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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK1996ROADMASTER BASEREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION DIAGNOSIS - 4L60-EELECTRONIC SELF-DIAGNOSTICSTROUBLE CODE DEFINITIONS
1996 Buick Roadmaster Base
Trouble Code Definitions
1996 Buick Roadmaster BaseSECTION Trouble Code Definitions
NOTE:
Only transmission-related trouble codes are listed. For engine-related DTCs, see appropriate TESTS W/CODES
article in ENGINE PERFORMANCE section. Engine related DTCs must be repaired first, as engine performance and related component signals will affect transmission operation and diagnosis.
PCM/VCM TROUBLE CODE DEFINITIONS (CARS)
| DTC | Circuit Affected |
|---|---|
| P0502 | Vehicle Speed Sensor Circuit (Low Input) |
| P0560 | System Voltage Malfunction |
| P0712 | Trans. Fluid Temp. (TFT) Sensor Circuit (Low Input) |
| P0713 | Trans. Fluid Temp. (TFT) Sensor Circuit (High Input) |
| P0719 | Brake Switch Circuit Low Input (Switch Stuck On) |
| P0724 | Brake Switch Circuit High Input (Switch Stuck Off) |
| P0742 | TCC Circuit Inoperative (Stuck On) |
| P0748 | Pressure Control Solenoid Electrical Malfunction |
| P0751 | 1-2 Shift Solenoid ("A") Performance Malfunction |
| P0753 | 1-2 Shift Solenoid ("A") Electrical Malfunction |
| P0756 | 2-3 Shift Solenoid ("B") Performance Malfunction |
| P0758 | 2-3 Shift Solenoid ("B") Electrical Malfunction |
| P1572 | Traction Control Circuit Active |
| P1810 | Transmission Fluid Pressure (TFP) Switch Malfunction |
| P1812 | Transmission Fluid Overtemp. |
| P1860 | TCC Pulse Width Modulated (PWM) Solenoid Electrical Malfunction |
| P1864 | TCC Solenoid Electrical Malfunction |
| P1870 | Transmission Component Slipping |
| P1873 | Torque Converter Stator Temp. Switch Low |
| P1874 | Torque Converter Stator Temp. Switch High |
| P1886 | 3-2 Shift Solenoid Electrical Malfunction |
PCM/VCM TROUBLE CODE DEFINITIONS (TRUCKS)
| DTC | Circuit Affected |
|---|---|
| P0502 | Vehicle Speed Sensor Circuit (Low Input) |
| P0560 | System Voltage Malfunction |
| P0712 | Trans. Fluid Temp. (TFT) Sensor Circuit (Low Input) |
| P0713 | Trans. Fluid Temp. (TFT) Sensor Circuit (High Input) |
| P0719 | Brake Switch Circuit Low Input (Switch Stuck On) |
| P0724 | Brake Switch Circuit High Input (Switch Stuck Off) |
| P0742 | TCC Circuit Inoperative (Stuck On) |
| P0748 | Pressure Control Solenoid Electrical Malfunction |
| P0751 | 1-2 Shift Solenoid ("A") Performance Malfunction |
| P0753 | 1-2 Shift Solenoid ("A") Electrical Malfunction |
| P0756 | 2-3 Shift Solenoid ("B") Performance Malfunction |
| P0758 | 2-3 Shift Solenoid ("B") Electrical Malfunction |
| P1810 | Transmission Fluid Pressure (TFP) Switch Malfunction |
| P1812 | Transmission Fluid Overtemp. |
| P1860 | TCC Pulse Width Modulated (PWM) Solenoid Electrical Malfunction |
| P1864 | TCC Solenoid Electrical Malfunction |
| P1870 | Transmission Component Slipping |
| P1875 | 4WD-Low Circuit Malfunction |
| P1886 | 3-2 Shift Solenoid Electrical Malfunction |
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.