Code Enable Criteria
PCM will run diagnostic for this DTC under the following conditions
- DTC P0107, P0108, P0122, P0123, P1106, P1107, P1121, or P1122 are not set.
- Engine has been running longer than 2 minutes.
- Engine coolant temperature is more than 167°F (75°C).
- MAP reading is less than 50 kPa for a TP sensor skewed high test, or more than 70 kPa for a TP sensor skewed low test.
- MAP reading is steady for at least 5 seconds.
DTC P0121 will set when:
- TP sensor reading is more than predicted value when MAP is less than 50 kPa.
- TP sensor reading is less than predicted value when MAP is more than 70 kPa.
- Conditions are present for 5 seconds.