, ECM
P1633 Engine control module (ECM) – throttle actuator control (TAC) system – malfunction ECM
P1645 Body control module – malfunction Body control module, AJC control module, wiring
P1780 Park/neutral position (PNP) switch – circuit malfunction Wiring, PNP switch, ECM
P1782 Transfer box low ratio switch – circuit malfunction Wiring, transfer box low ratio switch, ECM
P1783 Transfer box neutral switch – circuit malfunction Wiring, transfer box neutral switch, ECM