Navigating the complexities of modern vehicle diagnostics can be daunting, especially when faced with a dashboard warning light. For Honda owners, understanding Honda Error Codes is the first step towards effective vehicle maintenance and repair. This guide provides a detailed breakdown of Honda fault codes, helping you decipher what these codes mean and how to approach troubleshooting.
Decoding Honda Error Codes: A Systemic Approach
Modern Honda vehicles, like most contemporary cars, utilize an On-Board Diagnostics II (OBD-II) system. This sophisticated system monitors various aspects of your vehicle’s performance and emissions, alerting you to potential issues through a series of diagnostic trouble codes (DTCs). These codes, when read using an OBD-II scanner, can pinpoint problems ranging from minor sensor malfunctions to significant engine or transmission issues.
Honda error codes can generally be categorized into two main types:
- Numeric Codes: These are typically shorter, often two or three-digit codes, and can be specific to Honda or older OBD-I systems.
- P-Codes (Powertrain Codes): These are standardized five-digit codes defined by the OBD-II protocol, starting with the letter “P,” followed by four numbers. These codes are more universally recognized across different vehicle manufacturers but have Honda-specific interpretations.
Understanding both types of codes is crucial for accurate Honda vehicle diagnostics.
Honda Specific Numeric Error Codes
These codes are often Honda-specific and can provide initial insights into potential problems. While OBD-II scanners primarily display P-codes, understanding these numeric codes can be beneficial, especially when working with older Honda models or diagnostic tools that display these codes.
| Code | Description |
|---|---|
| 1 | O2A – Oxygen sensor #1 |
| 2 | O2B – Oxygen sensor #2 |
| 3 | MAP – Manifold Absolute Pressure Sensor |
| 4 | CKP – Crank Position Sensor |
| 5 | MAP – Manifold Absolute Pressure Sensor (Redundant) |
| 6 | ECT – Engine Coolant Temperature Sensor |
| 7 | TPS – Throttle Position Sensor |
| 8 | TDC – Top Dead Centre Sensor |
| 9 | CYP – Cylinder Sensor |
| 10 | IAT – Intake Air Temperature Sensor |
| 12 | EGR – Exhaust Gas Recirculation Lift Valve |
| 13 | BARO – Atmospheric Pressure Sensor |
| 14 | IAC (EACV) – Idle Air Control Valve |
| 15 | Ignition Output Signal |
| 16 | Fuel Injectors |
| 17 | VSS – Vehicle Speed Sensor |
| 19 | Automatic Transmission Lockup Control Valve |
| 20 | Electrical Load Detector |
| 21 | VTEC Spool Solenoid Valve |
| 22 | VTEC Pressure Valve |
| 23 | Knock Sensor |
| 30 | Automatic Transmission A Signal |
| 31 | Automatic Transmission B Signal |
| 36 | Traction Control (JDM ECU) |
| 41 | Primary Oxygen Sensor Heater |
| 43 | Fuel Supply System |
| 45 | Fuel System Too Rich or Lean |
| 48 | LAF – Lean Air Fuel Sensor |
| 54 | CKF – Crank Fluctuation Sensor |
| 58 | TDC Sensor #2 |
| 61 | Primary Oxygen Sensor |
| 63 | Secondary Oxygen Sensor |
| 65 | Secondary Oxygen Sensor Heater |
| 71 | Random Misfire Cylinder 1 |
| 72 | Random Misfire Cylinder 2 |
| 73 | Random Misfire Cylinder 3 |
| 74 | Random Misfire Cylinder 4 |
Honda OBD-II P-Codes: Detailed List and Descriptions
OBD-II P-codes are the most common type of error codes you will encounter on modern Honda vehicles. They provide a standardized way to identify issues within the powertrain system. Below is an extensive list of Honda P-codes, categorized for easier navigation.
P0000 – P0099: Fuel and Air Metering and Auxiliary Emission Controls
| Code | Description |
|---|---|
| P0010 | Variable Valve Timing Control (VTC) Oil Control Solenoid Valve Malfunction |
| P0011 | Variable Valve Timing Control (VTC) System Malfunction |
| 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
| Code | Description |
|---|---|
| P0222 | Throttle Position (TP) Sensor 2 Circuit Low Voltage |
| P0223 | Throttle Position (TP) Sensor 2 Circuit High Voltage |
P0300 – P0399: Ignition System or Misfires
| Code | Description |
|---|---|
| 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 | Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption |
| 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 | Camshaft Position (CMP) Sensor B Intermittent Interruption |
| 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
| Code | Description |
|---|---|
| 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
| Code | Description |
|---|---|
| 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 |
| P0560 | ECM Back-up Circuit Low Voltage |
| P0563 | Engine Control Module (ECM)/Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage |
P0600 – P0699: Computer Output Circuit Checking
| Code | Description |
|---|---|
| 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 – P0999: Transmission
| Code | Description |
|---|---|
| P0700 | Automatic Transmission Control System |
| P0705 | Short in Transmission Range Switch Circuit (Multiple Shift-position Input) |
| P0706 | Open in Transmission Range Switch Circuit |
| P0710 | Problem in ATF Temperature Sensor Circuit |
| P0711 | Problem in ATF Temperature Sensor Circuit |
| P0712 | Short in ATF Temperature Sensor Circuit |
| P0713 | Open in ATF Temperature Sensor Circuit |
| P0715 | Problem in Mainshaft Speed Sensor Circuit |
| 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 |
| 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 |
| 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 – P1999: Manufacturer Specific Powertrain
| Code | Description |
|---|---|
| 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) |
| 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 |
| P1253 | VTEC System Malfunction |
| 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 |
| 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 | 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 |
| P1505 | Positive Crankcase Ventilation (PCV) Air Leakage |
| P1508 | Idle Air Control Valve (IACV) Circuit Malfunction |
| P1509 | Idle Air Control Valve (IACV) Circuit Failure |
| P1519 | Idle Air Control Valve (IACV) Circuit Malfunction |
| 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 |
| 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 | FPTDR Signal Line Failure |
| P1678 | RSCD Signal Circuit Malfunction |
| P1679 | A/T FI Signal A Cicuit Low Voltage |
| P1681 | A/T FI Signal A Circuit High Voltage |
| P1682 | Throttle Valve Default Position Spring Performance Problem |
| P1683 | Throttle Valve Return Spring Performance Problem |
| P1684 | A/T FI Signal B Circuit Low Voltage |
| P1686 | A/T FI Signal B Circuit High Voltage |
| P1687 | Short in Transmission Range Switch Circuit (More than one range position is on at the same time) |
| P1705 | Open in Transmission Range Switch Circuit |
| P1706 | Problem Transmission Gear Selection Switch Circuit |
| P1709 | 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 |
| P1730 | 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 |
| P1731 | Problem in Shift Control System: Shift Solenoid Valve B and C Stuck ON Shift Valves B and C Stuck |
| P1732 | 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 |
| P1733 | Problem in Shift Control System: Shift Solenoid Valves B and C Stuck ON Shift Valves B and C Stuck |
| P1734 | Problem in 2nd Clutch Pressure Switch Circuit |
| P1738 | Problem in 3rd Clutch Pressure Switch Circuit |
| P1739 | Problem in 4th Clutch Pressure Switch Circuit |
| P1740 | 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 |
| P1750 | 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 |
| P1751 | Problem in Torque Converter Clutch Solenoid Valve Circuit |
| P1753 | Problem in Torque Converter Clutch Solenoid Valve B Circuit |
| P1768 | Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit |
| P1773 | Throttle Position (TP) Sensor Circuit Malfunction |
| P1790 | Vehicle Speed Sensor (VSS) Range/Performance Problem |
| P1791 | Problem in Engine Coolant Temperature (ECT) Sensor Circuit |
| P1792 | Manifold Absolute Pressure Sensor Circuit |
| P1793 | Problem in CVT Speed Change Control Valve Assembly Circuit |
| P1870 | Problem in CVT Pulley Pressure Control Valve Assembly Circuit |
| P1873 | Problem in CVT Start Clutch Pressure Control Valve Assembly Circuit |
| P1879 | Problem in Inhibitor Solenoid Circuit |
| P1882 | Secondary Gear Speed Sensor 2 Circuit Malfunction |
| P1884 | CVT Drive Pulley Speed Sensor Circuit |
| P1885 | CVT Driven Pulley Speed Sensor Circuit |
| P1886 | CVT Speed Sensor |
| P1888 | Problem in CVT Speed Sensor 2 Circuit |
| P1889 | Shift Control System |
| P1890 | Problem in Start Clutch System |
| P1891 | CVT Speed Change Control Valve Circuit |
| P1894 | CVT Pulley Pressure Control Valve Circuit |
| P1895 | Throttle Actuator System Malfunction |
| P2101 | Throttle Actuator Control Module Problem |
| P2108 | Throttle Actuator Current Range/Performance Problem |
| P2118 | Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit Low Voltage |
| P2122 | Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit High Voltage |
| P2123 | Accelerator Pedal Position (APP) Sensor 2 (Throttle Position Sensor E) Circuit Low Voltage |
| P2127 | Accelerator Pedal Position (APP) Sensor 2 (Throttle Position Sensor E) Circuit High Voltage |
| P2128 | Throttle Position (TP) Sensor 1/2 Incorrect Voltage Correlation |
| P2135 | Accelerator Pedal Position (APP) Sensor 1/2 (Throttle Position Sensor D/E) Incorrect Voltage Correlation |
| P2138 | Throttle Actuator Control System Idle Position Not Learned |
| P2176 | Air/Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean |
| P2195 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Signal Stuck Lean |
| P2197 | Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem |
| P2227 | Barometric Pressure (BARO) Sensor Circuit Low Voltage |
| P2228 | Barometric Pressure (BARO) Sensor Circuit High Voltage |
| P2229 | Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Line High Voltage |
| P2237 | 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 |
| P2238 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line High Voltage |
| P2240 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line Low Voltage |
| P2241 | Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line High Voltage |
| P2243 | Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line Low Voltage |
| P2245 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line High Voltage |
| P2247 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line Low Voltage |
| P2249 | Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Line High Voltage |
| P2251 | Air/Fuel Ratio (A/F) Sensor (Sensor 1) AFS- Line Low Voltage |
| P2252 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line High Voltage |
| P2254 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line Low Voltage |
| P2255 | Intake Air System Leak |
| P2279 | Exhaust Gas Recirculation (EGR) System Range/Performance Problem |
| P2413 | Evaporative Emission (EVAP) System Vent Shut Valve Close Malfunction |
| P2422 | Throttle Actuator Control Module Relay Malfunction |
| P2552 | Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit Low Voltage |
| P2627 | Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit High Voltage |
| P2628 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit Low Voltage |
| P2630 | Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit High Voltage |
| P2631 | VTEC Oil Pressure Switch Circuit Low Voltage |
| P2646 | VTEC Oil Pressure Switch Circuit High Voltage |
| P2647 | VTEC Solenoid Valve Circuit Low Voltage |
| P2648 | VTEC Solenoid Valve Circuit High Voltage |
| P2649 | Short in Torque Converter Clutch Solenoid Valve Circuit |
| P2769 | Open in Torque Converter Clutch Solenoid Valve Circuit |
| P2770 | Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem |
| P2A00 | Front A/F Sensor Circuit (Bank 2, Sensor 1) Circuit Range/Performance Problem |
U-Codes: Network Communication
| Code | Description |
|---|---|
| U0073 | FCAN Malfunction (Bus-off) |
| U0107 | Lost Communication With Throttle Actuator Control Module |
| U0121 | FCAN Malfunction (TCS-PCM) |
| U0155 | FCAN Malfunction (Gauge Control Module-ECM/PCM) |
Troubleshooting Honda Error Codes: A Step-by-Step Guide
Encountering a Honda error code can be concerning, but it’s important to approach troubleshooting systematically. Here’s a general guide:
- Record the Code: Use an OBD-II scanner to retrieve the exact error code. Note down the code and its description.
- Understand the Code: Refer to the lists above or use online resources to understand what the code signifies. Identify the system or component that is potentially affected.
- Visual Inspection: Check the related components and systems for any obvious signs of damage, loose connections, or leaks. For example, if you have an oxygen sensor code, inspect the sensor and its wiring.
- Basic Troubleshooting: Depending on the code, perform basic troubleshooting steps. For example, for a misfire code, check spark plugs and ignition coils. For EVAP codes, check the fuel cap and EVAP system hoses.
- Clear the Code and Retest: After addressing potential issues, clear the error code using the OBD-II scanner. Start your Honda and see if the code reappears. Sometimes, a code can be triggered by a temporary anomaly.
- Professional Diagnosis: If the code returns, or if you are unsure about troubleshooting, it’s best to consult a qualified mechanic. Honda technicians have specialized tools and expertise to accurately diagnose and repair complex issues.
Important Note: While this guide provides a comprehensive list of Honda error codes, it’s crucial to remember that error codes are indicators, not definitive diagnoses. Further investigation and professional expertise are often necessary to pinpoint the root cause of the problem and ensure effective repair.
By understanding Honda error codes and following a systematic troubleshooting approach, you can effectively maintain your Honda vehicle and address potential issues promptly, ensuring optimal performance and longevity.
