LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Isuzu >> 2003 >> Axiom Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Trouble Code Definitions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Definitions

NOTE: Not all DTCs are relevant to all models.

If scan tool displays any DTCs that are not listed, scan tool data may be faulty. Notify scan tool manufacturer of any DTCs displayed that are not included in DIAGNOSTIC TROUBLE CODE DEFINITIONS  table.

DIAGNOSTIC TROUBLE CODE INDEX

DTC Description (1) Code Type
P0101  Mass Airflow Sensor System Performance B
P0102  Mass Airflow Sensor Circuit - Low Frequency B
P0103  Mass Air Flow Sensor Circuit - High Frequency B
P0106  Manifold Absolute Pressure Sensor System Performance B
P0107  Manifold Absolute Pressure Sensor Circuit - Low Input Voltage B
P0108  Manifold Absolute Pressure Sensor - High Input Voltage B
P0112  Intake Air Temperature Sensor - Low Input Voltage B
P0113  Intake Air Temperature Circuit - High Input Voltage B
P0116  Engine Coolant Temperature Sensor - Sensor Stuck B
P0117  Engine Coolant Temperature Sensor - Low Input Voltage B
P0118  Engine Coolant Temperature Sensor - High Input Voltage B
P0125  Engine Coolant Temperature Sensor Excessive Time To Closed Loop Fuel Control B
P0128  Engine Coolant Temperature Below Thermostat Regulating Temperature B
P0131  Heated Oxygen Sensor Bank 1 Sensor 1 - Low Voltage B
P0132  Heated Oxygen Sensor Bank 1 Sensor 1 - High Voltage B
P0133  Heated Oxygen Sensor Bank 1 Sensor 1 - Slow Response B
P0134  HO2S Bank 1 Sensor 1 - Insufficient Activity B
P0135  Bank 1 Heated Oxygen Sensor No. 1 - Heater Circuit B
P0137  Heated Oxygen Sensor Bank 1 Sensor 2 - Low Voltage B
P0138  Heated Oxygen Sensor Bank 1 Sensor 2 - High Voltage B
P0140  Heated Oxygen Sensor Bank 1 Sensor 2 - Insufficient Activity B
P0141  Heated Oxygen Sensor Bank 1 Sensor 2 - Heater Circuit B
P0151  Heated Oxygen Sensor Bank 2 Sensor 1 - Low Voltage B
P0152  Heated Oxygen Sensor Bank 2 Sensor 1 - High Voltage B
P0153  Heated Oxygen Sensor Bank 2 Sensor 1 - Slow Response B
P0154  Heated Oxygen Sensor Bank 2 Sensor 1 - Insufficient Activity B
P0155  Heated Oxygen Sensor Bank 2 Sensor 1 - Heater Circuit B
P0157  Heated Oxygen Sensor Bank 2 Sensor 2 - Low Voltage B
P0158  Heated Oxygen Sensor Bank 2 Sensor 2 - High Voltage B
P0160  Heated Oxygen Sensor Bank 2 Sensor 2 - Insufficient Activity B
P0161  Heated Oxygen Sensor Bank 2 Sensor 2 - Heater Circuit B
P0171  Fuel Trim System Lean - Bank 1 B
P0172  Fuel Trim System Rich - Bank 1 B
P0174  Fuel Trim System Lean - Bank 2 B
P0175  Fuel Trim System Rich - Bank 2 B
P0201  Fuel Injector No. 1 Control Circuit Malfunction A
P0202  Fuel Injector No. 2 Control Circuit Malfunction A
P0203  Fuel Injector No. 3 Control Circuit Malfunction A
P0204  Fuel Injector No. 4 Control Circuit Malfunction A
P0205  Fuel Injector No. 5 Control Circuit Malfunction A
P0206  Fuel Injector No. 6 Control Circuit Malfunction A
P0218 (2) Transmission Fluid Over Temperature D
P0300  Engine Misfire Detected B
P0301  Cylinder No. 1 Misfire Detected B
P0302  Cylinder No. 2 Misfire Detected B
P0303  Cylinder No. 3 Misfire Detected B
P0304  Cylinder No. 4 Misfire Detected B
P0305  Cylinder No. 5 Misfire Detected B
P0306  Cylinder No. 6 Misfire Detected B
P0325  ION Sensing Module/Ion Sensing Knock Intensity Circuit Fault B
P0336  58X Reference Signal Circuit B
P0337  Crankshaft Position Sensor Circuit - Low Frequency B
P0351  Ignition Control Circuit No. 1 Malfunction A
P0352  Ignition Control Circuit No. 2 Malfunction A
P0353  Ignition Control Circuit No. 3 Malfunction A
P0354  Ignition Control Circuit No. 4 Malfunction A
P0355  Ignition Control Circuit No. 5 Malfunction A
P0356  Ignition Control Circuit No. 6 Malfunction A
P0401  Exhaust Gas Recirculation Flow Insufficient B
P0402  Exhaust Gas Recirculation Flow Excessive B
P0404  Exhaust Gas Recirculation Range/Performance B
P0405  Exhaust Gas Recirculation Sensor Circuit - Low Voltage B
P0406  Exhaust Gas Recirculation Sensor Circuit - High Voltage B
P0420  Catalyst System Low Efficiency - Bank 1 A
P0430  Catalyst System Low Efficiency - Bank 2 A
P0440  Evaporative Emissions System B
P0442  Evaporative Emissions System - Small Leak Detected B
P0444  Evaporative Emissions System - Purge Control Open Circuit D
P0445  Evaporative Emissions System - Purge Control Circuit Short D
P0446  Evaporative Emissions System - Vent Control Malfunction B
P0447  Evaporative Emissions System - Vent Valve Circuit Open D
P0448  Evaporative Emissions System - Vent Control Circuit Open D
P0452  Fuel Tank Pressure Sensor - Low Voltage B
P0453  Fuel Tank Pressure Sensor - High Voltage B
P0456  EVAP Control System Very Small Leak Detected B
P0461  Fuel Level Sensor Circuit - Range/Performance Malfunction D
P0462  Fuel Level Sensor Circuit - Low Voltage B
P0463  Fuel Level Sensor Circuit - High Voltage B
P0464  Fuel Level Sensor - Noisy Signal D
P0502  Vehicle Speed Sensor Circuit - Low Input B
P0506  Idle Control System - RPM Too Low B
P0507  Idle Control System - RPM Too High B
P0562  System Voltage Low D
P0563  System Voltage High B
P0565 (3) Cruise Main Switch Circuit Error D
P0566 (3) Cruise Cancel Switch Error D
P0567 (3) Cruise Resume Switch Error D
P0568 (3) Cruise Set Switch Error D
P0601  Powertrain Control Module Memory Error A
P0602  Powertrain Control Module Programming Error D
P0604  Powertrain Control Module Ram Error D
P0606  Powertrain Control Module Internal Performance D
P0660  Variable Intake Manifold Solenoid - Open Circuit D
P0662  Variable Intake Manifold Solenoid - Short Circuit D
P0705 (2) Transmission Range Switch Circuit Illegal Position D
P0706 (2) Transmission Range Switch Performance D
P0711 (2) Transmission Fluid Temperature Sensor Performance D
P0712 (2) Transmission Fluid Temperature Sensor Circuit Low Input D
P0713 (2) Transmission Fluid Temperature Sensor Circuit High Input D
P0719 (2) Brake Switch Circuit Low (Stuck On) D
P0722 (2) Automatic Transmission Output Speed Sensor Low Input B
P0723 (2) Automatic Transmission Output Speed Sensor Intermittent B
P0724 (2) Brake Switch Circuit High (Stuck Off) D
P0730 (2) Gear Error Without Input Speed C
P0742 (2) Torque Converter Clutch Circuit Stuck On B
P0748 (2) Transmission Pressure Control Solenoid Electrical Circuit Fault C
P0751 (2) Transmission Shift Solenoid "A" Performance (Stuck Off) B
P0752 (2) Transmission Shift Solenoid "A" Performance (Stuck On) B
P0753 (2) Transmission Shift Solenoid "A" Electrical Circuit Fault B
P0756 (2) Transmission Shift Solenoid "B" Performance (Stuck Off) B
P0757 (2) Transmission Shift Solenoid "B" Performance (Stuck On) B
P0758 (2) Transmission Shift Solenoid "B" - Electrical Circuit Fault B
P1106  Manifold Absolute Pressure Sensor Circuit - Intermittent High Voltage D
P1107  Manifold Absolute Pressure Sensor Circuit - Intermittent Low Voltage D
P1111  Intake Air Temperature Sensor Circuit - Intermittent High Voltage D
P1112  Intake Air Temperature Sensor Circuit - Intermittent Low Voltage D
P1114  Engine Coolant Temperature Sensor Circuit - Intermittent Low Voltage D
P1115  Engine Coolant Temperature Sensor Circuit - Intermittent High Voltage D
P1120  Throttle Position Sensor 1 - Output Abnormal D
P1125  Electric Throttle Control Limit Performance Mode A
P1133  HO2S Bank 1 Sensor 1 - Insufficient Switching B
P1134  HO2S Bank 1 Sensor 1 - Transition Switch Time Ratio B
P1153  HO2S Bank 2 Sensor 1 - Insufficient Switching B
P1154  HO2S Bank 2 Sensor 1 - Transition Switch Time Ratio B
P1167  Fuel System Rich During Decel Fuel Cut Off - Bank 1 D
P1169  Fuel System Rich During Decel Fuel Cut Off - Bank 2 D
P1171  Fuel System Lean During Acceleration D
P1220  Throttle Position Sensor 2 - Circuit Fault B
P1221  Throttle Position Sensor 1 & Throttle Position Sensor 2 - Correlation Error D
P1271  Acceleration Position Sensor 1 & Acceleration Position Sensor 2 Correlation Error D
P1272  Acceleration Position Sensor 2 & Acceleration Position Sensor 3 Correlation Error D
P1273  Acceleration Position Sensor 1 & Acceleration Position Sensor 3 Correlation Error D
P1275  Acceleration Position Sensor 1 - Circuit Fault B
P1280  Acceleration Position Sensor 2 Circuit Fault B
P1285  Acceleration Position Sensor 3 Circuit Fault B
P1290  Electric Throttle Control Forced Idle Mode A
P1295  Electric Throttle Control Power Management Mode A
P1299  Electric Throttle Control Forced Engine Shutdown Mode A
P1310  ION Sensing Module Diagnostic A
P1311  ION Sensing Module - SEC 1 Line Circuit Fault A
P1312  ION Sensing Module - SEC 2 Line Circuit Fault A
P1326  ION Sensing Module - Combustion Quality Circuit Fault A
P1340  ION Sensing Module - Cylinder Synchronization Failure B
P1404  Exhaust Gas Recirculation Range/Performance - Closed/Stuck Valve B
P1441  EVAP Control System - Continuous Open Purge Flow B
P1514  Throttle Position Sensor & Mass Air Flow Sensor Correlation Error A
P1515  Command - Actual Throttle Position Sensor Correlation Error A
P1516  Command - Actual Throttle Position Sensor Correlation Error A
P1523  Throttle Actuator Control Return Performance Malfunction D
P1574 (3) Brake Switch No Operation D
P1625  Powertrain Control Module Unexpected Reset D
P1626 (4) No Response From Immobilizer D
P1631 (4) Received Response Was Not Correct D
P1635  Reference Voltage No. 1 Circuit Fault D
P1636  Powertrain Control Module RAM Stack D
P1639  Reference Voltage No. 2 Circuit Fault D
P1640  Output Driver Module No. 1 Circuit Fault D
P1648 (4) Received Incorrect Security Code D
P1649 (4) Security Code & Security Key Not Programmed D
P1650  Quad Driver Module "A" Fault D
P1850 (2) Brake Band Apply Solenoid Malfunction D
P1860 (2) Torque Converter Clutch Solenoid Electrical Fault B
P1870 (2) Transmission Component Slipping B
(1) For type A DTCs, Malfunction Indicator Light (MIL) illuminates as soon as fault is detected. For type B DTCs, MIL is illuminated after 2 consecutive trips where fault is recognized. For type C DTCs, non-emissions related DTCs will cause MIL to flash as soon as fault is detected. For type D DTCs, non-emissions related DTCs will not illuminate or flash MIL.
(2) For diagnostic testing procedures, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
(3) For diagnostic testing procedures, see appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
(4) For diagnostic procedures, see appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
scientia non olet · About LEMON Manuals