Encountering a check engine light in your Honda Civic can be unsettling. It’s your car’s way of signaling that something isn’t quite right under the hood. Thankfully, modern vehicles like the Honda Civic are equipped with an On-Board Diagnostics system, specifically OBD2, which helps pinpoint potential problems. This system generates codes that can be accessed with a simple OBD2 scanner, offering valuable insights into your vehicle’s health. Understanding these Obd2 Civic Codes is the first step towards diagnosing and resolving car issues, saving you time and potentially costly repairs.
This comprehensive guide dives deep into the world of obd2 civic codes, providing you with an extensive list of codes relevant to your Honda Civic. Whether you’re a seasoned DIY mechanic or a Civic owner simply wanting to understand your car better, this resource will help you decipher those cryptic codes and take informed action. We’ll break down common obd2 civic codes, explain what they mean, and what potential issues they might indicate.
Understanding OBD2 Systems and Your Honda Civic
The OBD2 (On-Board Diagnostics II) system is standardized across most vehicles sold in the United States since 1996, including the Honda Civic. Its primary function is to monitor various systems within your car, from the engine and transmission to emissions control. When the system detects a problem outside of normal parameters, it illuminates the check engine light and stores a Diagnostic Trouble Code (DTC). These DTCs are what we refer to as obd2 civic codes.
Retrieving these obd2 civic codes is straightforward. You’ll need an OBD2 scanner, which is readily available online or at auto parts stores. Simply plug the scanner into the OBD2 port, usually located under the dashboard on the driver’s side, and follow the scanner’s instructions to read the codes.
Comprehensive List of OBD2 Civic Codes
Below is an extensive list of obd2 civic codes that may appear when you scan your Honda Civic. This list is based on Honda service bulletins and common fault codes, providing a detailed reference for diagnosis. Please note that this list is for informational purposes and professional diagnosis is always recommended for accurate repair.
P0000-P0099: Fuel and Air Metering and Auxiliary Emission Controls
- P0010: Variable Valve Timing Control (VTC) Oil Control Solenoid Valve Malfunction
- P0011: Variable Valve Timing Control (VTC) System Malfunction
P0100-P0199: Fuel and Air Metering
- P0101: Mass Airflow (MAF) Sensor Range/Performance Problem
- P0102: Mass Airflow (MAF) Sensor Circuit Low Voltage
- P0103: Mass Airflow (MAF) Sensor Circuit High Voltage
- P0106: Manifold Absolute Pressure (MAP) Sensor Range/Performance Problem
- P0107: Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
- P0108: Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
- P0111: Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
- P0112: Intake Air Temperature (IAT) Sensor Circuit Low Voltage
- P0113: Intake Air Temperature (IAT) Sensor Circuit High Voltage
- P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem
- P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Input
- P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Input
- P0122: Throttle Position (TP) Sensor Circuit Low Input
- P0123: Throttle Position (TP) Sensor Circuit High Input
- P0125: Engine Coolant Temperature (ECT) Sensor Slow Response
- P0128: Cooling System Malfunction
- P0131: Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low Voltage
- P0132: Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit High Voltage
- P0133: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Slow Response
- P0134: Air/Fuel Ratio (A/F) Sensor (Sensor 1) No Activity Detected
- P0135: Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Heater Circuit Malfunction
- P0137: Secondary Heated Oxygen Sensor (Secondary HO2S) Circuit Low Voltage
- P0138: Secondary Heated Oxygen Sensor (Secondary HO2S) Circuit High Voltage
- P0139: Secondary Heated Oxygen Sensor (Secondary HO2S) Slow Response
- P0141: Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) Heater Circuit Malfunction
- P0143: Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Circuit Low Voltage
- P0144: Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Circuit High Voltage
- P0145: Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Circuit Slow Response
- P0147: Third Heated Oxygen Sensor (Third HO2S) (Sensor 3) Heater Circuit Malfunction
- P0153: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Circuit Slow Response
- P0154: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater System Malfunction
- P0155: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction
- P0157: Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Circuit Low Voltage
- P0158: Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Circuit High Voltage
- P0159: Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Circuit Slow Response
- P0161: Front Secondary Heated Oxygen Sensor (Secondary HO2S) (Bank 2, Sensor 2) Heater Circuit Malfunction
- P0171: Fuel System Too Lean
- P0172: Fuel System Too Rich
- P0174: Front Bank (Bank 2) Fuel System Too Lean
- P0175: Front Bank (Bank 2) Fuel System Too Rich
- P0191: Fuel Pressure Sensor Range/Performance Problem
- P0192: Fuel Pressure Sensor Circuit Low Voltage
- P0193: Fuel Pressure Sensor Circuit High Voltage
- P0196: EOT Sensor/Range Performance Problem
- P0197: EOT Sensor Circuit Low Voltage
- P0198: EOT Sensor Circuit High Voltage
P0200-P0299: Fuel and Air Metering – Injector Circuit
- P0222: Throttle Position (TP) Sensor 2 Circuit Low Voltage
- P0223: Throttle Position (TP) Sensor 2 Circuit High Voltage
P0300-P0399: Ignition System or Misfire
- P0300: Random Misfire
- P0301: No. 1 Cylinder Misfire
- P0302: No. 2 Cylinder Misfire
- P0303: No. 3 Cylinder Misfire
- P0304: No. 4 Cylinder Misfire
- P0305: No. 5 Cylinder Misfire
- P0306: No. 6 Cylinder Misfire
- P0325: Knock Sensor Circuit Malfunction
- P0335: Crankshaft Position (CKP) Sensor Circuit No Signal
- P0336 P0339: Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption
- P0340: Camshaft Position (CMP) Sensor No Signal
- P0341: Camshaft Position (CMP) Sensor A Intermittent Interruption
- P0341: Variable Valve Timing Control (VTC) Phase Gap
- P0344: Camshaft Position (CMP) Sensor Intermittent Interruption
- P0365: Camshaft Position (CMP) Sensor B No Signal
- P0366 P0369: Camshaft Position (CMP) Sensor B Intermittent Interruption
- P0385: Crankshaft Position (CKP) Sensor B No Signal
- P0389: Crankshaft Position (CKP) Sensor B Intermittent Interruption
P0400-P0499: Auxiliary Emission Controls
- P0401: Exhaust Gas Recirculation (EGR) Insufficient Flow
- P0404: Exhaust Gas Recirculation (EGR) Control Circuit Range/Performance Problem
- P0406: Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage
- P0410: Air Pump Circuit Malfunction
- P0411: Secondary Air Injection System Incorrect Flow
- P0420: Catalyst System Efficiency Below Threshold
- P0430: Front Bank Catalyst System Efficiency Below Threshold (Bank 2)
- P0441: Evaporative Emission (EVAP) Control System Incorrect Purge Flow
- P0442: Evaporative Emission (EVAP) System Small Leak Detected
- P0443: Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction
- P0451: Fuel Tank Pressure (FTP) Sensor Range/Performance Problem
- P0452: Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage
- P0453: Fuel Tank Pressure (FTP) Sensor Circuit High Voltage
- P0456: Evaporative Emission (EVAP) System Very Small Leak Detected
- P0457: Evaporative Emission (EVAP) System Leak Detected Fuel Fill Cap Loose/Off
- P0461: Fuel Gauge Sending Unit Range/Performance Problem
- P0462: Fuel Gauge Sending Unit Circuit Low Voltage
- P0463: Fuel Gauge Sending Unit Circuit High Voltage
- P0496: Evaporative Emission (EVAP) System High Purge Flow
- P0497: Evaporative Emission (EVAP) System Low Purge Flow
- P0498: Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit Low Voltage
- P0499: Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit High Voltage
P0500-P0599: Vehicle Speed Controls and Idle Control System
- P0500: Vehicle Speed Sensor (VSS) Circuit Malfunction
- P0501: Vehicle Speed Sensor (VSS) Range/Peformance Problem
- P0505: Idle Control System Malfunction
- P0506: Idle Control System RPM Lower Than Expected
- P0507: Idle Control System RPM Higher Than Expected
- P0511: Idle Air Control (IAC) Valve Circuit Malfunction
- P0521: EOP Sensor Range/Performance Problem
- P0522: EOP Sensor Circuit Low Voltage
- P0523: EOP Sensor Circuit High Voltage
P0600-P0699: Computer Output Circuit
- P0560: ECM Back-up Circuit Low Voltage
- P0563: Engine Control Module (ECM)/Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage
- P0600: Multiplex Control System Troubleshooting
- P0603: ECM/PCM Internal Control Module Keep Alive Memory (KAM) Error
- P0606: ECM/PCM Processor Malfunction
- P0661: Intake Manifold Runner Control (IMRC) Valve Position Sensor Circuit Low Voltage
- P0662: Intake Manifold Runner Control (IMRC) Valve Position Sensor Circuit High Voltage
- P0685: ECM/PCM Power Relay Control Circuit Malfunction
P0700-P0899: Transmission
- P0700: Automatic Transmission Control System
- P0705: Short in Transmission Range Switch Circuit (Multiple Shift-position Input)
- P0706: Open in Transmission Range Switch Circuit
- P0710 P0711: Problem in ATF Temperature Sensor Circuit
- P0712: Short in ATF Temperature Sensor Circuit
- P0713: Open in ATF Temperature Sensor Circuit
- P0715 P0716: Problem in Mainshaft Speed Sensor Circuit
- P0717: Problem in Mainshaft Speed Sensor Circuit (No Signal Input)
- P0718: Mainshaft Speed Sensor Intermittent Failure
- P0720: Countershaft Speed Sensor Circuit Malfunction
- P0720 P0721: Problem in Countershaft Speed Sensor Circuit
- P0722: Problem in Countershaft Speed Sensor Circuit (No Signal Input)
- P0723: Countershaft Speed Sensor Intermittent Failure
- P0725: Engine Speed Input Circuit Malfunction
- P0730: Problem in Shift Control System
- P0731: Problem in 1st Clutch and 1st Clutch Hydraulic Circuit
- P0732: Problem in 2nd Clutch and 2nd Clutch Hydraulic Circuit
- P0733: Problem in 3rd Clutch and 3rd Clutch Hydraulic Circuit
- P0734: Problem in 4th Clutch and 4th Clutch Hydraulic Clutch
- P0735: Problem in 5th Clutch and 5th Clutch Hydraulic Circuit
- P0740: Problem in Lock-up Control System
- P0741: Torque Converter Clutch Hydraulic Clutch Stuck OFF
- P0743: Problem in Torque Converter Clutch Solenoid Valve Circuit
- P0745: Problem in Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve A Circuit
- P0746: A/T Clutch Pressure Control Solenoid Valve A Stuck OFF
- P0747: A/T Clutch Pressure Control Solenoid Valve A Stuck ON
- P0748: Problem in A/T Clutch Pressure Control Solenoid Valve A Circuit
- P0750: Problem in Hydraulic Control System of Shift Solenoid Valve A Circuit
- P0751: Shift Solenoid Valve A Stuck OFF
- P0752: Shift Solenoid Valve A Stuck ON
- P0753: Problem in Shift Solenoid Valve A Circuit
- P0756: Shift Solenoid Valve B Stuck OFF
- P0757: Shift Solenoid Valve B Stuck ON
- P0758: Problem in Shift Solenoid Valve B Circuit
- P0761: Shift Solenoid Valve C Stuck OFF
- P0762: Shift Solenoid Valve C Stuck ON
- P0763: Problem in Shift Solenoid Valve C Circuit
- P0771: Shift Solenoid Valve E Stuck OFF
- P0773: Problem in Shift Solenoid Valve E Circuit
- P0775: Problem in the Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve B Circuit
- P0776: A/T Clutch Pressure Control Solenoid Valve B Stuck OFF
- P0777: A/T Clutch Pressure Control Solenoid Valve B Stuck ON
- P0778: Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit
- P0780: Problem in Shift Control System
- P0795: Problem in Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve C Circuit
- P0796: A/T Clutch Pressure Control Solenoid Valve C Stuck OFF
- P0797: A/T Clutch Pressure Control Solenoid Valve C Stuck ON
- P0798: Problem in A/T Clutch Pressure Control Solenoid Valve C Ciruit
- P0812: Open in Transmission Range Switch ATP RVS Switch Circuit
- P0842: Short in 2nd Clutch Transmission Fluid Pressure Switch Clutch, or 2nd Clutch Transmission Fluid Pressure Switch (Clutch) Stuck ON
- P0843: Open in 2nd Clutch Transmission Fluid Pressure Switch Circuit, or 2nd Clutch Transmission Fluid Pressure Switch Stuck OFF
- P0845: Problem in 3rd Clutch Pressure Switch Circuit
- P0847: Short in 3rd Clutch Transmission Fluid Pressure Switch Circuit, or 3rd Clutch Transmission Fluid Pressure Switch Stuck ON
- P0848: Open in 3rd Clutch Transmission Fluid Pressure Switch Circuit, or 3rd Clutch Transmission Fluid Pressure Switch Stuck OFF
- P0872: Short in 4th Clutch Transmission Fluid Pressure Switch Circuit, or 4th Clutch Transmission Fluid Pressure Switch Stuck ON
- P0873: Open in 4th Clutch Transmission Fluid Pressure Switch Circuit, or 4th Clutch Transmission Fluid Pressure Switch Stuck OFF
P0900-P0999: Transmission – Shift Solenoid/Pressure Switch
- P0962: Problem in A/T Clutch Pressure Control Solenoid Valve A Circuit
- P0963: Problem in A/T Clutch Pressure Control Solenoid Valve A
- P0966: Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit
- P0967: Problem in A/T Clutch Pressure Control Solenoid Valve B
- P0970: Problem in A/T Clutch Pressure Control Solenoid Valve C Circuit
- P0971: Problem in A/T Clutch Pressure Control Solenoid Valve C
- P0973: Short in Shift Solenoid Valve A Circuit
- P0974: Open in Shift Solenoid Valve A Circuit
- P0976: Short in Shift Solenoid Valve B Circuit
- P0977: Open in Shift Solenoid Valve B Circuit
- P0979: Short in Shift Solenoid Valve C Circuit
- P0980: Open in Shift Solenoid Valve C Circuit
- P0982: Short in Shift Solenoid Valve D Circuit
- P0983: Open in Shift Solenoid Valve D Circuit
- P0985: Short in Shift Solenoid Valve E Circuit
- P0986: Open in Shift Solenoid Valve E Circuit
P1000-P1099: Fuel and Air Metering and Auxiliary Emission Controls – Manufacturer Specific
- P1020: Valve Pause System Stuck Off
- P1021: Valve Pause System Stuck On
- P1025: Valve Pause System Sticking Off
- P1026: Valve Pause System Sticking On
- P1077: Intake Manifold Runner Control (IMRC) System Malfunction (Low rpm)
- P1078: Intake Mainfold Runner Control (IMRC) System Malfunction (High rpm)
P1100-P1199: Fuel and Air Metering – Manufacturer Specific
- P1106: Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem
- P1107: Barometric Pressure (BARO) Sensor Circuit Low Voltage
- P1108: Barometric Pressure (BARO) Sensor Circuit High Voltage
- P1121: Throttle Position (TP) Sensor Lower Than Expected
- P1122: Throttle Position (TP) Sensor Higher Than Expected
- P1128: Manifold Absolute Pressure (MAP) Sensor Circuit Lower Than Expected
- P1129: Manifold Absolute Pressure (MAP) Sensor Circuit Higher Than Expected
- P1130: Demand for Changing Both Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) and Third Heated Oxygen Sensor (Third HO2S) (Sensor 3)
- P1149: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
- P1149: Air/Fuel Ratio Sensor (Sensor 1) Circuit Lean Range
- P1157: Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS Line High Voltage
- P1157: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Circuit High Voltage
- P1157: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
- P1158: Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS- Terminal Low Voltage
- P1159: Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS+ Terminal Low Voltage
- P1162: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response
- P1163: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response
- P1163: Air/Fuel Ratio Sensor (Sensor 1) Slow Response
- P1164: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
- P1164: Air/Fuel Ratio (AF) Sensor (Sensor 1) Circuit Range/Performance
- P1165: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
- P1165: Air/Fuel Ratio Sensor (Sensor 1) Circuit Range/Performance
- P1166: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Electrical Problem
- P1166: Heated Oxgen Sensor Sensor1 (Primary HO2S) Heater Circuit Malfunction
- P1167: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction
- P1167: Heated Oxygen Sensor Sensor1 (Primary LAF HO2S) Heater System Malfunction
- P1168: Air/Fuel Ratio (A/F) Sensor (Sensor 1) LABEL Low Voltage
- P1169: Air/Fuel Ratio (A/F) Sensor (Sensor 1) LABEL High Voltage
- P1182: Fuel Temperature Sensor Circuit Low Voltage
- P1183: Fuel Temperature Sensor Circuit High Voltage
P1200-P1299: Ignition System or Misfire – Manufacturer Specific
- P1253 P1259: VTEC System Malfunction
- P1297: Electric Load Detector (ELD) Circuit Low Voltage
- P1298: Electric Load Detector (ELD) Circuit High Voltage
- P1300: Random Misfire
- P1324: Knock Sensor Power Source Circuit Low Voltage
- P1336: Engine Speed (RPM) Fluctuation Sensor Intermittent Interruption
- P1337: Engine Speed (RPM) Fluctuation Sensor No Signal
- P1355: Front Ignition Coil Power Circuit Malfunction
- P1359: Crankshaft Position (CKP)/Top Dead Center (TDC) Sensor Circuit Malfunction
- P1361: Camshaft Position (CMP) Sensor A (Top Dead Center (TDC) Sensor) Intermittent Interruption
- P1361: Top Dead Center (TDC) Sensor Intermittent Interruption
- P1362: Camshaft Position (CMP) Sensor A (Top Dead Center (TDC) Sensor) No Signal
- P1362: Top Dead Center (TDC) Sensor No Signal
- P1366: Camshaft Position (CMP) Sensor B (Top Dead Center (TDC) Sensor) Intermittent Interruption
- P1366: Top Dead Center (TDC) Sensor 2 Intermittent Interruption
- P1367: Camshaft Position (CMP) Sensor B (Top Dead Center (TDC) Sensor) No Signal
- P1367: Top Dear Center (TDC) Sensor 2 No Signal
- P1381: Cylinder Position (CYP) Sensor Intermittent Interruption
- P1382: Cylinder Position (CYP) Sensor No Signal
P1400-P1499: Auxiliary Emission Controls – Manufacturer Specific
- P1410: Air Pump Malfunction
- P1415: Air Pump Electric Current Sensor Circuit Low Voltage
- P1416: Air Pump Electric Current Sensor Circuit High Voltage
- P1420: Nox Adsorptive Catalyst System Efficiency Below Threshold
- P1438: Motor Drive Module (MDM) Overheating Signal Circuit
- P1438: Motor Drive Module (MDM) Overheating
- P1439: Motor Drive Module (MDM) Short Circuit Sensor Problem
- P1439: Motor Drive Module (MDM) Short Circuit
- P1440: IMA System Problem
- P1445: Bypass Control Problem
- P1448 P1449: Battery Module Overheating
- P1449: Battery Cell Overheating
- P1449: Battery Module Individual Voltage Input Deviation
- P1449: Battery Module Deterioration
- P1449: Battery Module Deviation
- P1454: Fuel Tank Pressure (FTP) Sensor Range/Performance Problem
- P1456: Evaporative Emissions (EVAP) Control System Leakage (Fuel Tank System)
- P1457: Evaporative Emissions (EVAP) Control System Leakage (EVAP Canister System)
- P1459: Evaporative Emission (EVAP) Purge Flow Switch Malfunction
- P1491: Exhaust Gas Recirculation (EGR) Valve Insufficient Lift
- P1486: Cooling System Malfunction
- P1491: Exhaust Gas Recirculation (EGR) Valve Insufficient Lift
- P1498: Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage
P1500-P1599: Idle Control System – Manufacturer Specific
- P1505: Positive Crankcase Ventilation (PCV) Air Leakage
- P1508 P1519: Idle Air Control Valve (IACV) Circuit Malfunction
- P1509: Idle Air Control Valve (IACV) Circuit Failure
- P1522: Brake Booster Pressure Sensor Circuit Low Voltage
- P1523: Brake Booster Pressure Sensor Circuit High Voltage
- P1524: Brake Booster Pressure Sensor Range/Performance Problem
- P1541: Climate Control Unit Signal Circuit Low Voltage
- P1542: Climate Control Unit Signal Circuit High Voltage
- P1565: Motor Commutation Signal Problem
- P1568: Battery Module Individual Voltage Input Problem
- P1568: Battery Module Temperature Signal Circuit Problem
- P1568: Battery Cell Temperature Signal Circuit Problem
- P1572: Motor Drive Module (MDM) Temperature Signal Circuit Low Input
- P1572: Motor Drive Module (MDM) Temperature Signal Circuit High Input
- P1576: Motor Drive Module (MDM) Voltge Signal Circuit Low Input
- P1577: High Voltage Detection Signal Circuit Problem
- P1580: Battery Current Circuit Problem
- P1581: Motor Power Inverter (MPI) Module Current Signal Circuit Low Input
- P1581: Motor Power Inverter (MPI) Module Current Signal Circuit High Input
- P1581: Motor Power Inverter (MPI) Module Current Signal Circuit Problem
- P1582: Motor Current U Phase Signal Circuit Low Input
- P1582: Motor Current U Phase Signal Circuit High Input
- P1583: Motor Current V Phase Signal Circuit Low Input
- P1583: Motor Current V Phase Signal Circuit High Input
- P1584: Motor Current W Phase Signal Circuit Low Input
- P1584: Motor Current W Phase Signal Circuit High Input
- P1585: Motor Current Signal Circuit Problem
- P1586: Motor Power Inverter (MPI) Module Current Signal/Battery Current Signal Circuit Problem
P1600-P1699: Computer Output Circuit – Manufacturer Specific
- P1607: Engine Control Module (ECM)/Powertrain Control Module (PCM) Internal Circuit Malfunction
- P1630: Transmission Control Module
- P1635: Battery Condition Monitor (BCM) Module Proble
- P1639: MOTB Signal Circuit Malfunction
- P1640: ACTTRQ Motor Torque Signal Circuit Low Input
- P1641: ACTTRQ Motor Torque Signal Circuit High Input
- P1642: QBATT Battery Signal Circuit Low Input
- P1643: QBATT Battery Signal Circuit High Input
- P1644: MOTFSA Signal Malfunction
- P1645: MOTFSB Signal Malfunction
- P1646: MOTSTB Signal Malfunction
- P1647: Power Command Signal Circuit Low Input
- P1647: Power Command Signal Circuit High Input
- P1647: Engine Torque Signal Circuit Low Input
- P1647: Engine Torque Signal Circuit High Input
- P1647: Mode Signal Circuit 1 Low Input
- P1647: Mode Signal Circuit 1 High Input
- P1647: Mode Signal Circuit 2 Problem
- P1647: Engine Speed Signal Circuit Problem
- P1648: Battery Condition Monitor (BCM) Module Communication Signal Circuit Problem
- P1648: Motor Control Module (MCM) Communication Signal Circuit Problem
- P1655: CVT-FI TMA/TMB Signal Line Failure
- P1656: Problem in PCM-toVTM-4 Control Unit Communications Circuit
- P1660: A/T-FI Data Line Failure/TCM – ECM Halt
- P1676 P1678: FPTDR Signal Line Failure
- P1679: RSCD Signal Circuit Malfunction
- P1681: A/T FI Signal A Cicuit Low Voltage
- P1682: A/T FI Signal A Circuit High Voltage
- P1683: Throttle Valve Default Position Spring Performance Problem
- P1684: Throttle Valve Return Spring Performance Problem
- P1686: A/T FI Signal B Circuit Low Voltage
- P1687: A/T FI Signal B Circuit High Voltage
P1700-P1799: Transmission – Manufacturer Specific
- P1705: Short in Transmission Range Switch Circuit (More than one range position is on at the same time)
- P1706: Open in Transmission Range Switch Circuit
- P1709: Problem Transmission Gear Selection Switch Circuit
- P1730: Problem in Shift Control System: Shift Solenoid Valve A and D Stuck OFF Shift Solenoid Valve B Stuck ON Shift Valves A, B, and D Stuck
- P1731: Problem in Shift Control System: Shift Solenoid Valve E Stuck ON Shift Valve E Stuck A/T Clutch Pressure Control Solenoid Valve A Stuck OFF
- P1732: Problem in Shift Control System: Shift Solenoid Valve B and C Stuck ON Shift Valves B and C Stuck
- P1733: Problem in Shift Control System: Shift Solenoid Valve D Stuck ON Shift Valve D Stuck A/T Clutch Pressure Control Solenoid Valve C Stuck OFF
- P1734: Problem in Shift Control System: Shift Solenoid Valves B and C Stuck ON Shift Valves B and C Stuck
- P1738: Problem in 2nd Clutch Pressure Switch Circuit
- P1739: Problem in 3rd Clutch Pressure Switch Circuit
- P1740: Problem in 4th Clutch Pressure Switch Circuit
- P1750: Mechanical Problem in Hydraulic Control System of A/T Clutch Pressure Control Solenoid Valve Assemblies A and B, or Problem in the Hydraulic Control System
- P1751: Mechanical Problem in Hydraulic Control System of Shift Solenoid Valve B and A/T Clutch Pressure Control Solenoid Valves A and B, or Problem in the Hydraulic Control System
- P1753: Problem in Torque Converter Clutch Solenoid Valve Circuit
- P1751 P1768: Problem in Torque Converter Clutch Solenoid Valve B Circuit
- P1773: Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit
- P1790: Throttle Position (TP) Sensor Circuit Malfunction
- P1791: Vehicle Speed Sensor (VSS) Range/Performance Problem
- P1792: Problem in Engine Coolant Temperature (ECT) Sensor Circuit
- P1793: Manifold Absolute Pressure Sensor Circuit
P1800-P1899: Transmission – Manufacturer Specific (CVT)
- P1870: Problem in CVT Speed Change Control Valve Assembly Circuit
- P1873: Problem in CVT Pulley Pressure Control Valve Assembly Circuit
- P1879: Problem in CVT Start Clutch Pressure Control Valve Assembly Circuit
- P1882: Problem in Inhibitor Solenoid Circuit
- P1884: Secondary Gear Speed Sensor 2 Circuit Malfunction
- P1885: CVT Drive Pulley Speed Sensor Circuit
- P1886: CVT Driven Pulley Speed Sensor Circuit
- P1888: CVT Speed Sensor
- P1889: Problem in CVT Speed Sensor 2 Circuit
- P1890: Shift Control System
- P1891: Problem in Start Clutch System
- P1894: CVT Speed Change Control Valve Circuit
- P1895: CVT Pulley Pressure Control Valve Circuit
P2100-P2199: Throttle Actuator Control System
- P2101: Throttle Actuator System Malfunction
- P2108: Throttle Actuator Control Module Problem
- P2118: Throttle Actuator Current Range/Performance Problem
- P2122: Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit Low Voltage
- P2123: Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit High Voltage
- P2127: Accelerator Pedal Position (APP) Sensor 2 (Throttle Position Sensor E) Circuit Low Voltage
- P2128: Accelerator Pedal Position (APP) Sensor 2 (Throttle Position Sensor E) Circuit High Voltage
- P2135: Throttle Position (TP) Sensor 1/2 Incorrect Voltage Correlation
- P2138: Accelerator Pedal Position (APP) Sensor 1/2 (Throttle Position Sensor D/E) Incorrect Voltage Correlation
- P2176: Throttle Actuator Control System Idle Position Not Learned
- P2195: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean
- P2197: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Signal Stuck Lean
P2200-P2299: Fuel and Air Metering – Manufacturer Specific
- P2227: Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem
- P2228: Barometric Pressure (BARO) Sensor Circuit Low Voltage
- P2229: Barometric Pressure (BARO) Sensor Circuit High Voltage
- P2237: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Line High Voltage
- P2238: Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS+ Line Low Voltage
- P2238: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Line Low Voltage
- P2240: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line High Voltage
- P2241: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line Low Voltage
- P2243: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line High Voltage
- P2245: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line Low Voltage
- P2247: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line High Voltage
- P2249: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line Low Voltage
- P2251: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Line High Voltage
- P2252: Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS- Line Low Voltage
- P2254: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line High Voltage
- P2255: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line Low Voltage
- P2279: Intake Air System Leak
P2400-P2499: Auxiliary Emission Controls – Manufacturer Specific
- P2413: Exhaust Gas Recirculation (EGR) System Range/Performance Problem
- P2422: Evaporative Emission (EVAP) System Vent Shut Valve Close Malfunction
P2500-P2599: Throttle Actuator Control System – Manufacturer Specific
- P2552: Throttle Actuator Control Module Relay Malfunction
P2600-P2699: VTEC System
- P2627: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit Low Voltage
- P2628: Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit High Voltage
- P2630: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit Low Voltage
- P2631: Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit High Voltage
- P2646: VTEC Oil Pressure Switch Circuit Low Voltage
- P2647: VTEC Oil Pressure Switch Circuit High Voltage
- P2648: VTEC Solenoid Valve Circuit Low Voltage
- P2649: VTEC Solenoid Valve Circuit High Voltage
P2700-P2799: Transmission – Manufacturer Specific
- P2769: Short in Torque Converter Clutch Solenoid Valve Circuit
- P2770: Open in Torque Converter Clutch Solenoid Valve Circuit
P2A00-P2AFF: Oxygen Sensor – Manufacturer Specific
- P2A00: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
- P2A03: Front A/F Sensor Circuit (Bank 2, Sensor 1) Circuit Range/Performance Problem
U0000-U0099: Network Communication
- U0073: FCAN Malfunction (Bus-off)
U0100-U0199: Network Communication – Lost Communication
- U0107: Lost Communication With Throttle Actuator Control Module
- U0121: FCAN Malfunction (TCS-PCM)
- U0155: FCAN Malfunction (Gauge Control Module-ECM/PCM)
Using OBD2 Civic Codes for Diagnosis
While this list of obd2 civic codes is extensive, remember that a code indicates a potential area of concern, not necessarily the exact faulty component. For example, a P0101 code points to a Mass Airflow (MAF) sensor issue, but the problem could be a dirty sensor, a wiring problem, or even a vacuum leak affecting the sensor’s readings.
Therefore, when you retrieve obd2 civic codes from your Honda Civic:
- Record all codes: Note down every code that appears, as multiple codes can sometimes be related.
- Research the codes: Use resources like this article and reputable online forums to understand the possible causes and symptoms associated with each code.
- Visual Inspection: Before replacing parts, perform a visual inspection. Check for loose wires, damaged hoses, and any obvious signs of damage around the suspected components.
- Systematic Troubleshooting: Follow a logical diagnostic process. Start with the most likely and easiest-to-check causes. For example, for a MAF sensor code, cleaning the sensor might be the first step.
- Professional Help: If you’re unsure about diagnosis or repair, or if the problem persists after your initial attempts, consult a qualified mechanic. They have specialized tools and expertise to accurately diagnose and fix complex issues.
Conclusion: Empowering Civic Owners with OBD2 Knowledge
Understanding obd2 civic codes empowers you to be a more informed car owner. While it’s not a substitute for professional expertise, having this knowledge allows you to communicate more effectively with mechanics, understand repair estimates better, and even tackle some simple fixes yourself. By using this guide and taking a proactive approach to your Honda Civic’s maintenance, you can ensure its longevity and keep it running smoothly for years to come. Remember to always prioritize safety and consult professionals when dealing with complex automotive issues.
