2002 Saturn LW300FACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Definitions

NOTE: Use of a Tech 2 or generic OBD II scan tool is required to retrieve DTCs. Refer to user reference manual supplied with scan tool.
DIAGNOSTIC TROUBLE CODE INDEX

DTC Description (1) Code Type
BXXXX Body Control System Malfunction (2)
CXXXX Chassis Control System Malfunction (2)
P0030  HO2S Heater Circuit - Bank 1, Sensor 1 B
P0031  HO2S Heater Circuit - Low Voltage - Bank 1, Sensor 1 B
P0032  HO2S Heater Circuit - High Voltage - Bank 1, Sensor 1 B
P0036  HO2S Heater Circuit - Bank 1, Sensor 2 B
P0037  HO2S Heater Circuit - Low Voltage - Bank 1, Sensor 2 B
P0038  HO2S Heater Circuit - High Voltage - Bank 1, Sensor 2 B
P0050  HO2S Heater Circuit - Bank 2, Sensor 1 B
P0051  HO2S Heater Circuit - Low Voltage - Bank 2, Sensor 1 B
P0052  HO2S Heater Circuit - High Voltage - Bank 2, Sensor 1 B
P0056  HO2S Heater Circuit - Bank 2, Sensor 2 B
P0057  HO2S Heater Circuit - Low Voltage - Bank 2, Sensor 2 B
P0058  HO2S Heater Circuit - High Voltage - Bank 2, Sensor 2 B
P0101  MAF System Performance B
P0102  MAF Sensor Circuit - Low Signal/Frequency B
P0103  MAF Sensor Circuit - High Signal/Frequency B
P0107  MAP Sensor Circuit - Low Voltage B
P0108  MAP Sensor Circuit - High Voltage B
P0112  IAT Sensor Circuit - Low Voltage/High Temperature B
P0113  IAT Sensor Circuit - High Voltage/Low Temperature B
P0115  ECT Sensor Circuit B
P0116  ECT Sensor Circuit Performance B
P0117  ECT Sensor Circuit - Low Voltage/High Temperature B
P0118  ECT Sensor Circuit - High Voltage/Low Temperature B
P0121  TP Sensor No. 1 Circuit Performance A
P0122  TP Sensor No. 1 Circuit - Low Voltage A
P0123  TP Sensor No. 1 Circuit - High Voltage A
P0128  ECT Below Thermostat Regulating Temperature B
P0130  HO2S Circuit - Bank 1, Sensor 1 B
P0131  HO2S Circuit - Low Voltage - Bank 1, Sensor 1 B
P0132  HO2S Circuit - High Voltage - Bank 1, Sensor 1 B
P0134  HO2S Circuit - Insufficient Activity - Bank 1, Sensor 1 B
P0135  HO2S Heater Circuit Performance - Bank 1, Sensor 1 B
P0136  HO2S Circuit - Bank 1, Sensor 2 B
P0138  HO2S Circuit - High Voltage - Bank 1, Sensor 2 B
P0139  HO2S Circuit - Slow Response - Bank 1, Sensor 2 B
P0140  HO2S Circuit - Insufficient Activity - Bank 1, Sensor 2 B
P0141  HO2S Heater Circuit Performance - Bank 1, Sensor 2 B
P0150  HO2S Heater Circuit - Bank 2, Sensor 1 B
P0151  HO2S Circuit - Low Voltage - Bank 2, Sensor 1 B
P0152  HO2S Circuit - High Voltage - Bank 2, Sensor 1 B
P0154  HO2S Circuit - Insufficient Activity - Bank 2, Sensor 1 B
P0155  HO2S Heater Circuit Performance - Bank 2, Sensor 1 B
P0156  HO2S Circuit - Bank 2, Sensor 2 B
P0158  HO2S Circuit - High Voltage - Bank 2, Sensor 2 B
P0159  HO2S Circuit - Slow Response - Bank 2, Sensor 2 B
P0160  HO2S Circuit - Insufficient Activity - Bank 2, Sensor 2 B
P0161  HO2S Heater Circuit Performance - Bank 2, Sensor 2 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  Injector No. 1 Control Circuit B
P0202  Injector No. 2 Control Circuit B
P0203  Injector No. 3 Control Circuit B
P0204  Injector No. 4 Control Circuit B
P0205  Injector No. 5 Control Circuit B
P0206  Injector No. 6 Control Circuit B
P0218 (3) Transmission Fluid Overtemperature C
P0221  TP Sensor No. 2 Circuit Performance A
P0222  TP Sensor No. 2 Circuit - Low Voltage A
P0223  TP Sensor No. 2 Circuit - High Voltage A
P0230  Fuel Pump Relay Control Circuit D
P0231  Fuel Pump Relay Control Circuit - Low Voltage D
P0232  Fuel Pump Relay Control Circuit - High Voltage D
P0261  Injector No. 1 Control Circuit - Low Voltage B
P0262  Injector No. 1 Control Circuit - High Voltage B
P0264  Injector No. 2 Control Circuit - Low Voltage B
P0265  Injector No. 2 Control Circuit - High Voltage B
P0267  Injector No. 3 Control Circuit - Low Voltage B
P0268  Injector No. 3 Control Circuit - High Voltage B
P0270  Injector No. 4 Control Circuit - Low Voltage B
P0271  Injector No. 4 Control Circuit - High Voltage B
P0273  Injector No. 5 Control Circuit - Low Voltage B
P0274  Injector No. 5 Control Circuit - High Voltage B
P0276  Injector No. 6 Control Circuit - Low Voltage B
P0277  Injector No. 6 Control Circuit - High Voltage B
P0300  Engine Misfire Detected A
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
P0313  Misfire Detected With Low Fuel D
P0324  Knock Sensor Module Circuit C
P0327  Knock Sensor No. 1 Circuit - Low Input C
P0328  Knock Sensor No. 1 Circuit - High Input C
P0332  Knock Sensor No. 2 Circuit - Low Input C
P0333  Knock Sensor No. 2 Circuit - High Input C
P0335  Crankshaft Sensor Circuit B
P0341  Camshaft Sensor Circuit Performance B
P0342  Camshaft Sensor Circuit - Low Voltage B
P0343  Camshaft Sensor Circuit - High Voltage B
P0401  EGR Flow Insufficient B
P0402  EGR Flow Excessive B
P0403  EGR Solenoid Control Circuit B
P0405  EGR Position Sensor Circuit - Low Voltage B
P0406  EGR Position Sensor Circuit - High Voltage B
P0421  Warm-Up Catalyst Low Efficiency - Bank 1 B
P0431  Warm-Up Catalyst Low Efficiency - Bank 2 B
P0440  Evaporative Emissions (EVAP) System B
P0442  EVAP System - Small Leak Detected B
P0443  EVAP Purge Solenoid Control Circuit B
P0444  EVAP Purge Solenoid Control Circuit - Low Voltage B
P0445  EVAP Purge Solenoid Control Circuit - High Voltage B
P0446  EVAP Vent System Performance B
P0447  EVAP Vent Solenoid Control Circuit - Low Voltage B
P0448  EVAP Vent Solenoid Control Circuit - High Voltage B
P0449  EVAP Vent Solenoid Control Circuit B
P0451  EVAP Fuel Tank Pressure Sensor Circuit Performance B
P0452  EVAP Fuel Tank Pressure Sensor Circuit - Low Voltage B
P0453  EVAP Fuel Tank Pressure Sensor Circuit - High Voltage B
P0455  EVAP System Gross Leak Detected B
P0461  Fuel Level Sensor Circuit Performance D
P0462  Fuel Level Sensor Circuit - Low Voltage D
P0463  Fuel Level Sensor Circuit - High Voltage D
P0480  Cooling Fan Relay Circuit No. 1 C
P0481  Cooling Fan Relay Circuit No. 2 C
P0500  Vehicle Speed Circuit- Low Input (With ABS) B
P0502 (3) OSS Circuit - Low Input B
P0503 (3) OSS Circuit - Intermittent B
P0506  Idle Speed Low B
P0507  Idle Speed High B
P0532  A/C Refrigerant Pressure Sensor Circuit - Low Voltage D
P0533  A/C Refrigerant Pressure Sensor Circuit - High Voltage D
P0560  System Voltage D
P0562  System Voltage Low D
P0563  System Voltage High D
P0571  Cruise/Brake Switch Circuit C
P0601  ECM Memory A
P0602  ECM Not Programmed D
P0603  ECM Memory Reset A
P0604  ECM RAM A
P0604 (3) TCM RAM A
P0606  ECM Internal Performance A
P0621  Generator "L" Terminal Circuit D
P0645  A/C Clutch Relay Circuit Open D
P0646  A/C Clutch Relay Circuit - Low Voltage D
P0647  A/C Clutch Relay Circuit - High Voltage D
P0705 (3) Transmission Range Switch Circuit N/A
P0711 (3) TFT Sensor Performance C
P0712 (3) TFT Sensor Circuit - Low Voltage C
P0713 (3) TFT Sensor Circuit - High Voltage C
P0716 (3) Input Speed Sensor - Intermittent B
P0717 (3) Input Speed Sensor - Low Input N/A
P0719  Brake Switch Circuit - Low Voltage D
P0724  Brake Switch Circuit - High Voltage C
P0727 (3) Engine Speed Circuit - No Signal N/A
P0731 (3) Incorrect 1st Gear Ratio C
P0732 (3) Incorrect 2nd Gear Ratio C
P0733 (3) Incorrect 3rd Gear Ratio C
P0734 (3) Incorrect 4th Gear Ratio C
P0741 (3) TCC System Stuck Off B
P0742 (3) TCC System Stuck On A
P0748 (3) Pressure Control Solenoid Control Circuit C
P0751 (3) 1-2 Shift Solenoid Valve Performance - Stuck Off B
P0752 (3) 1-2 Shift Solenoid Valve Performance - Stuck On B
P0756 (3) 2-3 Shift Solenoid Valve Performance - Stuck On A
P0757 (3) 2-3 Shift Solenoid Valve Performance - Stuck Off A
P1245  Intake Plenum Switchover Valve D
P1271  APP Sensor No. 1 & 2 Circuit Performance A
P1277  APP Sensor No. 1 Circuit - Low Voltage A
P1278  APP Sensor No. 1 Circuit - High Voltage A
P1282  APP Sensor No. 2 Circuit - Low Voltage A
P1283  APP Sensor No. 2 Circuit - High Voltage A
P1403  EGR Position Circuit - Low Voltage B
P1405  EGR Position Circuit - High Voltage B
P1406  EGR Pintle Position Error B
P1510  Throttle Control System - In Limitation A
P1511  Throttle Control System - Limp Home System Performance A
P1516  Command Vs. Actual Throttle Position Correlation Error A
P1519  Throttle Actuator Command (TAC) Module A
P1523  Throttle Return Performance D
P1526  TP Sensor Learn Not Done After Reprogramming D
P1530  Throttle Control System - Amplifier Adjustment D
P1621 (3) TCM Memory Performance A
P1630  Theft Deterrent System - ECM In Learn Mode D
P1631  Theft Deterrent System - Password Incorrect D
P1632  Theft Deterrent System - Fuel Disabled D
P1637  Generator "L" Terminal Control Circuit - Low Input D
P1669  ABS Unit Expected D
P1780  MIL External Request By TCM B
P1779 (3) Engine Torque Delivered To TCM Signal N/A
P1780 (3) Torque Reduction Signal N/A
P1781 (3) Engine Torque Signal Circuit N/A
P1791 (3) Throttle/Pedal Position Signal N/A
P1792 (3) Engine Coolant Signal N/A
P1795 (3) Throttle Body Position Signal N/A
P1810 (3) TFP Valve Position Switch Circuit N/A
P1811 (3) Maximum Adapt & Long Shift C
P1815 (3) TFP Valve Position Switch - Start In Wrong Range N/A
P1816 (3) TFP Valve Position Switch - Park/Neutral With Drive Ratio N/A
P1817 (3) TFP Valve Position Switch - Reverse With Drive Ratio N/A
P1818 (3) TFP Valve Position Switch - Drive W/O Drive Ratio N/A
P1831 (3) Pressure Solenoid Power Circuit - Low Voltage A
P1833 (3) A/T Solenoids Power Circuit - Low Voltage A
P1842 (3) 1-2 Shift Solenoid Circuit - Low Voltage A
P1843 (3) 1-2 Shift Solenoid Circuit - High Voltage A
P1845  Torque Limit Management D
P1845 (3) 2-3 Shift Solenoid Circuit - Low Voltage A
P1847 (3) 2-3 Shift Solenoid Circuit - High Voltage A
P1860 (3) TCC PWM Solenoid Circuit N/A
P1868 (3) Transmission Fluid Life C
P1887 (3) TCC Release Switch Circuit N/A
UXXXX Communication System Malfunction (2)
(1) See CODE TYPES  under ON-BOARD DIAGNOSTICS.
(2) See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
(3) See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
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  • • 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.
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