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.
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HOMESERVICE MANUALSSATURN1999SL2 AUTOMATIC, MP6REPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXENGINE PERFORMANCE DTCS
1999 Saturn SL2 Automatic, MP6
Engine Performance DTCS
1999 Saturn SL2 Automatic, MP6SECTION Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | DEFINITION |
|---|---|
| P0105 | MAP Sensor Circuit Range/Performance |
| P0107 | MAP Sensor Circuit-Low Voltage |
| P0108 | MAP Sensor Circuit-High Voltage |
| P0112 | IAT Sensor Circuit-High Temperature |
| P0113 | IAT Sensor Circuit-Low Temperature |
| P0117 | ECT Sensor Circuit-High Temperature |
| P0118 | ECT Sensor Circuit-Low Temperature |
| P0122 | TP Sensor Circuit-Low Voltage |
| P0123 | TP Sensor Circuit-High Voltage |
| P0125 | ECT Excessive Time To Enter Closed Loop Fuel Control |
| P0130 | Closed Loop Rationality |
| P0131 | O2S Circuit-Low Voltage-Sensor 1 |
| P0132 | O2S Circuit-High Voltage-Sensor 1 |
| P0133, P1133 or P1134 | O2S Circuit-Slow Response-Sensor 1 |
| P0134 | O2S Circuit-Insufficient Activity-Sensor 1 |
| P0137 | HO2S Circuit-Low Voltage-Sensor 2 |
| P0138 | HO2S Circuit-High Voltage-Sensor 2 |
| P0140 | HO2S Circuit-Insufficient Activity-Sensor 2 |
| P0141 | HO2S Heater Circuit-Sensor 2 |
| P0171 | Fuel Trim System Lean |
| P0172 | Fuel Trim System Rich |
| P0201, P0202, P0203 &/OR P0204 | Injector Control Circuit Fault |
| P0217 | ECT Sensor Circuit-Over-Temperature |
| P0218 | Transaxle Over-Temperature |
| P0300 | Random Cylinder Misfire Detected |
| P0301, P0302, P0303 or P0304 | Specific Cylinder Misfire Detected |
| P0326 | Knock Sensor Circuit-Excessive Knock Present |
| P0327 | Knock Sensor Circuit Malfunction |
| P0336 | CKP Sensor Circuit Performance |
| P0340 | Cylinder Detect Signal Missing |
| P0341 | CMP Sensor Circuit Performance |
| P0351 or P1351 | IC Circuits No. 1 & 4 |
| P0352 or P1352 | IC Circuits No. 2 & 3 |
| P0401 | EGR System-Flow Insufficient |
| P0404 | EGR Pintle Position Error |
| P0405 | EGR Valve Position Sensor Circuit-Low Voltage/Out Of Range |
| P0410 | AIR System |
| P0420 | Catalyst System-Efficiency Below Threshold |
| P0440 | EVAP System Large Leak Detected |
| P0442 | EVAP System Small Leak Detected |
| P0443 | EVAP Purge Solenoid Circuit Fault |
| P0446 | EVAP Canister Vent Blocked |
| P0449 | EVAP System Vent Solenoid Circuit Fault |
| P0452 | Fuel Tank Pressure Sensor-Low Voltage |
| P0453 | Fuel Tank Pressure Sensor-High Voltage |
| P0461 | Fuel Level Sensor Circuit Performance |
| P0462 | Fuel Level Gauge Circuit-Low Voltage |
| P0463 | Fuel Level Gauge Circuit-High Voltage |
| P0500 | VSS Circuit |
| P0506 or P0507 | RPM Out Of Range-Low Or High |
| P0560 | Battery Voltage Out Of Range-High Or Low |
| P0561 | Battery Voltage Unstable |
| P0562 or P0563 | System Voltage Out Of Range-Low Or High |
| P0565 | Cruise Switch Circuit |
| P0571 | Brake Switch Circuit |
| P0572 | Brake Switch Low Voltage |
| P0573 | Brake Switch Stuck Closed-High Voltage |
| P0600 | Serial Communication |
| P0601 | EEPROM/Flash Error |
| P0602 | Memory/Programming Error |
| P0603 | Non-Volatile Random Access Memory Fault |
| P0604 | RAM Performance |
| P0605 | EEPROM |
| P0606 | TC Processor Malfunction |
| P0656 | Fuel Gauge Circuit |
| P1215 | EC GFD Malfunction |
| P1336 | CKP System Variation Not Learned |
| P1380 | ABS Controller Circuit |
| P1404 | EGR Valve Closed Position Error |
| P1441 | EVAP System Flow During Non-Purge |
| P1555 | EVO Circuit Fault |
| P1580 | Cruise Control Move Circuit-Low Voltage |
| P1581 | Cruise Control Move Circuit-High Voltage |
| P1582 | Cruise Control Direction Circuit-Low Voltage |
| P1583 | Cruise Control Direction Circuit-High Voltage |
| P1584 | Cruise Disengage |
| P1599 | Engine Stall Detected |
| P1601 | PCM Serial Communication |
| P1602 | ABS Message Fault |
| P1620 | Low Coolant Level Circuit |
| P1621 | PCM Memory Performance |
| P1623 | TFT Sensor Pull-Up Resistor |
| P1624 | Customer Snap Shot Function |
| P1625 | PCM Checksum/Flash Fault |
| P1627 | Analog/Digital Malfunction |
| P1628 | ECT Pull-Up Resistor |
| P1635 | 5-Volt Reference Error |
| P1639 | TCM Analog/Digital Failure |
| P1640 or P1641 | PCM Output Controls Fault-Quad Driver Module "A" Output Faults |
| P1650 or P1651 | PCM Output Controls Fault-Quad Driver Module "B" Output Faults |
| P1660 | TCM GFD Malfunction |
RENDER: 1.0x
NO RELATED
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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.