| OBD-11 code | Fault location | Probable cause |
| PO, P2, UO | Refer to OBD-11 trouble code tables | – |
| P1100 | Barometric pressure (BARO) sensor- circuit malfunction | Wiring, BARO sensor, ECM |
| 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 | Throttle actuator control (TAC) clutch – circuit malfunction | Wiring, magnetic clutch, ECM |
| P1127 | Throttle actuator control (TAC) power source – circuit malfunction | Wiring, ECM |
| P1128 | Throttle actuator control (TAC) lock – malfunction | TAC motor, throttle body, ECM |
| P1129 | Throttle actuator control (TAC) system- malfunction | TAC system, ECM |
| P1130 | Heated oxygen sensor (H02S)- LH front- range/performance malfunction | Wiring, H02S, air induction system, fuel pressure, injector(s), ECM |
| P1133 | Heated oxygen sensor (H02S) – LH front – response malfunction | Wiring, H02S, air induction system, fuel pressure, injector(s), ECM |
| P1135 | Heated oxygen sensor (H02S) – LH front- heater circuit malfunction | Wiring, H02S, air induction system, fuel pressure, injector(s), ECM |
| P1150 | Heated oxygen sensor (H02S) – RH front – performance malfunction | Wiring, H02S, ECM |
| P1153 | Heated oxygen sensor (H02S)- RH front- response malfunction | H02S |
| P1155 | Heated oxygen sensor (H02S) – RH front- heater circuit malfunction | Wiring, H02S, ECM |
| P1300 | Ignition control – circuit malfunction – Sienna -+2000/Solara 3.0L | Wiring, ignition module, ECM |
| P1300 | Ignition control – cylinder No.1 – circuit malfunction | Wiring, ignition coil/module, ECM |
| P1305 | Ignition control – cylinder No.2 – circuit malfunction | Wiring, ignition coil/module, ECM |
| P1310 | Ignition control – cylinder No.3 – circuit malfunction | Wiring, ignition coil/module, ECM |
| P1315 | Ignition control – cylinder No.4 – circuit malfunction | Wiring, ignition coil/module, ECM |
| P1320 | Ignition control – cylinder No.5 – circuit malfunction | Wiring, ignition coil/module, ECM |
| P1325 | Ignition control – cylinder No.6 – circuit malfunction | Wiring, ignition coil/module, ECM |
| P1335 | Crankshaft position (CKP) sensor – no signal | Wiring, CKP sensor, starter motor, ECM |
| P1345 | Variable valve timing sensor – LH bank – circuit malfunction | Wiring, valve timing sensor, ECM |
| P1346 | Variable valve timing sensor – LH bank – range/performance problem | Valve timing, ECM |
| P1349 | Variable valve timing system – LH bank – malfunction | Valve timing, oil control valve, valve timing control module, ECM |
| P1350 | Variable valve timing sensor – RH bank – circuit malfunction | Wiring, valve timing sensor, ECM |
| P1351 | Variable valve timing sensor – RH bank – range/performance problem | Valve timing, ECM |
| P1354 | Variable valve timing system – RH bank – malfunction | Valve timing, oil control valve, valve timing control module, ECM |
| P1400 | Throttle position (TP) sensor 2 – circuit malfunction | Wiring, TP sensor, ECM |
| P1:401 | Throttle position (TP) sensor 2 – range/performance problem | TP sensor |
| P1410 | Exhaust gas recirculation (EGR) valve position sensor – malfunction | Wiring, EGR valve position sensor, ECM |
| P1411 | Exhaust gas recirculation (EGR) valve position sensor – ra.nge/performance problem | EGR valve position sensor |
| P1500 | Starter signal – circuit malfunction | Wiring, ignition switch, engine control relay, ECM |
| P1520 | Stop lamp switch – signal malfunction | Wiring, stop lamp switch, ECM |
| P1550 | Electrical load sensor – circuit malfunction | Wiring, electrical load sensor, ECM |
| P1551 | Electrical load sensor, circuit low – circuit malfunction | Wiring, electrical load sensor, ECM |
| P1552 | Electrical load sensor, circuit high – circuit malfunction | Wiring, electrical load sensor, ECM |
| P1566 | Cruise control switch – circuit malfunction | Wiring, cruise control switch, ECM |
| P157Q· | Cruise control laser radar sensor – malfunction | Cruise control laser radar sensor, cruise control module, ECM |
| P1572 | Cruise control laser radar sensor – improper aiming of beam axis | Cruise control laser radar sensor alignment, cruise control laser radar sensor |
| P1575 | Cruise control/skid control warning buzzer – malfunction | Wiring, warning buzzer, ABS control module |
| P1578 | Brake system – malfunction | ABS system, ABS control module |
| P1600 | Engine control module (ECM) – supply voltage | Wiring, ECM |
| P1602 | Battery voltage monitor – malfunction | Wiring, battery, ECM |
| P1605 | Knock control – malfunction | ECM |
| P1607 | Cruise control input processor – malfunction | Wiring, ECM |
| P1615 | CAN data bus, cruise control module – communication error | Wiring, cruise control module, ECM |
| P1616 | CAN data bus, cruise control module – communication error | Wiring, ECM, cruise control module |
| P1630 | Tract.ion control system – malfunction | Wiring, throttle control module, ECM |
| P1631 | Controller area network (CAN) data bus- communication malfunction | Wiring, ASS/traction control module, ECM |
| P1633 | Throttle actuator control (TAC) system – malfunction | ECM |
| P1645 | Body control module (BCM) – malfunction | BCM, A/C control module, wiring |
| P1647 | Transmission control module (TCM) – system malfunction | Trouble code(s) stored |
| P1656 | Oil control valve/variable valve timing – LH bank – malfunction | Wiring, oil control valve, ECM |
| P1663 | Oil control valve/variable valve timing – RH bank – malfunction | Wiring, oil control valve, ECM |
| P1690 | Oil control valve/variable valve timing – malfunction | Wiring, oil control valve, ECM |
| P1692 | Variable valve timing – malfunction | Wiring, valve timing sensor, ECM |
| P1693 | Variable valve timing – malfunction | Wiring, valve timing sensor, ECM |
| P1700 | Output shaft speed (OSS) sensor | Wiring, OSS sensor, ECM |
| P1705 | AT – direct clutch speed sensor | Wiring, direct clutch speed sensor, ECM |
| P1715 | Rear wheel speed sensor(s)- malfunction | Wiring, rear wheel speed sensor(s), ECM |
| P1725 | Input shaft speed (ISS) sensor/turbine shaft speed (TSS) sensor- circuit malfunction | Wiring, ISS sensorfTSS sensor, ECM |
| P1730 | Intermediate shaft speed sensor- AT | Wiring, intermediate shaft speed sensor, ECM |
| P1755 | Torque converter clutch (TCC) solenoid – circuit malfunction | Wiring, torque converter, TCC solenoid, ECM |
| P1760 | AT – pressure control shift solenoid | Wiring, shift solenoid, ECM |
| P1765 | AT – pressure control shift solenoid | Wiring, shift solenoid, ECM |
| P1770 | Differential lock solenoid – circuit malfunction | Wiring, differential lock solenoid, ECM |
| P1780 | Park/neutral position (PNP) switch/transmission range (TR) sensor- circuit malfunction
| Wiring, PNP switchfTR sensor, ECM |
| P1781 | Shift lever switch – malfunction | Wiring, shift lever switch, ECM |
| P1790 | Shift/timing solenoid | Wiring, shift/timing solenoid, ECM |
| P1810 | CAN data bus malfunction – malfunction | Wiring |
| P1815 | Shift control solenoid – malfunction | Wiring, shift control solenoid, ECM |
| P1818 | Shift control solenoid – circuit malfunction | Wiring, shift control solenoid, ECM |
| 82785 | Ignition switch ON – malfunction | Immobilizer system |
| 82786 | Ignition switch OFF – malfunction | Immobilizer system |
| 82795 | Unrecognized key code | Immobilizer system |
| 82796 | Immobilizer system – no communication | Immobilizer system |
| 82797 | Communication – malfunction 1 | Immobilizer system |
| 82798 | Communication – malfunction 2 | Immobilizer system |
| 82799 | Immobilizer- malfunction | Wiring, immobilizer system, ECM |