2002 Isuzu Trooper LS, RWDFACTORY OEM SERVICE PROCEDURE

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 DEFINITIONS

DTC Malfunction/Affected Sensor Or Circuit (1) 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
P0117  Engine Coolant Temperature Sensor - Low 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 Sensor Below Thermostat Regulating Temperature B
P0131  Bank 1 Heated Oxygen Sensor No. 1 - Low Voltage B
P0132  Bank 1 Heated Oxygen Sensor No. 1 - High Voltage B
P0133  Bank 1 Heated Oxygen Sensor No. 1 - Slow Response B
P0134  Bank 1 Heated Oxygen Sensor No. 1 - No Activity B
P0135  Bank 1 Heated Oxygen Sensor No. 1 - Heater Circuit B
P0137  Bank 1 Heated Oxygen Sensor No. 2 - Low Voltage B
P0138  Bank 1 Heated Oxygen Sensor No. 2 - High Voltage B
P0140  Bank 1 Heated Oxygen Sensor No. 2 - No Activity B
P0141  Bank 1 Heated Oxygen Sensor No. 2 - Heater Circuit B
P0151  Bank 2 Heated Oxygen Sensor No. 1 - Low Voltage B
P0152  Bank 2 Heated Oxygen Sensor No. 1 - High Voltage B
P0153  Bank 2 Heated Oxygen Sensor No. 1 - Slow Response B
P0154  Bank 2 Heated Oxygen Sensor No. 1 - Insufficient Activity B
P0155  Bank 2 Heated Oxygen Sensor No. 1 - Heater Circuit B
P0157  Bank 2 Heated Oxygen Sensor No. 2 - Low Voltage B
P0158  Bank 2 Heated Oxygen Sensor No. 2 - High Voltage B
P0160  Bank 2 Heated Oxygen Sensor No. 2 - Insufficient Activity B
P0161  Bank 2 Heated Oxygen Sensor No. 2 - Heater Circuit B
P0171  Bank 1 Fuel Trim System Lean B
P0172  Bank 1 Fuel Trim System Rich B
P0174  Bank 2 Fuel Trim System Lean B
P0175  Bank 2 Fuel Trim System Rich B
P0201  Injector No. 1 Control Circuit Malfunction A
P0202  Injector No. 2 Control Circuit Malfunction A
P0203  Injector No. 3 Control Circuit Malfunction A
P0204  Injector No. 4 Control Circuit Malfunction A
P0205  Injector No. 5 Control Circuit Malfunction A
P0206  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
P0341  Camshaft Position Sensor Circuit Performance D
P0342  Camshaft Position Sensor - Circuit Low D
P0351  Ignition 1 Control Circuit Malfunction A
P0352  Ignition 2 Control Circuit Malfunction A
P0353  Ignition 3 Control Circuit Malfunction A
P0354  Ignition 4 Control Circuit Malfunction A
P0355  Ignition 5 Control Circuit Malfunction A
P0356  Ignition 6 Control Circuit Malfunction A
P0401  Exhaust Gas Recirculation Flow Insufficient B
P0402  Exhaust Gas Recirculation Pintle Crank Error B
P0404  Exhaust Gas Recirculation Range/Performance Open Valve B
P0405  Exhaust Gas Recirculation Sensor - Low Voltage B
P0406  Exhaust Gas Recirculation Sensor - High Voltage B
P0420  Low Catalyst Efficiency Bank 1 A
P0430  Low Catalyst 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 Short Circuit D
P0446  Evaporative Emissions System - Canister Vent (Cut) 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 - 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 - Low RPM B
P0507  Idle Control System - High RPM B
P0562  System Voltage Low D
P0563  System Voltage High B
P0565  Cruise Main Switch Circuit Error D
P0566  Cruise Cancel Switch Error D
P0567  Cruise Resume Switch Error D
P0568  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
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 - Circuit Malfunction D
P1125  Electric Throttle Control Limit Performance Mode A
P1133  Bank 1 HO2S No. 1 Circuit - Insufficient Switching B
P1134  Bank 1 HO2S No. 1 Circuit - Transition Time Ratio B
P1153  Bank 2 HO2S No. 1 Circuit - Insufficient Switching B
P1154  Bank 2 HO2S No. 1 Circuit - Transition Time Ratio B
P1167  Fuel System Rich During Decel Fuel Cut Off (Bank 1) 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 Malfunction B
P1280  Acceleration Position Sensor 2 - Circuit Malfunction B
P1285  Acceleration Position Sensor 3 - Circuit Malfunction 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 Id Fault - Cylinder Synchronization Failure B
P1404  Exhaust Gas Recirculation Range/Performance Stuck Valve B
P1441  Evaporative System Flow During Non-Purge 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  Brake Switch No Operation D
P1625  Powertrain Control Module Unexpected Reset 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
P1646  Reference Voltage No. 3 Circuit Fault 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 MIL will not illuminate or flash.
(2) For diagnostic testing procedures, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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