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.
1998 Saturn SL1 AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Trouble Codes
- Notes
- DTC P0105 - Map/TP Sensor Circuit Range Performance
- DTC P0106 - Map Sensor Performance Fault
- DTC P0107 &/Or P1107 - Map Sensor Circuit Low Voltage
- DTC P0108 &/Or P1106 - Map Sensor Circuit High Voltage
- IAT Temperature-To-Resistance Values
- DTC P0112 - IAT Sensor Circuit Temperature Out Of Range - Low
- DTC P0113 - IAT Sensor Circuit Temperature Out Of Range - High
- ECT Temperature-To-Resistance Values
- DTC P0117 - ECT Sensor Circuit Low Voltage
- DTC P0118 - ECT Sensor Circuit Temperature Out Of Range - High
- DTC P0122 &/Or P1122 - TP Sensor Circuit Low Voltage
- DTC P0123 Or P1121 - TP Sensor Circuit High Voltage
- DTC P0125 - Engine Cooling System Temperature Low
- DTC P0131 - O2S Circuit Voltage Low
- DTC P0132 - O2S Circuit Voltage High
- DTC P0133, P1133 Or P1134 - O2S Response Time Malfunction
- DTC P0134 - O2S Circuit Open/Inactive
- DTC P0137 - Ho2S No. 2 Circuit Voltage Low
- DTC P0138 - Ho2S No. 2 Circuit Voltage High
- DTC P0140 - Ho2S No. 2 Circuit Open/Inactive
- DTC P0141 - Ho2S No. 2 Heater Circuit Malfunction
- DTC P0171 - Learned Fuel Control (Fuel System Too Lean)
- DTC P0172 - Learned Fuel Control (Fuel System Too Rich)
- DTC P0201, P0202, P0203 &/Or P0204 - Injector Circuit Fault(S)
- DTC P0217 &/Or P0218 - Low Coolant/Hot Light Illuminated &/Or Transaxle Temperature Too High
- DTC P0300 - Random Cylinder Misfire Detected
- DTC P0301, P0302, P0303 Or P0304 - Specific Cylinder Misfire Detected
- DTC P0326 - Knock Sensor Circuit (Excessive Knock Present)
- DTC P0327 - Knock Sensor Circuit Malfunction
- DTC P0336 - Crankshaft Position (CKP) Sensor Circuit Signal Intermittent Or Noisy (Extra Pulses)
- DTC P0340 - Cylinder Detect Signal Missing
- DTC P0341 - Cylinder Detect Signal Error (Too Many Pulses)
- DTC P0351 &/Or P1351 - Ic Circuits No. 1 & 4 Malfunction Or Shorted
- DTC P0352 &/Or P1352 - Ic Circuits No. 2 & 3 Malfunction Or Shorted
- DTC P0401 - EGR System Insufficient Flow
- DTC P0404 - EGR Pintle Position Error
- DTC P0405 - EGR Feedback Voltage Out Of Range (Open/Short)
- DTC P0420 - Catalyst Efficiency Low
- DTC P0440 - EVAP System Large Leak Detected)
- DTC P0442 - EVAP System (Small Leak Detected)
- DTC P0443 - EVAP Canister Purge Solenoid Circuit Fault
- DTC P0446 - EVAP System Canister Vent Blocked
- DTC P0449 - EVAP System Vent Solenoid Circuit Fault
- DTC P0452 - Tank Pressure Sensor Circuit Fault (Low Voltage)
- DTC P0453 - Tank Pressure Sensor Circuit Fault (High Voltage)
- DTC P0462 - Fuel Level Gauge Circuit Voltage Low
- DTC P0463 - Fuel Level Gauge Circuit Voltage High
- DTC P0500 - Vehicle Speed Sensor (VSS) Circuit - No Signal
- DTC P0506, P0507, P1508 &/Or P1509 - Rpm Out Of Range &/Or IAC Valve Circuit Fault
- DTC P0560 - Battery Voltage Out Of Range (High Or Low)
- DTC P0561 - Battery Voltage Unstable
- DTC P0562 Or P0563 - Battery Voltage Out Of Range High Or Low)
- DTC P0565 - Cruise Switch Circuit Malfunction
- DTC P0571 - Brake Switch Signal Invalid
- DTC P0572 - Brake Switch Voltage Low
- DTC P0573 - Brake Switch Stuck Closed (Voltage High)
- DTC P0600 - Serial Communication
- DTC P0601 - EEPROM/Flash Error
- DTC P0602 - Memory/Programming Error
- DTC P0603 - Non-Volatile Random Access Memory Fault
- DTC P0604 - Ram Error
- DTC P0605 - EEPROM
- DTC P0606 - TC Processor Malfunction
- DTC P0656 - Fuel Gauge Circuit Fault
- DTC P1215 - EC GFD Malfunction
- DTC P1336 - Crankshaft Notch Adaptive Not Learned
- DTC P1380 - Abs Controller Circuit
- DTC P1404 - EGR Valve Closed Position Error
- DTC P1441 - EVAP Canister Purge Solenoid Flow During Non-Purge
- DTC P1555 - EVO Circuit Fault (DOHC)
- DTC P1580 - Cruise Control Move Circuit Voltage Low
- DTC P1581 - Cruise Control Move Circuit Voltage High
- DTC P1582 - Cruise Control Direction Circuit Low Voltage
- DTC P1583 - Cruise Control Direction Circuit High Voltage
- DTC P1584 - Cruise Disengage
- DTC P1599 - Engine Stall Detected
- DTC P1601 - Pcm Serial Communication
- DTC P1602 - Abs Message Fault
- DTC P1620 - Low Coolant Level Circuit
- DTC P1621 - Pcm Memory Error
- DTC P1623 - Transaxle Temperature Pull-Up Resistor Malfunction
- DTC P1624 - Customer Snap Shot Function
- DTC P1625 - Pcm Checksum/Flash Fault
- DTC P1627 - A/D Malfunction
- DTC P1628 - ECT Pull-Up Resistor
- DTC P1635 - 5-Volt Reference Error
- DTC P1639 - TCM A/D Failure
- DTC P1640 &/Or P1641 - Pcm Output Controls Fault QDM "A" Output Faults)
- DTC P1650 &/Or P1651 - Pcm Output Controls Fault QDM "B" Output Faults)
- DTC P1660 - TCM GFD Malfunction
- DTC P1691 - Temperature Gauge Circuit
- DTC P1693 - Tachometer Circuit Fault
- DTC P1695 - Remote Keyless Entry (RKE) Open Or Short To Ground
- DTC P1696 - Remote Keyless Entry (RKE) High Voltage
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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