OBDII Lexus Code Definitions.

Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.

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Lexus Codes
Trouble CodeFault LocationProbable Cause
B2785Ignition switch ON – malfunctionIgnition switch, engine control relay, wiring
B2786Ignition switch OFF – malfunctionIgnition switch, engine control relay, wiring
B2791Key unlock warning switch – malfunctionWiring, key unlock warning switch, engine control relay
B2795Unrecognized key codeKey, incorrect key
B2796Immobilizer system – no communicationKey, transponder, wiring, ECM
B2797Communication malfunction 1 – interferenceIncorrect key has been used, wiring, ignition module, ECM
B2798Communication malfunction 2Key, transponder, ignition module, wiring, ECM
B2799Immobilizer – malfunctionWiring, immobilizer system, ECM
P1000 – P1099 (Fuel and air metering and auxiliary emission control)
P1023Camshaft position (CMP) actuator/position sensor, circuit B, bank 2 – malfunctionCMP actuator/position sensor
P1081HC catalytic converter, switching valve, bank 1 – stuck openExhaust leak, mechanical fault, wiring, exhaust gas temperature (EGT) sensor, ECM
P1082HC catalytic converter, switching valve, bank 1 – stuck closedExhaust leak, mechanical fault, wiring, exhaust gas temperature (EGT) sensor, ECM
P1083HC catalytic converter, switching valve, bank 2 – stuck openExhaust leak, mechanical fault, wiring, exhaust gas temperature (EGT) sensor, ECM
P1084HC catalytic converter, switching valve, bank 2 – stuck closedExhaust leak, mechanical fault, wiring, exhaust gas temperature (EGT) sensor, ECM
P1100 – P1199 (Fuel and air metering)
P1100Barometric pressure (BARO) sensor – circuit malfunctionECM
P1115Coolant Temperature Sensor Circuit For Heat Storage System
P1116Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
P1117Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
P1118Coolant Temperature Sensor Circuit High for Coolant Heat Storage System
P1120Accelerator pedal position (APP) sensor – circuit malfunctionWiring, APP sensor, ECM
P1121Accelerator pedal position (APP) sensor – range/performance problemAPP sensor, ECM
P1122Coolant Flow Control Valve Position Sensor Circuit Low
P1123Coolant Flow Control Valve Position Sensor Circuit High
P1125Throttle actuator control (TAC) motor – circuit malfunctionWiring, TAC motor, ECM
P1126Throttle actuator control (TAC) clutch – circuit malfunctionWiring, magnetic clutch, ECM
P1127Throttle actuator control (TAC) power source- circuit malfunctionWiring, ECM
P1128Throttle actuator control (TAC) lock- malfunctionTAC motor, throttle body, ECM
P1129Throttle actuator control (TAC) system- malfunctionTAC system, ECM
P1130Heated oxygen sensor (H02S) – LH front – range/performance problemWiring, H02S, ECM
P1133Heated oxygen sensor (H02S) – LH front- response malfunctionH02S
P1135Heated oxygen sensor (H02S)- LH front- heater circuit malfunctionWiring, H02S, ECM
P1150Heated oxygen sensor (H02S) – RH front – range/performance problemWiring, H02S, ECM
P1153Heated oxygen sensor (H02S) – RH front – response malfunctionH02S
P1155Heated oxygen sensor (H02S) – RH front – heater circuit malfunctionWiring, H02S, ECM
P1170Port injector fuel performance – performance probleminjector, fuel pressure, ECM
P1178Direct injector fuel performance – performance probleminjector, fuel pressure, ECM
P117BDirect injector fuel performance – performance probleminjector, fuel pressure, ECM
P1200 – P1299 (Fuel and air metering – injector circuit)
P1200Fuel pump (FP) relay/engine control module   (ECM) – circuit malfunctionWiring, fuel pump relay, ECM
P1215Electronic Driving Unit Circuit
P1235Fuel high-pressure pump, bank 1 – circuit malfunctionWiring, fuel high-pressure pump, injector control module, bank 1
P1236Fuel high-pressure pump, bank 2 – circuit malfunctionWiring, fuel high-pressure pump, injector control module, bank 2
P1276Injector 2, cylinder 1 – circuit malfunctionWiring, fuse, injector, ECM
P1277Injector 2, cylinder 2 – circuit malfunctionWiring, fuse, injector, ECM
P1278Injector 2, cylinder 3 – circuit malfunctionWiring, fuse, injector, ECM
P1279Injector 2, cylinder 4 – circuit malfunctionWiring, fuse, injector, ECM
P127AInjector 2, cylinder 5 – circuit malfunctionWiring, fuse, injector, ECM
P127BInjector 2, cylinder 6 – circuit malfunctionWiring, fuse, injector, ECM
P127CInjector 2, cylinder 7 – circuit malfunctionWiring, fuse, injector, ECM
P127DInjector 2, cylinder 8 – circuit malfunctionWiring, fuse, injector, ECM
P12FFInjector control module – circuit malfunctionWiring, injector control module, injector, ECM
P1300 – P1399 (Ignition system or misfire)
P1300Ignition control – cylinder No.1 – circuit malfunctionWiring, ignition coil/module, ECM
P1305Ignition control – cylinder No.2 – circuit malfunctionWiring, ignition coil/module, ECM
P1310Ignition control – cylinder No.3 – circuit malfunctionWiring, ignition coil/module, ECM
P1315Ignition control – cylinder No.4 – circuit malfunctionWiring, ignition coil/module, ECM
P1320Ignition control – cylinder No.5 – circuit malfunctionWiring, ignition coil/module, ECM
P1325Ignition control – cylinder No.6 – circuit malfunctionWiring, ignition coil/module, ECM
P1330Ignition control – cylinder No.7 – circuit malfunctionWiring, ignition coil/module, ECM
P1335Crankshaft position (CKP) sensor – no signalWiring, CKP sensor, starter motor, ECM
P1340Camshaft position (CMP) sensor, circuit A – range/performance problemWiring, CMP, mechanical fault, ECM
P1341Camshaft position (CMP) sensor 2, bank 1 – circuit malfunctionWiring, CMP, mechanical fault, ECM
P1342Camshaft position (CMP) sensor, circuit A, low input – circuit malfunctionWiring, CMP, mechanical fault, ECM
P1343Camshaft position (CMP) sensor, circuit A, high input – circuit malfunctionWiring, CMP, mechanical fault, ECM
P1345Variable valve timing sensor – LH bank – circuit malfunctionWiring, valve timing sensor, ECM
P1346Variable valve timing sensor – LH bank – range/performance problemValve timing, ECM
P1349Variable valve timing system – LH bank – malfunctionValve timing, oil control valve, valve timing control module, ECM
P1350Variable valve timing sensor – RH bank – circuit malfunctionWiring, valve timing sensor, ECM
P1351Variable valve timing sensor – RH bank – range/performance problemValve timing, ECM
P1354Variable valve “timing system – RH bank – malfunctionValve timing, oil control valve, valve timing control module, ECM
P1360Camshaft position (CMP) actuator, bank 1, circuit A – circuit malfunctionWiring, CMP, ECM
P1361Camshaft position (CMP) actuator, bank 2, circuit A – circuit malfunctionWiring, CMP, ECM
P1362Camshaft position (CMP) actuator, bank 1, circuit B – circuit malfunctionWiring, CMP, ECM
P1363Camshaft position (CMP) actuator, bank 2, circuit B – circuit malfunctionWiring, CMP, ECM
P1364Camshaft position (CMP) actuator, bank 1, circuit C – circuit malfunctionWiring, CMP, ECM
P1365Camshaft position (CMP) actuator, bank 2, circuit C – circuit malfunctionWiring, CMP, ECM
P1366Camshaft position (CMP) actuator, bank 1, circuit E – circuit malfunctionWiring, CMP, ECM
P1367Camshaft position (CMP) actuator, bank 2, circuit E – circuit malfunctionWiring, CMP, ECM
P1400 – P1499 (Emission control)
P1400Throttle position (TP) sensor 2 – circuit malfunctionWiring, TP sensor, ECM
P1401Throttle position (TP) sensor 2 – range/performance problemTP sensor
P1410Exhaust gas recirculation (EGR) valve position sensor – malfunctionWiring, EGR valve position sensor, ECM
P1411Exhaust gas recirculation (EGR) valve position sensor – range/performance problemEGR valve position sensor
P1420Evaporative emission (EVAP) system – small leakEVAP canister, EVAP canister purge valve, hose leak
P1421Evaporative emission (EVAP) system – large leakEVAP canister, EVAP canister purge valve, hose leak
P1422Fuel tank system/small leak detected – mechanical faultFuel tank system, fuel pump control module
P1423Fuel tank system/small leak detected – mechanical faultFuel tank system, fuel pump control module
P1424Fuel tank system/leak – mechanical faultFuel tank system, fuel pump control module
P1438HC catalytic converter, variable valve – circuit lowVacuum switching valve (VSV), wiring, ECM
P1440Secondary air injection (AIR) switching valve, bank 1 – circuit malfunctionWiring, AIR valve, ECM
P1441Secondary air injection (AIR) switching valve, valve stuck open, bank 1 – circuit malfunctionWiring, AIR valve, ECM
P1442Secondary air injection (AIR) switching valve, valve stuck closed, bank 1 – circuit malfunctionWiring, AIR valve, vacuum hose, ECM
P1443Secondary air injection (AIR) switching valve, bank 2 – circuit malfunctionWiring, AIR valve, ECM
P1444Secondary air injection (AIR) switching valve, valve stuck open, bank 2 – circuit malfunctionWiring, AIR valve, ECM
P1445Secondary air injection (AIR) switching valve, valve stuck closed, bank 2 – circuit malfunctionWiring, AIR valve, vacuum hose, ECM
P1450Fuel tank pressure sensor- circuit malfunctionWiring, fuel tank pressure sensor, ECM
P1451Fuel tank pressure sensor, range/performance problem – circuit malfunctionWiring, fuel tank pressure sensor, ECM
P1452Fuel tank pressure sensor, low input- circuit malfunctionWiring, fuel tank pressure sensor, ECM
P1453Fuel tank pressure sensor, high input – circuit malfunctionWiring, fuel tank pressure sensor, ECM
P1500 – P1599 (Vehicle or idle speed control)
P1500Starter signal – circuit malfunctionWiring, ignition switch, engine control relay, ECM
P1507PTC AC Auxiliary Heater Disabled Low
P1508PTC AC Auxiliary Heater Disabled High
P1520Stop lamp switch – signal malfunctionWiring, stop lamp switch, ECM
P1550Battery Current Sensor Circuit Range/Performance
P1551Battery Current Sensor Circuit Low Input
P1552Battery Current Sensor Circuit High Input
P1555Reactor Temperature Sensor Circuit Low
P1556Reactor Temperature Sensor Circuit High
P1557DC/DC Converter Temperature Sensor Circuit
P1565Cruise control switch – circuit malfunctionWiring, cruise control switch, ECM
P1566Cruise control switch – circuit malfunctionWiring, cruise control switch, ECM
P1570Cruise control laser radar sensor – malfunctionCruise control laser radar sensor, cruise control module, ECM
P1572Cruise control laser radar sensor – improper aiming of beam axisCruise control laser radar sensor alignment, cruise control laser radar sensor
P1575Cruise control/skid control warning buzzer- malfunctionWiring, warning buzzer, A8S control module
P1578Brake system – malfunctionA8S system, A8S control module
P1600 – P1699 (ECM – computer output circuit)
P1600Engine control module (ECM) -supply voltageWiring, ECM
P1602Battery voltage monitor – malfunctionWiring, battery, ECM
P1603Engine Stall History
P1604Startability Malfunction
P1605Knock control – malfunctionECM
P1607Cruise control input processor – malfunctionWiring, ECM
P1613Secondary air injection (AIR) – malfunctionWiring, AIR, ECM
P1614Secondary air injection driver (AIR), bank 2 – malfunctionWiring open/short circuit, (AIR), ECM
P1615Data bus, cruise control module – communication errorCAN data bus, cruise control module, ECM
P1616Data bus, cruise control module – communication errorCAN data bus, ECM, cruise control module
P1617Cruise control module – circuit malfunctionWiring, cruise control module, ECM
P1630Communication Error Between From ECM To VSC
P1631Communication Error Between From ECM To VSC
P1633Throttle actuator control (TAC) system – malfunctionECM
P1645Body control module (BCM) – malfunction8CM, AIC control module, CAN data bus
P1647Transmission Control Module System Malfunction
P1656Oil control valve – LH bank – malfunctionWiring, oil control valve, ECM
P1663Oil control valve – RH bank – malfunctionWiring, oil control valve, ECM
P1690OCV for VVTL Circuit Malfunction
P1692OCV for VVTL Open Malfunction
P1693OCV for VVTL Close Malfunction
P1700 – P1799 (Transmission)
P1700Output Shaft Speed Sensor
P1705AT – direct clutch speed sensorWiring, direct clutch speed sensor, ECM
P1715Rear Wheel Speed Sensor Malfunction
P1725Input shaft speed (ISS) sensor/turbine shaft speed (TSS) sensor – circuit malfunctionWiring, ISS sensor/TSS sensor, ECM
P1730Intermediate shaft speed sensor- ATWiring, intermediate shaft speed sensor, ECM
P1760AT – pressure control shift solenoidWiring, shift solenoid, ECM
P1765AT – pressure control shift solenoidWiring, shift solenoid, ECM
P1770Differential Lock Solenoid Circuit Malfunction
P1780Park/neutral position (PNP) switch – circuit malfunctionWiring, PNP switch, ECM
P1781Shift Lever Switch Malfunction
P1782Transfer box low ratio switch – circuit malfunctionWiring, transfer box low ratio switch, ECM
P1783Transfer box neutral switch – circuit malfunctionWiring, transfer box neutral switch, ECM
P1790ST Solenoid Valve Circuit Malfunction
P1800 – P1899 (Transmission)
P1810CAN Data Bus Malfunction
P1815Shift control solenoid – malfunctionWiring, shift control solenoid, ECM
P1818Shift control solenoid – circuit malfunctionWiring, shift control solenoid, ECM
P3190Decreased engine performanceAir induction system, fuel pressure/level, mechanical fault, engine coolant temperature (ECT) sensor, camshaft/   crankshaft (CMP/CKP) sensor, variable valve   timing intake/exhaust sensor, ECM
P3191Engine does not startAir induction system, fuel pressure/level, mechanical fault, engine coolant temperature (ECT) sensor, camshaft/   crankshaft (CMP/CKP) sensor, variable valve timing intake/exhaust sensor, ECM
P3193Fuel tank emptyOut of fuel, ECM