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)QUICK LOOKUPSDTC INDEXAUTOMATIC TRANSMISSIONS DTCS
1995 Buick Regal Gran Sport
Automatic Transmissions DTCS
1995 Buick Regal Gran SportSECTION Automatic Transmissions DTCS
AUTOMATIC TRANSMISSIONS DTCS
| OEM Code | Description |
|---|---|
| 21 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE HIGH - 2.3L "N" BODY |
| 22 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE LOW - 2.3L "N" BODY |
| 24 | VEHICLE SPEED SENSOR - 2.3L "N" BODY |
| 27 | QUAD-DRIVER NO. 1 ERROR - 2.3L "N" BODY |
| 29 | QUAD-DRIVER 3 - 2.3L "N" BODY |
| 53 | SYSTEM VOLTAGE HIGH - 2.3L "N" BODY |
| P0122 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE LOW - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P0122 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE LOW - 3.8L "U" BODY |
| P0123 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE HIGH - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P0123 | THROTTLE POSITION SENSOR SIGNAL VOLTAGE HIGH - 3.8L "U" BODY |
| P016 | GENERATOR VOLTAGE OUT OF RANGE |
| P021 | SHORTED THROTTLE POSITION (TP) SENSOR |
| P022 | OPEN THROTTLE POSITION (TP) SENSOR |
| P024 | VEHICLE SPEED SENSOR (VSS) CIRCUIT PROBLEM |
| P039 | TORQUE CONVERTER CLUTCH (TCC) ENGAGEMENT PROBLEM (1 OF 5) |
| P0501 | VSS CIRCUIT - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P0501 | VSS CIRCUIT - 3.8L "U" BODY |
| P0502 | VSS CIRCUIT - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P0502 | VSS CIRCUIT - 3.8L "U" BODY |
| P057 | SHORTED TRANSAXLE TEMPERATURE SENSOR CIRCUIT |
| P059 | OPEN TRANSAXLE TEMPERATURE SENSOR CIRCUIT |
| P070 | INTERMITTENT THROTTLE POSITION (TP) SENSOR |
| P070 3 | TCC BRAKE SWITCH INPUT - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P070 3 | TCC BRAKE SWITCH INPUT - 3.8L "U" BODY |
| P070 5 | TRANSAXLE RANGE SWITCH - 3.1L "A" BODY, 3.4L "W" BODY |
| P070 5 | TRANSAXLE RANGE SWITCH - 3.8L "C", "G", "H" & "W" BODIES |
| P070 5 | TRANSAXLE RANGE SWITCH - 3.8L "U" BODY |
| P0712 | TRANSAXLE TEMP. SENSOR LOW TEMPERATURE INDICATED - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P0712 | TRANSAXLE TEMPERATURE SENSOR SIGNAL VOLTAGE LOW - 3.8L "U" BODY |
| P0713 | TRANSAXLE TEMP. SENSOR HIGH TEMPERATURE INDICATED - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P0713 | TRANSAXLE TEMPERATURE SENSOR SIGNAL VOLTAGE HIGH - 3.8L "U" BODY |
| P0740 | TORQUE CONVERTER CLUTCH - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P0740 | TORQUE CONVERTER CLUTCH - 3.8L "U" BODY |
| P075 | VEHICLE SPEED SENSOR SIGNAL INTERRUPT |
| P075 5 | TRANS. SHIFT SOLENOID "B" - 3.1L "A" BODY, 3.4L "W" BODY & 3.8L "C", "G", "H" & "W" BODIES |
| P075 5 | TRANSAXLE SHIFT SOLENOID "B" - 3.8L "U" BODY |
| P090 | TCC BRAKE SWITCH INPUT CIRCUIT PROBLEM |
| P091 | TRANSAXLE RANGE SWITCH PROBLEM |
| P096 | TORQUE CONVERTER OVERSTRESS |
| P1550 | CRUISE STEPPER MOTOR - 3.1L "A" BODY |
| P1550 | CRUISE STEPPER MOTOR - 3.4L "W" BODY |
| P1550 | CRUISE STEPPER MOTOR - 3.8L "W" BODY |
| P1640 | QDM "A" CIRCUIT - 3.1L "A" BODY |
| P1640 | QDM "A" ERROR - 3.4L "W" BODY |
| P1640 | QDM NO. 1 CIRCUIT - 3.8L "C", "G", "H" & "W" BODIES |
| P1640 | QDM NO. 1 CIRCUIT - 3.8L "U" BODY |
| P1650 | QDM "B" CIRCUIT - 3.1L "A" BODY |
| P1650 | QDM "B" ERROR - 3.4L "W" BODY |
| P1650 | QDM NO. 2 CIRCUIT - 3.8L "C", "G", "H" & "W" BODIES |
| P1650 | QDM NO. 2 CIRCUIT - 3.8L "U" BODY |
RENDER: 1.0x
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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.