Here is a detailed table of common Buick Diagnostic Trouble Codes (DTCs). These codes cover various subsystems, including the engine, transmission, emissions, and electrical components.
| Code | Description |
|---|---|
| P0101 | Mass Airflow (MAF) Sensor Circuit Range/Performance |
| P0102 | Mass Airflow (MAF) Sensor Circuit Low Input |
| P0113 | Intake Air Temperature (IAT) Sensor Circuit High Input |
| P0128 | Coolant Thermostat Temperature Below Regulating Temperature |
| P0171 | System Too Lean (Bank 1) |
| P0172 | System Too Rich (Bank 1) |
| P0300 | Random/Multiple Cylinder Misfire Detected |
| P0335 | Crankshaft Position Sensor Circuit Malfunction |
| P0340 | Camshaft Position Sensor Circuit Malfunction |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) |
| P0442 | Evaporative Emission System Leak Detected (Small Leak) |
| P0455 | Evaporative Emission System Leak Detected (Large Leak) |
| P0500 | Vehicle Speed Sensor Malfunction |
| P0562 | System Voltage Low |
| P0606 | PCM Processor Fault |
| P0700 | Transmission Control System Malfunction |
| P0741 | Torque Converter Clutch Circuit Performance or Stuck Off |
| P1128 | Long Term Fuel Trim Too Lean |
| P2181 | Cooling System Performance |
| P2270 | O2 Sensor Signal Stuck Lean (Bank 1, Sensor 2) |
| U0100 | Lost Communication With ECM/PCM |
| U0121 | Lost Communication With ABS Module |
| B1000 | ECU Malfunction |
| B1325 | Control Module Power Circuit High |
| B2955 | Key Authentication Error |
| C0035 | Left Front Wheel Speed Sensor Circuit Malfunction |
| C0245 | Wheel Speed Sensor Frequency Error |
| C0561 | ABS/Traction Control System Disabled |
| C0899 | Low Voltage Detected in Battery |
Key Systems Covered:
- Powertrain DTCs: Issues related to engine and transmission.
- Emissions System DTCs: Problems with sensors ensuring compliance with emissions standards.
- Electrical DTCs: Malfunctions in control modules, sensors, and communication networks.
- Chassis DTCs: ABS, traction control, and stability control faults.
