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 MANUALSSATURN1995SL1 STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXENGINE PERFORMANCE DTCS
1995 Saturn SL1 Standard
Engine Performance DTCS
1995 Saturn SL1 StandardSECTION Engine Performance DTCS
ENGINE PERFORMANCE DTCS
| OEM Code | Description | ||||
|---|---|---|---|---|---|
| 12(1) | No RPM Reference Pulse | ||||
| 13 | Oxygen Sensor Circuit Open; Left Oxygen Sensor Circuit Open (Dual-Sensor Models) | ||||
| 14 | Coolant Temperature Sensor Signal Voltage Low | ||||
| 15 | Coolant Temperature Sensor Signal Voltage High | ||||
| 17 | PCM Fault, Pull-Up Resistor | ||||
| 19 | 6X Signal Fault | ||||
| 21 | TPS Signal Voltage High | ||||
| 22 | TPS Signal Voltage Low | ||||
| 23 | IAT Sensor Circuit (Low Temp Indicated) | ||||
| 24 | Vehicle Speed Sensor | ||||
| 25 | IAT Sensor Circuit (High Temp Indicated) | ||||
| 26 | Quad-Driver Error | ||||
| 32 | EGR System Error | ||||
| 33 | MAP Sensor Signal Voltage High | ||||
| 34 | MAP Sensor Signal Voltage Low | ||||
| 35 | IAC Idle Speed Error | ||||
| 41 | IC Circuit Open Or Grounded | ||||
| 41 & 42(2) | By-Pass Open, IC Circuit Grounded | ||||
| 42 | By-Pass Circuit Open Or Shorted | ||||
| 43 | Knock Sensor Error | ||||
| 44 | Lean Exhaust Indication | ||||
| 45 | Rich Exhaust Indication | ||||
| 49 | High Idle RPM, Vacuum Leak | ||||
| 51 | Faulty PROM, MEM-CAL Or ECM/PCM | ||||
| 52 | Faulty CAL-PAK | ||||
| 53 | System Voltage Error | ||||
| 55 | PCM Error | ||||
| 58 | Transmission Fluid Temperature High | ||||
| 59 | Transmission Fluid Temperature Low | ||||
| 66 | A/C Pressure Sensor | ||||
| 67 | A/C Pressure Sensor | ||||
| 81 | ABS Message Fault | ||||
| 82 | Internal PCM Communication Fault | ||||
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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.