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
Engine Controls - Tests W/Codes
- Introduction
- Self-Diagnostic System
- Notes
- There Are 4 Types Of DTC Category:
- Hard Failures
- Intermittent Failures
- DTC Info Mode
- DTC Status
- Fail This IGN.
- History
- Last Test Fail
- Mil Request
- Not Run SCC
- Test Fail SCC
- Failed Since Clear
- Not Run Since Cl.
- Not Run This IGN.
- Test Ran And Passed
- Diagnostic Procedure
- Reading Trouble Codes
- Trouble Code Definition
- Hard Or Intermittent Trouble Code Determination
- Clearing Diagnostic Trouble Codes (DTC)
- Pcm/VCM Location
- Diagnostic Materials
- Special Tools (Diagnostic)
- Scan Tool Usage
- Scan Data
- Specifications
- Summary
- Diagnostic Trouble Codes
- Notes
- DTC P0105 - Map/TP Sensor Circuits Sensor Stuck - Out Of Range
- DTC P0106 - Map Sensor Performance Fault
- DTC P0107 &/Or P1107 - Map Sensor Circuit Voltage Out Of Range
- DTC P0108 &/Or P1106 - Map Sensor Circuit Voltage Out Of Range (High)
- DTC P0112 &/Or P1112 - IAT Sensor Circuit Low Voltage
- DTC P0113 &/Or P1111 - IAT Sensor Circuit High Voltage
- DTC P0117 &/Or P1114 - ECT Sensor Circuit Low Voltage
- DTC P0118 &/Or P1115 - ECT Sensor Circuit High Voltage
- DTC P0121 - TP Sensor Circuit Voltage Out Of Range
- 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 Low Voltage
- DTC P0132 - O2S Circuit High Voltage
- DTC P0133, P1133 Or P1134 - O2S Response Time Malfunction
- DTC P0134 - O2S Circuit Open/Inactive
- DTC P0137 - Ho2S Circuit Low Voltage Sensor 2
- DTC P0138 - Ho2S Circuit High Voltage Sensor 2
- DTC P0140 - Ho2S Circuit Open/Inactive Sensor 2
- DTC P0141 - Ho2S Heater Circuit Sensor 2
- 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
- DTC P0301, P0302, P0303 Or P0304 - Specific Cylinder Misfire
- DTC P0326 - Knock Sensor Circuit Excessive Knock
- DTC P0327 - Knock Sensor Circuit No Change
- DTC P0336 - Crankshaft Position Sensor Circuit Signal
- DTC P0340 - Cylinder Detect Signal Missing
- DTC P0341 - Cylinder Detect Signal Error Too Many Pulses
- DTC P0351 &/Or P1351 - Ic Circuits No. 1 & 4
- DTC P0352 &/Or P1352 - Ic Circuits No. 2 & 3 Malfunction Or Shorted
- DTC P0401 - EGR System Insufficient Flow
- DTC P0404 - EGR System Pintle Position Error
- DTC P0405 - EGR System Circuit Open/Short
- DTC P0420 - Catalyst Efficiency Low
- DTC P0440 &/Or P0443 - EVAP Canister Purge Solenoid Circuit Fault
- DTC P0500 - Vehicle Speed Sensor Circuit
- DTC P0506, P0507, P1508 &/Or P1509 - Rpm Out Of Range &/Or IAC Valve Circuit Fault
- DTC P0560 - Battery Voltage High Or Low
- DTC P0561 - Battery Voltage Unstable
- DTC P0562 Or P0563 - Battery Voltage High Or Low
- DTC P0565 - Cruise Switch Circuit
- DTC P0571 - Brake Switch Signal Invalid
- DTC P0572 - Brake Switch Voltage Low
- DTC P0573 - Brake Switch 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 P1215 - EC GFD Malfunction
- DTC P1380 - Abs Controller Circuit
- DTC P1406 - EGR Valve Pintle Position Error
- 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/Pcm Serial Data Communications
- DTC P1620 - Low Coolant Level Circuit
- DTC P1621 - 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 - 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 Open Or Short To Ground
- DTC P1696 - Remote Keyless Entry (RKE) High Voltage
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.