Throttle Position Sensor Range/Performance
| Code | P0121 |
| Description | Throttle Position Sensor Range/Performance |
| Possible Causes | The TPS is out of its expected range. |
| System | Fuel and Air Metering |
Throttle Position Sensor Range/Performance. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the fuel and air metering.
P = Powertrain code
0 = Generic (SAE standard)