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 MANUALSBUICK1995REGAL GRAN SPORTREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONDTC INDEXENGINE PERFORMANCE DTCS (3.1L)
1995 Buick Regal Gran Sport
Engine Performance DTCS (3.1L)
1995 Buick Regal Gran SportSECTION Engine Performance DTCS (3.1L)
ENGINE PERFORMANCE DTCS (3.1L)
| OEM Code | Description |
|---|---|
| 13 | OPEN OXYGEN SENSOR CIRCUIT |
| 14 | COOLANT TEMP SENS SGNL VLTGE LOW (HI TEMP INDICATED) |
| 15 | COOLANT TEMP SENSOR SIGNAL VOLTAGE LOW |
| 16 | SYSTEM VOLTAGE LOW |
| 17 | CAMSHAFT SENSOR ERROR |
| 21 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE HIGH |
| 22 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE LOW |
| 23 | IAT SENSOR SIGNAL VOLTAGE HIGH (LOW TEMP INDICATED) |
| 24 | VEHICLE SPEED SENSOR |
| 25 | IAT SENSOR SIGNAL VOLTAGE LOW (HIGH TEMP INDICATED) |
| 28 | TRANS. RANGE PRESSURE SWITCH |
| 33 | MAP SENSOR SIGNAL VOLTAGE HIGH |
| 34 | MAP SENSOR SIGNAL VOLTAGE LOW |
| 35 | IAC IDLE SPEED ERROR |
| 36 | 24X SIGNAL ERROR |
| 37 | TCC BRAKE SWITCH ERROR |
| 41 | CYLINDER SELECT ERROR |
| 42 | IC CIRCUIT OPEN/GROUNDED |
| 43 | KNOCK SENSOR ERROR |
| 44 | LEAN EXHAUST INDICATION |
| 45 | RICH EXHAUST INDICATION |
| 46 | PASS-KEY CIRCUIT |
| 51 | FAULTY PROM/MEM-CAL |
| 52 | FAULTY CAL-PAK |
| 53 | SYSTEM VOLTAGE HIGH |
| 54 | FUEL PUMP VOLTAGE LOW |
| 55 | PCM ERROR |
| 58 | TRANS TEMPERATURE SENSOR HIGH TEMPERATURE |
| 59 | TRANS. TEMPERATURE SENSOR LOW TEMPERATURE |
| 66 | LOW A/C CHARGE |
| 70 | HIGH A/C PRESSURE |
| 72 | VEHICLE SPEED SENSOR CIRCUIT |
| 79 | TRANSMISSION FLUID OVERTEMP |
| 80 | TRANSAXLE COMPONENT SLIPPING |
| 82 | 3X SIGNAL ERROR |
| 85 | PROM ERROR |
| 86 | ANALOG/DIGITAL ERROR |
| 87 | EEPROM ERROR |
| 90 | TRANSAXLE COMPONENT SLIPPING |
| 96 | TRANSMISSION VOLTAGE LOW |
| 98 | INVALID PCM PROGRAM |
| 99 | INVALID PCM PROGRAM |
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.