Conditions for Running the DTC

DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0128, P0335, P0336 are not set.
The engine speed is more than 450 RPM.
The engine coolant temperature (ECT) is between 70-125°C (158-257°F).
The intake air temperature (IAT) is between -7°C and +125°C (+19°F and +257°F).
DTC P0121 runs continuously when the above conditions are met.