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.
1996 Saturn SL2 Automatic, MP6FACTORY OEM SERVICE PROCEDURE
Trouble Code Definition
TROUBLE CODE IDENTIFICATION
| Code No. | Circuit Affected | ||
|---|---|---|---|
| P0105 | MAP/TP Sensor Circuit | ||
| P0106 | MAP Performance | ||
| P0107 | MAP Voltage Low | ||
| P0108 | MAP Voltage High | ||
| P0112 | IAT Sensor Signal Voltage High | ||
| P0113 | IAT Sensor Signal Voltage Low | ||
| P0117 | ECT Sensor Signal Voltage High | ||
| P0118 | ECT Sensor Signal Voltage Low | ||
| P0121 | TP Sensor Range/Performance | ||
| P0122 | TP Sensor Signal Voltage Low | ||
| P0123 | TP Sensor Signal Voltage High | ||
| P0125 | Cooling System Temp. Low | ||
| P0131 | O2S/HO2S Signal Voltage Low | ||
| P0132 | O2S/HO2S Signal Voltage High | ||
| P0133 | O2S/HO2S Voltage Slow Response | ||
| P0134 | O2S/HO2S Insufficient/No Activity Detected | ||
| P0137 | Rear/No. 2 HO2S Voltage Low | ||
| P0138 | Rear/No. 2 HO2S Voltage High | ||
| P0140 | Rear/No. 2 HO2S Insufficient/No Activity Detected | ||
| P0141 | Rear/No. 2 HO2S Heater Circuit Fault | ||
| P0171 | Fuel Trim System Lean | ||
| P0172 | Fuel Trim System Rich | ||
| P0200 | Injector Control Circuit | ||
| P0201 | Cyl. No. 1 Injector Circuit Fault | ||
| P0202 | Cyl. No. 2 Injector Circuit Fault | ||
| P0203 | Cyl. No. 3 Injector Circuit Fault | ||
| P0204 | Cyl. No. 4 Injector Circuit Fault | ||
| P0217 | Hot Light Requested, Engine Hot | ||
| P0218 | Hot Light Requested, Transaxle Hot | ||
| P0300 | Engine Misfire Detected | ||
| P0301 | Cyl. No. 1 Misfire Detected | ||
| P0302 | Cyl. No. 2 Misfire Detected | ||
| P0303 | Cyl. No. 3 Misfire Detected | ||
| P0304 | Cyl. No. 4 Misfire Detected | ||
| P0326 | Knock Sensor - Too Much Noise | ||
| P0327 | Knock Sensor Circuit Fault | ||
| P0336 | CKP Sensor Signal Erratic | ||
| P0340 | CMP Sensor Location Signal Missing/No Frequency | ||
| P0341 | CMP Location Signal Error | ||
| P0351 | IC Cyl. No. 1 & 4 Circuit Faulty | ||
| P0352 | IC Cyl. No. 2 & 3 Circuit Faulty | ||
| P0401 | EGR System Insufficient Flow | ||
| P0404 | EGR Pintle Position Fault | ||
| P0405 | EGR Voltage Out Of Range | ||
| P0420 | Catalytic Converter Efficiency Fault | ||
| P0440 | EVAP Canister Purge System Fault | ||
| P0443 | EVAP Canister Purge Solenoid Circuit Fault | ||
| P0500 | VSS No Signal | ||
| P0506 | Idle RPM Too Low | ||
| P0507 | Idle RPM Too High | ||
| P0560 | TCM Voltage Out Of Range | ||
| P0561 | System Voltage Unstable | ||
| P0562 | System Voltage Low | ||
| P0563 | System Voltage High | ||
| P0565 | Cruise Control Switch Circuit Fault | ||
| P0571 | Brake Switch Circuit Fault | ||
| P0572 | Brake Switch Circuit Input Voltage Low | ||
| P0573 | Brake Switch Circuit Input Voltage High | ||
| P0600 | PCM Serial Data Link Fault | ||
| P0601 | EEPROM/Flash Fault | ||
| P0602 | Memory/Programming Error | ||
| P0603 | Non-Volatile Access Memory Fault | ||
| P0604 | RAM Error | ||
| P0605 | EEPROM Fault | ||
| P0606 | TC Processor Malfunction | ||
| P0702 (1) | Transaxle Actuator Voltage Low | ||
| P0705 (1) | Transaxle Selector Sw., Incorrect Data | ||
| P0706 (1) | Transaxle Selector Sw., Invalid Data | ||
| P0708 (1) | Transaxle Selector Sw., No Data | ||
| P0710 (1) | Transaxle Fluid Temp. Sensor Signal Low | ||
| P0712 (1) | Transaxle Fluid Temp. Sensor Voltage Low | ||
| P0713 (1) | Transaxle Fluid Temp. Sensor Voltage High | ||
| P0716 (1) | Turbine Speed Sensor Signal Noisy Input/Turbine Speed Sensor Circuit | ||
| P0717 (1) | Turbine Speed Sensor No Signal | ||
| P0721 (1) | Vehicle Speed Sensor Signal Noisy | ||
| P0722 (1) | Vehicle Speed Sensor No Signal | ||
| P0727 (1) | Engine Speed Signal Fault | ||
| P0730 (1) | Transaxle, No Gears Available | ||
| P0731 (1) | Transaxle, No 1st Gear | ||
| P0732 (1) | Transaxle, No 2nd Gear | ||
| P0733 (1) | Transaxle, No 3rd Gear | ||
| P0734 (1) | Transaxle, No 4rd Gear | ||
| P0740 (1) | Transaxle TCC Actuator Circuit Open/Grounded | ||
| P0741 (1) | Transaxle TCC Fault | ||
| P0742 (1) | Transaxle TCC Stuck On | ||
| P0743 (1) | Trans. TCC Actuator Circuit Shorted To Voltage | ||
| P0744 (1) | Trans. TCC Actuator Circuit Intermittent Fault | ||
| P0745 (1) | Transaxle Line Pressure Low | ||
| P0746 (1) | Trans. Line Actuator Circuit Open/Grounded | ||
| P0747 (1) | Trans. Line Actuator Circuit Shorted To Voltage | ||
| P0748 (1) | Transaxle Line Pressure High | ||
| P0749 (1) | Trans. Line Actuator Circuit Intermittent Fault | ||
| P0756 (1) | Trans. 2nd Gear Actuator Circuit Open/Grounded | ||
| P0758 (1) | Trans. 2nd Gear Actuator Circuit Shorted To Voltage | ||
| P0759 (1) | Trans. 2nd Gear Actuator Circuit Intermittent Fault | ||
| P0761 (1) | Trans. 3rd Gear Actuator Circuit Open/Grounded | ||
| P0763 (1) | Trans. 3rd Gear Actuator Circuit Shorted To Voltage | ||
| P0764 (1) | Trans. 3rd Gear Actuator Circuit Intermittent Fault | ||
| P0766 (1) | Trans. 4th Gear Actuator Circuit Open/Grounded | ||
| P0768 (1) | Trans. 4th Gear Actuator Circuit Shorted To Voltage | ||
| P0769 (1) | Trans. 4th Gear Actuator Circuit Intermittent Fault | ||
| P0781 (1) | Trans. 2nd Gear Stuck On | ||
| P0782 (1) | Trans. 3rd Gear Stuck On | ||
| P0783 (1) | Trans. 4th Gear Stuck On | ||
| P1106 | MAP Sensor Voltage Intermittently High | ||
| P1107 | MAP Sensor Voltage Intermittently Low | ||
| P1111 | IAT Sensor Temperature Intermittently Low | ||
| P1112 | IAT Sensor Temperature Intermittently High | ||
| P1114 | ECT Sensor Temperature Intermittently High | ||
| P1115 | ECT Sensor Temperature Intermittently Low | ||
| P1121 | TP Sensor Voltage Intermittently High | ||
| P1122 | TP Sensor Voltage Intermittently Low | ||
| P1133 | O2S Insufficient/Too Few Switches | ||
| P1134 | O2S Rich/Lean - Lean/Rich Error | ||
| P1215 | GFD Detected A Fault | ||
| P1351 | IC Cyl. No. 1 & 4 Circuit High Voltage | ||
| P1352 | IC Cyl. No. 2 & 3 Circuit High Voltage | ||
| P1380 | ABS Controller, Faults In ABS Circuits | ||
| P1406 | EGR Pintle Position Circuit Fault | ||
| P1508 | Idle Air Control Stuck Closed | ||
| P1509 | Idle Air Control Stuck Open | ||
| P1555 | EVO Circuit Fault | ||
| P1580 | Cruise Control Move Circuit Voltage Low | ||
| P1581 | Cruise Control Move Circuit Voltage High | ||
| P1582 | Cruise Control Direction Circuit Voltage Low | ||
| P1583 | Cruise Control Direction Circuit Voltage High | ||
| P1584 | Cruise Control Disabled | ||
| P1599 | Engine Stall Or Near Stall Detected | ||
| P1601 | PCM Serial Communications Faults | ||
| P1602 | PCM Serial Communications Loss Of ABS Serial Data | ||
| P1620 | Engine Coolant Low | ||
| P1621 | Memory Error | ||
| P1623 | Transaxle Temp. Sensor Pull-Up Resistor Fault | ||
| P1624 | Customer Snap Shot Function | ||
| P1625 | PCM Checksum Transaxle Memory Error | ||
| P1627 | A/D Malfunction | ||
| P1628 | PCM ECT Pull-Up Resistor Fault | ||
| P1635 | Sensor 5-Volt Reference Circuits Low/High | ||
| P1639 | TCM A/D Signal Fault | ||
| P1640 | Quad Driver Module "A" Detected A Fault | ||
| P1641 | Quad Driver Module "A" Quick Set Detected A Fault | ||
| P1650 | Quad Driver Module "B" Detected A Fault | ||
| P1651 | Quad Driver Module "B" Quick Set Detected A Fault | ||
| P1660 | TCM GFD Malfunction | ||
| P1691 | Coolant Temp. Gauge Circuit Fault | ||
| P1693 | Tachometer Gauge Circuit Fault | ||
| P1695 | Remote Keyless Entry Circuit Low | ||
| P1696 | Remote Keyless Entry Circuit High | ||
|
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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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