OBDII Infiniti 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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Infiniti Codes
Trouble CodeFault LocationProbable Cause
P1000 – P1099 (Fuel and air metering and auxiliary emission control)
P1031Heated oxygen sensor (H02S), bank 1, heater – voltage lowWiring, H02S
P1032Heated oxygen sensor (H02S), bank 1, heater – voltage highWiring, H02S
P1051Heated oxygen sensor (H02S), bank 2, heater – voltage lowWiring, H02S
P1052Heated oxygen sensor (H02S), bank 2, heater – voltage highWiring, H02S
P1065Engine control module (ECM) – battery voltage supplyWiring, fuse, ECM
P1078Camshaft position (CMP) sensor, exhaust – low voltageWiring, CMP
P1084Camshaft position (CMP) sensor, exhaust – high voltageWiring, CMP
P1087VVEL Small Event Angle Malfunction Bank 1
P1088VVEL Small Event Angle Malfunction Bank 2
P1089VVEL Control Shaft Position Sensor Bank 1 Circuit
P1090VVEL Actuator Motor Bank 1
P1091VVEL Actuator Motor Relay Circuit
P1092VVEL Control Shaft Position Sensor Bank 2 Circuit
P1093VVEL Actuator Motor Bank 2
P1100 – P1199 (Fuel and air metering)
P1102Mass air flow (MAF) sensor – performance problemWiring, MAF sensor
P1103MAP Sensor High Voltage
P1104MAP Sensor Low Voltage
P1105MAP - BARO switching valve - circuit malfunctionWiring, MAP/BARO switching valve
P1110Intake valve timing control solenoid, bank 1 – malfunctionWiring, intake valve control solenoid position sensor, CKP sensor, CMP sensor, ECM
P1111Intake valve timing control solenoid, bank 1 – circuit malfunctionWiring, intake valve control solenoid, ECM
P1119Engine coolant temperature (ECT) sensor, radiator – circuit malfunctionWiring, engine coolant temperature   (ECT) sensor
P1120Throttle position (TP) circuit malfunctionWiring, TP sensor, ECM
P1121Throttle motor – malfunctionThrottle motor, ECM
P1122Throttle motor – circuit malfunctionWiring, throttle motor, ECM
P1123Throttle motor relay – circuit malfunctionWiring, throttle motor relay, ECM
P1124Throttle motor – short circuitWiring, throttle motor, throttle motor relay, ECM
P1125Throttle position (TP) sensor 1 & 2 - signal malfunctionWiring, TP sensor, mechanical fault, ECM
P1126Throttle motor – open circuitWiring, throttle motor, throttle motor relay, ECM
P1128Throttle motor – short circuitWiring, throttle motor, ECM
P1130Intake manifold air control solenoid – malfunctionWiring, control solenoid, intake system, hose leak/blockage, control vacuum check switch, ECM
P1131Intake manifold air control solenoid – malfunctionWiring, intake manifold air control solenoid
P1132Swirl Control Valve Circuit
P1135Intake valve timing control solenoid, bank 2 – malfunctionWiring, intake valve control solenoid position sensor, CKP sensor, CMP sensor, ECM
P1136Intake valve timing control solenoid, bank 2 – circuit malfunctionWiring, intake valve control solenoid, ECM
P1137Swirl Control Valve Control Position Sensor Circuit
P1138Swirl Control Valve Control System Performance
P1140Camshaft position (CMP) actuator LH – circuit malfunctionWiring, CMP actuator, mechanical fault, ECM
P1143Heated oxygen sensor (H02S) 1, bank 1 – voltage lowWiring, mixture, H02S, ECM
P1144Heated oxygen sensor (H02S) 1, bank 1 – voltage highH02S, fuel pressure, fuel system, ECM
P1145Camshaft position (CMP) actuator RH – circuit malfunctionWiring, CMP actuator, mechanical fault, ECM
P1146Heated oxygen sensor (H02S) 2, bank 1 – voltage lowWiring, mixture, H025, ECM
P1147Heated oxygen sensor (H02S) 2, bank 1 – voltage highWiring, H02S, fuel pressure, fuel system, ECM
P1148Closed loop control, bank 1 – inoperativeWiring, H02S front, ECM
P1163Heated oxygen sensor (H02S)Wiring, H025, ECM
P1164Heated oxygen sensor (H02S) 1, bank 2 – voltage highH02S, fuel pressure, fuel system, ECM
P1165Intake manifold air control system -vacuum check switch circuit malfunctionWiring, vacuum check switch, hose leak/   blockage, air control solenoid, ECM
P1166Heated oxygen sensor (H02S) 2, bank 2 – voltage highWiring, mixture, H025, ECM
P1167Heated oxygen sensor (H02S) 2, bank 2 – voltage highWiring, H02S, fuel pressure, fuel system, ECM
P1168Closed loop control LH – inoperativeWiring, H02S, fuel pressure, fuel system, mechanical fault, ECM
P1195Engine Does Not Start
P1196Poor Engine Power
P1197Low Input From Fuel Level Sensor
P1200 – P1299 (Fuel and air metering – injector circuit)
P1210Traction control system - malfunctionWiring, TP sensor, mechanical fault, ECM
P1211ABS/TCS control module – communication malfunctionWiring, ABS/TCS control module, ECM
P1212ABS/TCS control module – circuit malfunctionWiring, ABS/TCS control module, ECM
P1217Engine over temperatureCooling system, engine coolant blower motor
P1220Fuel pump control module – circuit malfunctionWiring, fuel pump speed resistor, fuel pump control module
P1223Throttle position (TP) sensor 2 -voltage lowWiring, TP sensor
P1224Throttle position (TP).sensor 2 – voltage highWiring, TP sensor
P1225Throttle motor position sensor – learning problem, voltage lowWiring, TP sensor 1, TP sensor 2
P1226Throttle motor position sensor – learning problemWiring, TP sensor 1, TP sensor 2
P1227Accelerator pedal position (APP) sensor 2 – voltage lowWiring, APP sensor
P1228Accelerator pedal position (APP) sensor 2 – voltage highWiring, APP sensor
P1229Engine control module (ECM) – sensor supply voltage low/highWiring, APP sensor, throttle motor position sensor, MAF sensor, fuel tank pressure sensor, TP sensor(s), refrigerant pressure sensor
P1233Electronic throttle control – performanceWiring, throttle control motor
P1234Throttle motor position sensor – learning problem, voltage low, bank 2Wiring, TP simsor 1, TP sensor 2
P1235Throttle motor position sensor – learning problem, bank 2Wiring, TP sensor 1, TP sensor 2
P1236Throttle control motor – short circuitWiring, throttle control motor
P1238Throttle control motor – malfunctionThrottle control motor
P1239Throttle position (TP) – performanceWiring, throttle actuator, TP sensor
P1271Heated oxygen sensor (H02S), bank 1 – voltage lowWiring, H02S
P1272Heated oxygen sensor (H02S), bank 1 – voltage highWiring, H02S
P1273Heated oxygen sensor (H02S), bank 1 – lean mixtureH02S, fuel pressure, injectors, intake air leak
P1274Heated oxygen sensor (H02S), bank 1 – rich mixtureH02S, fuel pressure, injectors
P1276Heated oxygen sensor (H02S), bank 1 – activityWiring, H025
P1277Air Fuel Ratio Sensor 1 Bank 1 Circuit Slow Response
P1278Heated oxygen sensor (H02S), bank 1 – slow responseWiring, fuel pressure, injectors, MAF sensor, PCV, H02S, intake air leaks, exhaust leaks
P1279Heated oxygen sensor (H02S), bank 1 – slow responseWiring, fuel pressure, injectors, MAF sensor, PCV, H025, intake air leaks, exhaust leaks
P1281Heated oxygen sensor (H02S), bank 2 – voltage lowWiring, H025
P1282Heated oxygen sensor (H02S), bank 2 – voltage highWiring, H025
P1283Heated oxygen sensor (H02S), bank 2 – lean mixtureH02S, fuel pressure, injectors, intake air leak
P1284Heated oxygen sensor (H02S), bank 2 – rich mixtureH02S, fuel pressure, injectors
P1286Heated oxygen sensor (H02S), bank 2 – activityWiring, H02S
P1288Heated oxygen sensor (H02S), bank 2 – slow responseWiring, fuel pressure, injectors, MAF sensor, PCV, H02S, intake air leaks, exhaust leaks
P1289Heated oxygen sensor (H02S), bank 2 – slow responseWiring, fuel pressure, injectors, MAF sensor, PCV, H02S, intake air leaks, exhaust leaks
P1290Throttle control motor relay – voltage lowWiring, relay
P1300 – P1399 (Ignition system or misfire)
P1320Ignition signal – circuit malfunctionWiring, ignition coil/module, ignition system, CKP sensor, CMP sensor, ECM
P1335Crankshaft position (CKP) sensor – circuit malfunctionWiring, CKP sensor, ECM
P1336Crankshaft position (CKP) sensor- signal malfunctionWiring, CKP sensor, ECM
P1400 – P1499 (Emission control)
P1400Exhaust gas recirculation (EGR) valve - voltage incorrectWiring, EGR valve, mechanical fault, ECM
P1401Exhaust gas recirculation temperature (EGRT)   sensor – circuit malfunctionWiring, EGRT sensor, ECM
P1402Exhaust gas recirculation (EGR) system – excessive flowWiring, EGRIEVAP valve, EGR valve, EGRT   sensor, EGR back pressure transducer, ECM
P1421Cold start emission control – malfunctionIntake/exhaust leak/blockage, mechanical fault, idle speed control (ISC) system, ignition control, engine coolant temperature (ECT) sensor, H025, ECM
P1440Evaporative emission (EVAP) canister purge control system – small leakEVAP valve, hoses, mechanical fault
P1441Evaporative emission (EVAP) canister purge control system – small leakEVAP valve, hoses, fuel filler cap, mechanical fault
P1442Evaporative emission (EVAP) canister purge system – small leakEVAP canister purge system, hose leak, EVAP pressure sensor/vent valve, fuel filler cap, ECM
P1443Evaporative emission (EVAP) canister purge control system - circuit malfunctionWiring, EVAP valve, ECM
P1444Evaporative emission (EVAP) canister purge control system – malfunctionWiring, EVAP valve, hoses, mechanical fault, ECM
P1445Evaporative emission (EVAP) canister purge control valve - circuit malfunctionWiring, EVAP valve, ECM
P1446Evaporative emission (EVAP) canister purge control valve – malfunctionWiring, EVAP valve, mechanical fault, ECM
P1447Evaporative emission (EVAP) canister purge control system – malfunctionWiring, EVAP valve, mechanical fault, ECM
P1448Evaporative emission (EVAP) canister purge control valve – malfunctionWiring, EVAP valve, ECM
P1456Evaporative emission (EVAP) canister purge system – very small leakEVAP canister purge system, hose leak, EVAP pressure sensor/vent valve, fuel filler cap, ECM
P1464Fuel gauge tank sensor- voltage highWiring, fuel gauge tank sensor, ECM
P1480Engine coolant blower motor control – circuit malfunctionWiring, blower motor speed control solenoid valve, ECM
P1490Evaporative emission (EVAP) canister purge control system – malfunctionWiring, EVAP valve, mechanical fault, ECM
P1491Evaporative emission (EVAP) canister purge control system – malfunctionWiring, EVAP valve, ECM
P1492Evaporative emission (EVAP) canister purge control valve - malfunctionWiring, EVAP solenoid, ECM
P1493Evaporative emission (EVAP) canister purge control valve - malfunctionWiring, EVAP valve, ECM
P1500 – P1599 (Vehicle or idle speed control)
P1550Battery condition sensor – malfunctionWiring, battery condition sensor
P1551Battery condition sensor – low voltageWiring, battery condition sensor
P1552Battery condition sensor – high voltageWiring, battery condition sensor
P1553Battery condition sensor – signal too highWiring, battery condition sensor
P1554Battery condition sensor – signal too lowWiring, battery condition sensor
P1564Cruise control master switch – circuit malfunctionWiring, cruise control master switch, ECM
P1568Cruise control master switch – signal out of specificationWiring, cruise control master switch, . ECM
P1572Cruise control brake pedal switch – circuit malfunctionWiring, cruise control brake pedal switch, clutch pedal position (CPP) switch, ECM
P1574Cruise control vehicle speed sensor – signal malfunctionWiring, cruise control vehicle speed sensor, ECM
P1600 – P1699 (ECM – computer output circuit)
P1605AT diagnosis communication -signal failureWiring, ECM
P1610Ignition key/engine control module (ECM) – malfunctionIncorrect ignition key, ECM
P1611Immobilizer control module/engine control module (ECM) – codingImmobilizer control module/ECM   incorrectly coded
P1612Immobilizer control module/engine control module (ECM) communication – malfunctionWiring, immobilizer control module, ECM
P1613Engine control module (ECM), immobilizer function – internal failureECM
P1614Immobilizer control module/module coding plug communication – no signalWiring, immobilizer control module, module coding plug
P1615Ignition key/immobilizer control module communication – malfunctionIncorrect ignition key, immobilizer control module
P1700 – P1799 (Transmission)
P1700CVT shift control – malfunctionTCM trouble code(s) stored
P1701Transmission Control Module Power Supply
P1702Transmission Control Module RAM
P1703Transmission Control Module ROM
P1704Transmission Control Module
P1705AT- throttle position (TP) sensor- voltage high or lowWiring, TP sensor, mechanical fault, ECM
P1706Park/neutral position (PNP) switch – circuit malfunctionWiring, PNP switch, ECM
P1710Automatic Transmission Fluid Temperature Sensor Circuit.
P1715Automatic transmission turbine shaft speed   (TSS) sensor- circuit malfunctionWiring, TSS sensor, TCM
P1716AT – turbine revolution sensor- circuit malfunctionWiring, turbine sensor 1, turbine sensor 2, ECM
P1720Vehicle speed sensor (VSS) – signal variationWiring, TCM – DTC’s stored, ABSfTCS control module – DTC’s stored, instrument panel
P1721Vehicle Speed Sensor MTR
P1722Estimated Vehicle Speed Signal
P1726Electric Throttle Control System
P1730AT- fail safe function -circuit malfunctionWiring, transmission clutches, transmission solenoid valves, transmission pressure switches
P1731A/T 1st Engine Brake
P1740CVT lock-up select solenoid valve – malfunctionWiring, lock-up select solenoid valve
P1752AT – input clutch – solenoid valve malfunctionWiring, input clutch solenoid valve
P1754AT- input clutch- solenoid valve malfunctionWiring, input clutch solenoid valve, transmission pressure switch 3
P1757AT- front brake- solenoid valve malfunctionWiring, front brake solenoid valve
P1759AT -front brake – solenoid valve malfunctionWiring, front brake solenoid valve, transmission pressure switch 1
P1760AT- overrun clutch solenoid – voltage lowWiring, solenoid, mechanical fault
P1762AT- direct clutch- solenoid valve malfunctionWiring, direct clutch solenoid valve
P1764AT- direct clutch – solenoid valve malfunctionWiring, direct clutch solenoid valve, transmission pressure switch 5
P1767AT- high/low reverse solenoid valve – malfunctionWiring, high/low reverse solenoid valve
P1769AT – high/low reverse solenoid valve – malfunctionWiring, high/low reverse solenoid valve, transmission pressure switch 6
P1772AT – low coast brake solenoid valve – malfunctionWiring, low coast brake solenoid valve
P1774AT – low coast brake solenoid valve – malfunctionWiring, low coast brake solenoid valve, transmission pressure switch 2
P1775Torque Converter Clutch Solenoid Valve
P1776Ignition Retard Request Duration Fault
P1777CVT step motor – circuit malfunctionWiring, step motor
P1778CVT step motor – mechanical malfunctionStep motor
P1780AT- shift change – signal malfunctionWiring, TCM, ECM
P1800 – P1899 (Transmission)
P1800Intake manifold air control solenoid – circuit malfunctionWiring, intake manifold air control solenoid
P1801Variable Intake Air System Control Solenoid Valve 2
P1805Brake pedal position (BPP) switch – circuit malfunctionWiring, BPP switch
P1807Vehicle Speed Sensor A/T
P1808Vehicle Speed Sensor ABS
P18104 LO Switch
P18134WD Shift Switch
P1814Wait Detection Switch
P1815Manual Mode Switch
P1816Park/Neutral Position Switch
P1817Actuator Motor
P1818Actuator Position Switch
P1819Transfer Control Device
P1820Engine Speed Signal
P1841Automatic Transmission Fluid Pressure Switch 1
P1843Automatic Transmission Fluid Pressure Switch 3
P1845Automatic Transmission Fluid Pressure Switch 5
P1846Automatic Transmission Fluid Pressure Switch 6
P1900 – P1999 (Transmission)
P1900Engine coolant blower motor - circuitWiring, blower motor, ECM
U1000 – U2000 (Manufacturer defined, common defination listed)
U1000CAN communication line – signal malfunctionWiring
U1001CAN communication line – signal malfunctionWiring
U1010CAN communication line – initialization malfunctionWiring, ECM