2003 Saturn Ion 1 AutomaticFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Definitions

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

DTC (1) Definition (2) Code Type
BXXXX Body Control DTC (3)
CXXXX Suspension/Brake DTC (3)
P0031 Or P0037  HO2S Heater Circuit Low Voltage - Bank 1; Sensor 1 Or 2 B
P0032 Or P0038  HO2S Heater Circuit High Voltage - Bank 1; Sensor 1 Or 2 B
P0106  Manifold Absolute Pressure System Performance B
P0107  Manifold Absolute Pressure Sensor Circuit - Low Voltage A
P0108  Manifold Absolute Pressure Sensor Circuit - High Voltage A
P0112  Intake Air Temperature Sensor Circuit - Low Voltage A
P0113  Intake Air Temperature Sensor Circuit - High Voltage B
P0116  Engine Coolant Temperature Sensor Circuit Performance B
P0117  Engine Coolant Temperature Sensor Circuit - Low Voltage A
P0118  Engine Coolant Temperature Sensor Circuit - High Voltage A
P0122  Throttle Position Sensor Circuit - Low Voltage A
P0123  Throttle Position Sensor Circuit - High Voltage A
P0125  Engine Coolant Temperature Insufficient For Closed Loop Fuel Control B
P0128  Engine Coolant Temperature Below Thermostat Regulating Temperature B
P0130  HO2S Circuit Closed Loop Performance - Sensor 1 B
P0131  HO2S Circuit Low Voltage - Sensor 1 B
P0132  HO2S Circuit High Voltage - Sensor 1 B
P0133  HO2S Slow Response - Sensor 1 B
P0134  HO2S Circuit Insufficient Activity - Sensor 1 B
P0135 Or P0141  HO2S Heater Circuit - Bank 1; Sensor 1 Or 3 B
P0137  HO2S Circuit Low Voltage - Bank 1; Sensor 2 B
P0138  HO2S Circuit High Voltage - Bank 1; Sensor 2 B
P0140  HO2S Circuit Insufficient Activity - Bank 1; Sensor 2 B
P0171  Fuel Trim System Lean A
P0172  Fuel Trim System Rich A
P0200  Injector Control Circuit Voltage D
P0217 (4) Engine Over Temperature - Hot Light Requested D
P0261, P0264, P0267 Or P0270  Injector Control Circuit - Low D
P0262, P0265, P0268 Or P0271  Injector Control Circuit - High D
P0300  Engine Misfire Detected B
P0315  Crankshaft Position System Variation Not Learned A
P0324  Knock Control System Error B
P0326  Knock Sensor Performance D
P0327  Knock Sensor Circuit B
P0336  Crankshaft Position Sensor Performance B
P0340  Camshaft Position Sensor Circuit - Low Input B
P0341  Camshaft Position Sensor Performance B
P0351  Ignition Coil "A" Primary/Secondary Circuit D
P0352  Ignition Coil "B" Primary/Secondary Circuit D
P0420  Catalyst System Efficiency Below Threshold - Bank 1 A
P0442  Evaporative Emission Control System - Small Leak Detected A
P0444  Evaporative Emission Control System Purge Control Valve Circuit Open D
P0445  Evaporative Emission Control System Purge Control Valve Circuit Shorted D
P0446  Evaporative Emission Control System Vent Control Circuit A
P0447  EVAP Vent Valve Control Circuit Open D
P0448  EVAP Vent Valve Control Circuit Shorted D
P0452  Fuel Tank Pressure Sensor Circuit - Low Voltage A
P0453  Fuel Tank Pressure Sensor Circuit - High Voltage A
P0455  Evaporative Emission Control System Leak Detected (Gross Leak/No Flow) A
P0461 (5) Fuel Level Sensor Performance D
P0462 (5) Fuel Level Sensor Circuit - Low Voltage D
P0463 Fuel Level Sensor Circuit - High Voltage D
P0480 Or P0691 (4) Cooling Fan 1 Control Circuit D
P0496  Evaporative Emission Control System Leak Detected (Very Small Leak) A
P0500 (6) Vehicle Speed Sensor A
P0506  Idle Speed Low B
P0507  Idle Control System RPM Higher Than Expected B
P0508  Idle Control System Circuit - Low D
P0509  Idle Control System Circuit - High D
P0520 (5) Engine Oil Pressure Sensor/Switch Circuit C
P0532 (7) A/C Refrigerant Pressure Sensor "A" Circuit - Low Voltage D
P0533 (7) A/C Refrigerant Pressure Sensor "A" Circuit - High Voltage D
P0562 (8) System Voltage - Low D
P0563 (8) System Voltage - High D
P0565 (9) Cruise Control ON Signal D
P0572 (9) Cruise Brake Switch 1 Control Circuit - Low Voltage D
P0573 (9) Cruise Brake Switch 1 Control Circuit - High Voltage D
P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683 Or P2610  ECM Malfunction A
P0616 (8) Starter Relay Circuit Low D
P0617 (8) Starter Relay Circuit High D
P0621 (8) Generator "L" Terminal Control Circuit D
P0622 (8) Generator "F" Terminal Control Circuit D
P0628  Fuel Pump "A" Control Circuit - Low D
P0629  Fuel Pump "A" Control Circuit - High D
P0630  VIN Not Programmed Or Incompatible - ECM C
P0641  ECM Detects A Voltage Out-Of-Tolerance Condition On The 5-Volt Reference Circuit A
P0646 (7) A/C Clutch Relay Circuit - Low Voltage D
P0647 (7) A/C Clutch Relay Circuit - High Voltage D
P0650  MIL Control Circuit A
P0700  Transmission Control System (MIL Request) A
P1133  HO2S Insufficient Switching - Sensor 1 B
P1134  HO2S Transition Time Ratio - Sensor 1 B
P1351  IC Circuit Open D
P1352  Ignition Bypass Circuit Open/High Voltage D
P1540 (7) A/C System High Pressure D
P1574 (9) Stoplight/Brake Pedal Position Switch D
P1580 (9) Cruise Control Move Circuit - Low Voltage D
P1581 (9) Cruise Control Move Circuit - High Voltage D
P1582 (9) Cruise Control Direction Circuit - Low Voltage D
P1583 (9) Cruise Control Direction Circuit - High Voltage D
P1584 (9) Cruise Control Disabled D
P1587 (9) Cruise Control Clutch Control Circuit - Low D
P1588 (9) Cruise Control Clutch Control Circuit - High D
P1599  Engine Stall Or Near Stall Detected D
P1624  ECM RAM Performance D
P1626 (10) Theft Deterrent System Fuel Enable Circuit C
P1630 (10) Theft Deterrent System - ECM In Learn Mode C
P1631 (10) Theft Deterrent System - Password Incorrect C
P1700  Transmission Control Module Requested MIL Illumination C
UXXXX Communication DTC (3)
(1) DTC definitions may vary depending on vehicle and/or engine configuration.
(2) See CODE TYPES  under ON-BOARD DIAGNOSTICS.
(3) See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
(4) See appropriate ELECTRIC COOLING FANS article in ENGINE COOLING.
(5) See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
(6) See appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS.
(7) See appropriate A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
(8) See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
(9) See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
(10) See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
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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.
  • • You are not confident in the next step or safety outcome.

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