The P0129 fault code, applicable to all car manufacturers, means that the atmospheric pressure is too low.
The P0128 is a generic OBD-II powertrain trouble code. Its official definition is “Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)”.
The P0127 is a generic OBD-II powertrain trouble code. Its official definition is “Intake Air Temperature Too High”.
The P0126 is a generic OBD-II powertrain trouble code. Its official definition is “Insufficient Coolant Temperature for Stable Operation”.
The P0125 is a generic OBD-II powertrain trouble code. Its official definition is “Insufficient Coolant Temperature for Closed Loop Fuel Control”.
The P0124 is a generic OBD-II powertrain trouble code. Its official definition is “Throttle/Pedal Position Sensor/Switch ‘A’ Circuit Intermittent”.
The P0123 is a generic OBD-II powertrain trouble code. Its official definition is “Throttle/Pedal Position Sensor/Switch ‘A’ Circuit High Input”.
The P0121 is a generic OBD-II powertrain trouble code. Its official definition is “Throttle/Pedal Position Sensor/Switch ‘A’ Circuit Range/Performance Problem”.