OBDII Acura 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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| Acura Codes | ||
|---|---|---|
| Trouble Code | Fault Location | Probable Cause | P1000 – P1099 (Fuel and air metering and auxiliary emission control) |
| P1009 | Variable Valve Timing Control Advance Malfunction | Wiring, valve timing, engine mechanical fault, CMP actuator, ECM |
| P1020 | Valve Pause System Stuck Off | |
| P1021 | Valve Pause System Stuck On | |
| P1024 | Valve Pause System Sticking On | |
| P1077 | Intake Manifold Runner Control System Malfunction Low RPM | Wiring, intake manifold air control solenoid, ECM programming, ECM |
| P1078 | Intake Manifold Runner Control System Malfunction High RPM | Wiring, intake manifold air control solenoid, ECM programming, ECM | P1100 – P1199 (Fuel and air metering) |
| P1102 | Mass air flow (MAF) sensor - signal higher than expected | MAF sensor |
| P1103 | Mass air flow (MAF) sensor - signal higher than expected | MAF sensor |
| P1106 | Barometric Pressure Sensor Range/Performance Problem | ECM |
| P1107 | Barometric Pressure Sensor Circuit Low Voltage | Wiring, TCM, ECM |
| P1108 | Barometric Pressure Sensor Circuit High Voltage | ECM |
| P1109 | BARO Sensor Circuit Out of Range High | BARO sensor, ECM programming, ECM |
| P1111 | Intake air temperature (IAT) sensor - circuit/ intermittent voltage high | Wiring, IAT sensor |
| P1112 | Intake air temperature (IAT) sensor - circuit/ intermittent voltage low | Wiring, IAT sensor |
| P1114 | Engine coolant temperature (ECT) sensor - circuit/ intermittent voltage low | Wiring, ECT sensor |
| P1115 | Engine coolant temperature (ECT) sensor - circuit/ intermittent voltage high | Wiring, ECT sensor |
| P1116 | Engine Coolant Temperature Sensor Performance Problem | Wiring, ECT sensor, ECM programming, ECM |
| P1121 | Throttle position (TP) sensor - circuit/ intermittent voltage high | Wiring, TP sensor |
| P1122 | Throttle position (TP) sensor - circuit/ intermittent voltage low | Wiring, TP sensor |
| P1128 | Manifold absolute pressure (MAP) sensor - pressure lower than expected | MAP sensor |
| P1129 | Manifold absolute pressure (MAP) sensor - pressure higher than expected | MAP sensor |
| P1131 | Brake system vacuum sensor – signal malfunction | Wiring, other trouble codes stored, brake system vacuum sensor, brake servo vacuum pump, ECM programming, ECM |
| P1133 | Heated oxygen sensor (HO2S) - RH front - insufficient switching | Exhaust system, wiring, HO2S, ECM |
| P1134 | Heated oxygen sensor (HO2S) - RH front - slow operation | Exhaust system, wiring, HO2S, ECM |
| P1149 | Air/Fuel Ratio Sensor 1 Circuit Range/Performance | |
| P1153 | Heated oxygen sensor (HO2S) - LH front - insufficient switching | Exhaust system, wiring, HO2S, ECM |
| P1154 | Heated oxygen sensor (HO2S) - LH front - slow operation | Exhaust system, wiring, HO2S, ECM |
| P1157 | Air/Fuel Ratio Sensor 1 Range/Performance Problem | Wiring, H02S, ECM programming, ECM |
| P1158 | Air/Fuel Ratio Sensor 1 Terminal Low Voltage | |
| P1159 | Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage | |
| P1162 | Air fuel (A/F) sensor - RSX 1 - circuit malfunction | Wiring, A/F sensor, ECM |
| P1163 | Air fuel (A/F) sensor - RSX 1 - slow response | A/F sensor |
| P1164 | Air fuel (A/F) sensor - RSX 1 - range/ performance problem | Wiring, A/F sensor, ECM |
| P1165 | Air/Fuel Ratio Sensor 1 Circuit Range/Performance | |
| P1166 | Air fuel (A/F) sensor - RSX 1 - heater circuit malfunction | Wiring, A/F sensor, ECM |
| P1167 | Air fuel (A/F) sensor - RSX 1 - heater system malfunction | Wiring, A/F sensor, ECM |
| P1168 | Air/Fuel Ratio Sensor Label Low Voltage | |
| P1169 | Air/Fuel Ratio Sensor 1 LABEL High Voltage | |
| P1171 | Fuel system - mixture lean under acceleration | Fuel pump/strainer, incorrect fuel |
| P1172 | Rear A/F Sensor Bank 1 Sensor 1 Circuit Out Of Range High | Wiring, H02S, ECM programming, ECM |
| P1174 | AF Sensor 21 Circuit Out Of Range High | Wiring, H02S, ECM programming, ECM |
| P1187 | Fuel Tank Temperature Sensor Circuit Low Voltage | |
| P1188 | Fuel Tank Temperature Sensor Circuit High Voltage | |
| P1192 | Fuel Tank Pressure Sensor Circuit Low Voltage | |
| P1193 | Fuel Tank Pressure Sensor Circuit High Voltage | P1200 – P1299 (Fuel and air metering – injector circuit) |
| P1201 | Cylinder No. 1 - misfire | Wiring, injector, ignition system, mechanical fault |
| P1202 | Cylinder No. 2 - misfire | Wiring, injector, ignition system, mechanical fault |
| P1203 | Cylinder No. 3 - misfire | Wiring, injector, ignition system, mechanical fault |
| P1204 | Cylinder No. 4 - misfire | Wiring, injector, ignition system, mechanical fault |
| P1205 | Cylinder No. 5 - misfire | Wiring, injector, ignition system, mechanical fault |
| P1206 | Cylinder No. 6 - misfire | Wiring, injector, ignition system, mechanical fault |
| P1233 | Turbocharger (TC) boost pressure sensor/barometric pressure (BARO) sensor- signal correlation | Wiring, TC boost pressure sensor, BARO sensor, ECM programming, ECM |
| P1234 | Turbocharger (TC) boost pressure sensor/manifold absolute pressure (MAP) sensor – signal correlation | Wiring, TC boost pressure sensor, MAP sensor, ECM programming, ECM |
| P1241 | Throttle actuator control (TAC) motor - circuit 1 - malfunction | Wiring, TAC motor, ECM |
| P1242 | Throttle actuator control (TAC) motor - circuit 2 - malfunction | Wiring, TAC motor, ECM |
| P1243 | Throttle position (TP) - insufficient | Throttle valve, TP sensor, TAC motor |
| P1244 | Closed throttle position (CTP) - insufficient | Throttle valve, TP sensor |
| P1246 | Accelerator pedal position (APP) sensor 1 - circuit malfunction | Wiring, APP sensor, ECM |
| P1247 | Accelerator pedal position (APP) sensor 2 - circuit malfunction | Wiring, APP sensor, ECM |
| P1248 | Accelerator pedal position (APP) sensor 1 & 2 - incorrect signals | APP sensor |
| P1253 | VTEC system malfunction | Wiring, VTEC solenoid, ECM |
| P1257 | VTEC System Malfunction | |
| P1258 | VTEC System Malfunction | |
| P1259 | Camshaft position (CMP) actuator - circuit malfunction | Wiring, CMP actuator, ECM |
| P1271 | Accelerator Pedal Position Sensor 1-2 Correlation | |
| P1272 | Accelerator Pedal Position Sensor 2-3 Correlation | |
| P1273 | Accelerator Pedal Position Sensor 1-3 Correlation | |
| P1275 | Accelerator Pedal Position Sensor 1 Circuit | |
| P1279 | VTEC control system malfunction - front bank | Wiring, VTEC solenoid/pressure switch, ECM |
| P1280 | Accelerator Pedal Position (APP) Sensor 2 Circuit Malfunction | |
| P1286 | Engine Oil Pressure Sensor Stuck Low | |
| P1287 | Rocker Arm Oil Pressure Switch Circuit High Voltage | |
| P1288 | Rocker Arm Oil Pressure Switch Circuit Low Voltage | |
| P1289 | Engine Oil Pressure Sensor Stuck High | |
| P1295 | Electronic Throttle Control Power Management Mode | |
| P1297 | Electrical load control module - voltage low | Wiring, electrical load control module |
| P1298 | Electrical load control module - voltage high | Wiring, electrical load control module |
| P1299 | Electronic Throttle Control Forced Engine Shut Down Mode | P1300 – P1399 (Ignition system or misfire) |
| P1300 | Random misfire | EGR/fuel/ignition system, MAP sensor |
| P1301 | Cylinder No. 1 - misfire | Ignition system |
| P1302 | Cylinder No. 2 - misfire | Ignition system |
| P1303 | Cylinder No. 3 - misfire | Ignition system |
| P1304 | Cylinder No. 4 - misfire | Ignition system |
| P1305 | Cylinder No. 5 - misfire | Ignition system |
| P1306 | Cylinder No. 6 - misfire | Ignition system |
| P1316 | Spark plug voltage detection - LH bank - circuit malfunction | Wiring, voltage detection module, ECM |
| P1317 | Spark plug voltage detection - RH bank - circuit malfunction | Wiring, voltage detection module, ECM |
| P1318 | Spark plug voltage detection module reset - LH bank - reset circuit malfunction | Wiring, voltage detection module, ECM |
| P1319 | Spark plug voltage detection module reset - RH bank - reset circuit malfunction | Wiring, voltage detection module, ECM |
| P1324 | Knock Sensor Power Source Circuit Low Voltage | |
| P1326 | Ignition Control Module Combustion Quality Input Signal | |
| P1336 | Crankshaft position (CKP) range/performance problem | CKP sensor, valve timing |
| P1337 | Crankshaft position (CKP) circuit malfunction | Wiring, CKP sensor, ECM |
| P1359 | Crankshaft position (CKP) sensor - connector disconnection | Wiring |
| P1361 | Camshaft position (CMP) intermittent | Wiring, CMP sensor |
| P1362 | Camshaft position (CMP) no signal | Wiring, CMP sensor |
| P1366 | Camshaft position (CMP) intermittent | Wiring, CMP sensor |
| P1367 | Camshaft position (CMP) no signal | Wiring, CMP sensor |
| P1381 | Camshaft position (CMP) range/ performance problem | CMP sensor |
| P1382 | Camshaft position (CMP) malfunction | Wiring, CMP sensor, ECM |
| P1386 | Camshaft position (CMP) range/ performance problem | CMP sensor |
| P1387 | Camshaft position (CMP) malfunction | Wiring, CMP sensor, ECM |
| P1390 | G-sensor - intermittent voltage low | Wiring, G-sensor |
| P1391 | G-sensor - performance problem | Seal damaged/missing, incorrectly installed, wiring, G-sensor, ECM |
| P1392 | G-sensor - voltage low | Wiring, G-sensor, ECM |
| P1393 | G-sensor - voltage high | Wiring, G-sensor, ECM |
| P1394 | G-sensor - intermittent voltage high | Wiring, G-sensor |
| P1399 | Random misfire | Fuel/ignition system, MAP sensor, IAC valve | P1400 – P1499 (Emission control) |
| P1404 | EGR Valve Stuck Closed | |
| P1406 | Exhaust gas recirculation (EGR) valve position sensor - circuit problem | Wiring, EGR valve/position sensor, ECM |
| P1410 | Secondary air injection (AIR) system - malfunction | AIR pump |
| P1413 | Secondary Air Injection System Control Solenoid Circuit High Voltage | |
| P1415 | AIR pump electrical current sensor - open/ short circuit | Wiring, AIR pump electrical current sensor, ECM |
| P1416 | AIR pump electrical current sensor - open circuit | Wiring, AIR pump electrical current sensor, ECM |
| P1420 | NOx Adsorptive Catalyst System Efficiency Below Threshold | |
| P1441 | Evaporative emission (EVAP) canister purge system - flow detected | Wiring, EVAP solenoid, vacuum switch, ECM |
| P1442 | Evaporative emission (EVAP) canister purge system - vacuum switch malfunction | Wiring, vacuum switch, ECM |
| P1450 | Two Way Valve Bypass Valve Control Circuit Low Voltage | |
| P1451 | Two Way Valve Bypass Valve Control Circuit High Voltage | |
| P1454 | Fuel Tank Pressure Sensor Range/Performance Problem | Wiring, hose, fuel tank pressure sensor, fuel filler cap, EVAP canister/vent valve, ECM programming, ECM |
| P1456 | Evaporative emission (EVAP) canister purge system (fuel tank system) - leak detected | Hose leak/blockage, fuel tank/pressure sensor, EVAP valve/bypass solenoid, EVAP two way valve, EVAP canister/ vent valve |
| P1457 | Evaporative emission (EVAP) canister purge system (canister system) - leak detected | Hose leak/blockage, fuel tank/ pressure sensor, EVAP valve/bypass solenoid, EVAP two way valve, EVAP canister/ vent valve |
| P1459 | Evaporative emission (EVAP) canister purge system - switch malfunction | Wiring, flow switch, hose leak/blockage, ECM |
| P145A | Evaporative emission (EVAP) canister purge system – incorrect flow | Wiring, hose leak/blockage, EVAP canister purge valve, non-return valve B, ECM programming, ECM |
| P145B | Evaporative emission (EVAP) canister purge system – non-return valve stuck open | Non-return valve A |
| P145C | Evaporative emission (EVAP) canister purge system – incorrect flow | Wiring, hose leak/blockage, EVAP canister purge valve, mechanical fault, ECM programming, ECM |
| P145D | Evaporative emission (EVAP) canister purge system – incorrect flow | Wiring, hose leak/blockage, EVAP canister purge valve, non-return valve B, ECM programming, ECM |
| P1460 | Fuel Level Sensor Power Supply Circuit | |
| P1486 | Thermostat - range/performance problem | Engine coolant blower motor, cooling system |
| P1491 | Exhaust gas recirculation (EGR) system - valve lift insufficient | Wiring, EGR valve/position sensor, EGR solenoid, hose leak/blockage, ECM |
| P1498 | Exhaust gas recirculation (EGR) valve position sensor - voltage high | Wiring, EGR valve/lift sensor, ECM | P1500 – P1599 (Vehicle or idle speed control) |
| P1505 | Positive Crankcase Ventilation Air Leakage | |
| P1508 | Idle air control (IAC) system - low RPM | Intake system, throttle body, hose leak, wiring, IAC valve, ECM |
| P1509 | Idle air control (IAC) system - high RPM | Hose leak, throttle body, crankcase vent valve, wiring, IAC valve, ECM |
| P1514 | Throttle Position Sensor / Mass Air Flow Sensor Signal Variation | |
| P1516 | Throttle Actuator Control Position Performance | |
| P1519 | Idle air control (IAC) valve - circuit failure | Wiring, IAC valve, ECM |
| P1522 | Brake Booster Pressure Sensor Circuit Low Voltage | |
| P1523 | Brake Booster Pressure Sensor Circuit High Voltage | |
| P1541 | Passenger Compartment Heater Standby Signal Circuit Low Input | |
| P1549 | Charging System High Voltage | Wiring, generator, ECM programming, ECM |
| P1571 | Brake Switch Circuit Malfunction | |
| P1589 | Brake booster pressure sensor – signal malfunction | Wiring, vacuum pipes blocked/leaking, air leaks, brake booster pressure sensor, intake manifold check valve, ECM programming, ECM |
| P15BA | Brake booster pressure sensor – no vacuum | |
| P15BB | Brake booster pressure sensor -leak detected | Vacuum pipes blocked/leaking, brake booster vacuum pump, brake booster pressure sensor, brake booster, brake pedal position (BPP) switch |
| P15BC | Brake booster vacuum pump – stuck ON | Wiring, brake booster pressure sensor, vacuum pipes leaking, brake booster vacuum pump, intake manifold check valve | P1600 – P1699 (ECM – computer output circuit) |
| P1607 | Engine control module (ECM) - internal circuit failure | ECM |
| P1608 | Engine control module (ECM) - internal circuit failure B | ECM |
| P1618 | Engine control module (ECM) - internal fault | ECM |
| P1625 | Engine Control Module Unexpected Reset | |
| P1640 | Engine control module (ECM) - internal fault | Wiring, ECM |
| P1646 | Sensor Supply Voltage Circuit 'C' Malfunction | |
| P1650 | Engine Control Module Quad Driver / Output Driver | |
| P1655 | AT - signal failure | Communication wire, ECM |
| P1656 | Electronic stability programme (ESP) control module - communication malfunction | Wiring, ESP control module |
| P1658 | Electronic Throttle Control System Control Relay ON Malfunction | Wiring, ETS relay, ECM programming, ECM |
| P1659 | Electronic Throttle Control System Control Relay OFF Malfunction | Wiring, ETS relay, ECM programming, ECM |
| P1660 | AT to ECM - signal failure | Wiring, TCM, ECM |
| P1671 | AT to ECM signal - no signal | Wiring, TCM, ECM |
| P1672 | AT to ECM signal - signal failure | Wiring, TCM, ECM |
| P1676 | ABS/TCS control module - communication malfunction | Wiring, ABS/TCS control module, ECM |
| P1677 | ECM to traction control system signal - signal failure | Wiring, traction control module, ECM |
| P1678 | ABS/TCS control module - communication malfunction | Wiring, ABS/TCS control module, ECM |
| P1681 | AT to ECM - signal A - input low | Wiring, TCM, ECM |
| P1682 | AT to ECM - signal A - input high | Wiring, TCM, ECM |
| P1683 | Throttle Valve Default Position Spring Performance Problem | Wiring, throttle sticking/mechanically damaged, throttle motor |
| P1684 | Throttle Valve Return Spring Performance Problem | Wiring, throttle sticking/mechanically damaged, throttle motor |
| P1686 | AT to ECM - signal B - input low | Wiring, TCM, ECM |
| P1687 | AT to ECM - signal B - input high | Wiring, TCM, ECM |
| P1690 | Traction control system - circuit failure | Wiring, traction control module, ECM |
| P1696 | Traction control system - voltage low | Wiring, traction control module, ECM |
| P1697 | Traction control system - voltage high | Wiring, traction control module, ECM |
| P16BB | Generator system – low voltage | Wiring, generator, ECM programming, ECM |
| P16BC | Generator system – low voltage | Wiring, generator, ECM programming, ECM |
| P16BD | Starter motor relay 2 – malfunction | Wiring, starter motor relay, ECM programming, ECM |
| P16BE | Starter motor relay 1 – malfunction | Wiring, starter motor relay, ECM programming, ECM |
| P16BF | Starter motor relays 1/2- circuit malfunction | Wiring, ECM programming, ECM |
| P16C0 | Engine control module (ECM) – malfunction | ECM programming, ECM |
| P16D9 | Engine control module (ECM) – internal circuit failure | ECM programming, ECM |
| P16DA | Brake booster vacuum pump relay 1 – stuck OFF | Wiring, brake booster vacuum pump relay, ECM programming, ECM |
| P16DB | Brake booster vacuum pump relay 1/2- circuit malfunction | Wiring, brake booster vacuum pump relay, ECM programming, ECM |
| P16DC | Brake booster vacuum pump relay 2 – stuck ON | Wiring, brake booster vacuum pump relay, ECM programming, ECM |
| P16DD | Brake booster vacuum pump relay 1 – stuck ON | Wiring, brake booster vacuum pump relay, ECM programming, ECM | P1700 – P1799 (Transmission) |
| P1705 | AT - gear shift malfunction | Wiring, range position switch, ECM |
| P1706 | AT - gear shift malfunction | Wiring, range position switch, ECM |
| P1709 | AT - range position switch | Wiring, range position switch, ECM |
| P1710 | AT - 1st gear hold switch | Wiring, range position switch, ECM |
| P1717 | Transmission Range Switch Switch Circuit Open | Wiring, transmission shift link adjustment, TR switch, ECM programming, ECM |
| P1730 | Problem In Shift Control System | Transmission fluid, mechanical fault, wiring, shift solenoid A/B/0, ECM programming, ECM |
| P1731 | Problem In Shift Control System | Transmission fluid, mechanical fault, wiring, shift solenoid E, AT clutch pressure control solenoid A, ECM programming, ECM |
| P1732 | Problem In Shift Control System | Transmission fluid, mechanical fault, wiring, shift solenoid B/C, ECM programming, ECM |
| P1733 | Problem In Shift Control System | Transmission fluid, mechanical fault, wiring, shift solenoid 0, AT clutch pressure control solenoid C, ECM programming, ECM |
| P1734 | Problem In Shift Control System | Transmission fluid, mechanical fault, wiring, shift solenoid B/C, ECM programming, ECM |
| P1738 | Automatic transmission | Wiring, clutch pressure switch 2, ECM |
| P1739 | AT - 3rd clutch pressure switch | Wiring, range position switch, ECM |
| P1740 | AT - 4th clutch pressure switch | Wiring, range position switch, ECM |
| P1743 | AT – gear shift malfunction | Transmission fluid, wiring, shift solenoid E, mechanical fault, ECM programming, ECM |
| P1744 | AT – gear shift malfunction | Transmission fluid, wiring, shift solenoid E, mechanical fault, ECM programming, ECM |
| P1745 | AT – gear shift malfunction | Transmission fluid, mechanical fault |
| P1750 | AT - hydraulic system mechanical malfunction | Wiring, range position switch, ECM |
| P1751 | AT - hydraulic system mechanical malfunction | Wiring, range position switch, ECM |
| P1753 | AT - lock-up clutch not engaging/ disengaging | Wiring, lock-up control solenoid A, ECM |
| P1758 | AT - lock-up clutch not engaging | Wiring, lock-up control solenoid B, TCM |
| P1768 | AT - lock-up clutch not engaging | Wiring, linear solenoid, TCM |
| P1773 | AT - lock-up clutch not engaging | Wiring, clutch pressure control solenoid B, ECM |
| P1778 | Shift solenoid (SS) C | Wiring, shift solenoid, ECM |
| P1780 | AT – gear shift malfunction | Other AT trouble codes stored, ECM programming, ECM |
| P1786 | AT - poor gear shift | Communication wire, ECM, TCM |
| P1787 | AT - lock-up clutch malfunction | Communication wire, TCM |
| P1788 | AT - poor gear shift | Communication wire, ECM, TCM |
| P1790 | AT - engine control module (ECM) | ECM/Programming |
| P1791 | AT - lock-up clutch not engaging | Wiring, VSS, ECM |
| P1792 | AT - engine control module (ECM) | ECM/Programming |
| P1793 | Automatic transmission | Wiring, MAP sensor, TCM |
| P1794 | Automatic transmission - BARO signal | Wiring, ECM, TCM |
| P1795 | Automatic transmission | Wiring, APP sensor, TCM | P1800 – P1899 (Transmission) |
| P1835 | AT - kick-down switch always ON | Wiring, kick-down switch, ECM |
| P1850 | AT - brake band solenoid | Wiring, brake band solenoid, ECM |
| P1860 | AT - torque converter clutch (TCC) solenoid | Wiring, TCC solenoid, ECM |
| P1870 | Transmission slip | Range switch, mechanical failure, engine speed signal incorrect |
| P1879 | Problem in CVT Start Clutch Pressure Control Valve Assembly Circuit | |