Perhaps telling us what the code means, what car you drive etc etc would help us more.
P0068 - Throttle Position Sensor Inconsistent with the Mass Air Flow Sensor
Possible causes
- Faulty Mass Air Flow (MAF) sensor
- Large vacuum leak
- Leaking air duct system
- Mass Air Flow (MAF) poor electrcial connection
- Manifold Absolute Pressure (MAP) poor electrcial connection
- Faulty Manifold Absolute Pressure (MAP) sensor
- TP sensor not seated properly
- Faulty Throttle Position (TP) sensor