Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Saturn L100FACTORY OEM SERVICE PROCEDURE
Engine Performance - 2.2L DTCS
ENGINE PERFORMANCE - 2.2L DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC P0105 | MAP SENSOR CIRCUIT RANGE/PERFORMANCE |
| DTC P0107 | MAP SENSOR CIRCUIT - LOW VOLTAGE |
| DTC P0108 | MAP SENSOR CIRCUIT - HIGH VOLTAGE |
| DTC P0112 | IAT SENSOR CIRCUIT - LOW VOLTAGE/HIGH TEMPERATURE |
| DTC P0113 | IAT SENSOR CIRCUIT - HIGH VOLTAGE/LOW TEMPERATURE |
| DTC P0116 | ECT SENSOR PERFORMANCE |
| DTC P0117 | ECT SENSOR CIRCUIT - LOW VOLTAGE/HIGH TEMPERATURE |
| DTC P0118 | ECT SENSOR CIRCUIT - HIGH VOLTAGE/LOW TEMPERATURE |
| DTC P0122 | TP SENSOR CIRCUIT - LOW VOLTAGE |
| DTC P0123 | TP SENSOR CIRCUIT - HIGH VOLTAGE |
| DTC P0125 | ECT EXCESSIVE TIME TO ENTER CLOSED LOOP |
| DTC P0128 | COOLANT THERMOSTAT |
| DTC P0130 | HO2S1 CLOSED LOOP RATIONALITY |
| DTC P0131 | HO2S1 CIRCUIT - LOW VOLTAGE |
| DTC P0132 | HO2S1 CIRCUIT - HIGH VOLTAGE |
| DTC P0133 | HO2S1 CIRCUIT - SLOW RESPONSE |
| DTC P0134 | HO2S1 CIRCUIT - INSUFFICIENT ACTIVITY |
| DTC P0135 | HO2S1 HEATER PERFORMANCE |
| DTC P0137 | HO2S2 CIRCUIT - LOW VOLTAGE |
| DTC P0138 | HO2S2 CIRCUIT - HIGH VOLTAGE |
| DTC P0140 | HO2S2 CIRCUIT - INSUFFICIENT ACTIVITY |
| DTC P0141 | HO2S2 CIRCUIT - HEATER MALFUNCTION |
| DTC P0171 | FUEL TRIM SYSTEM LEAN |
| DTC P0172 | FUEL TRIM SYSTEM RICH |
| DTC P0201, P0202, P0203, P0204 | INJECTOR CONTROL CIRCUIT |
| DTC P0217 | ECT SENSOR CIRCUIT OVER TEMPERATURE |
| DTC P0300 | ENGINE MISFIRE DETECTED |
| DTC P0301, P0302, P0303, P0304 | CYLINDERS NO. 1-4 MISFIRE DETECTED |
| DTC P0326 | KNOCK SENSOR PERFORMANCE |
| DTC P0327 | KNOCK SENSOR CIRCUIT |
| DTC P0336 | CRANKSHAFT POSITION SENSOR CIRCUIT |
| DTC P0340 | CAMSHAFT POSITION SENSOR CIRCUIT |
| DTC P0341 | CAMSHAFT POSITION SENSOR - CIRCUIT PERFORMANCE |
| DTC P0410 | AIR SYSTEM |
| DTC P0420 | CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD |
| DTC P0440 | EVAPORATIVE EMISSION SYSTEM |
| DTC P0442 | EVAP SYSTEM - SMALL LEAK DETECTED |
| DTC P0446 | EVAP VENT SOLENOID VALVE CONTROL SYSTEM |
| DTC P0452 | EVAP FUEL TANK PRESSURE SENSOR CIRCUIT - LOW VOLTAGE |
| DTC P0453 | EVAP FUEL TANK PRESSURE SENSOR CIRCUIT - HIGH VOLTAGE |
| DTC P0461 | FUEL LEVEL SENSOR CIRCUIT PERFORMANCE |
| DTC P0462 | FUEL LEVEL SENSOR CIRCUIT - LOW VOLTAGE |
| DTC P0463 | FUEL LEVEL SENSOR CIRCUIT - HIGH VOLTAGE |
| DTC P0480 | COOLING FAN CONTROL RELAY NO. 1 CIRCUIT |
| DTC P0481 | COOLING FAN CONTROL RELAY NO. 2 CIRCUIT |
| DTC P0502 | VSS CIRCUIT - LOW INPUT (M/T WITHOUT ABS) |
| DTC P0502 | VSS CIRCUIT - LOW INPUT (M/T WITH ABS) |
| DTC P0502 | VSS CIRCUIT - LOW INPUT (A/T) |
| DTC P0503 | VSS CIRCUIT - INTERMITTENT (A/T) |
| DTC P0506 | IDLE SPEED LOW |
| DTC P0507 | IDLE SPEED HIGH |
| DTC P0530 | A/C REFRIGERANT PRESSURE SENSOR CIRCUIT |
| DTC P0562 & P0563 | SYSTEM VOLTAGE LOW OR HIGH |
| DTC P0601 | PCM MEMORY |
| DTC P0602 | PCM NOT PROGRAMMED |
| DTC P0621 | GENERATOR "L" TERMINAL CIRCUIT |
| DTC P0622 | GENERATOR "F" TERMINAL CIRCUIT |
| DTC P0705 | TRANSMISSION RANGE SWITCH CIRCUIT |
| DTC P0719 | BRAKE SWITCH CIRCUIT HIGH |
| DTC P0724 | BRAKE SWITCH CIRCUIT LOW |
| DTC P1133 | HO2S1 CIRCUIT - INSUFFICIENT SWITCHING |
| DTC P1137 | O2S SYSTEM MONITOR - LEAN SYSTEM OR LOW VOLTAGE |
| DTC P1138 | O2S SYSTEM MONITOR - RICH SYSTEM OR HIGH VOLTAGE |
| DTC P1171 | FUEL SYSTEM LEAN DURING ACCELERATION |
| DTC P1336 | CRANKSHAFT POSITION SYSTEM VARIATION NOT LEARNED |
| DTC P1441 | EVAP SYSTEM FLOW DURING NON-PURGE |
| DTC P1599 | ENGINE STALL OR NEAR STALL DETECTED |
| DTC P1621 | PCM LONG TERM MEMORY PERFORMANCE |
| DTC P1630 | THEFT DETERRENT SYSTEM - PCM IN LEARN MODE |
| DTC P1631 | THEFT DETERRENT SYSTEM - PASSWORD INCORRECT |
| DTC P1632 | THEFT DETERRENT SYSTEM - FUEL DISABLED |
| DTC P1640 | CONTROL MODULE OUTPUT CIRCUIT |
| DTC P1640 | A/C RELAY CONTROL CIRCUIT LOW VOLTAGE |
| DTC P1640 | A/C RELAY CONTROL CIRCUIT HIGH VOLTAGE |
| DTC P1683 | CONTROL MODULE IGNITION OFF TIMER PERFORMANCE |
Factory Service Tools
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When to See a Mechanic
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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