Conditions for Running the DTC

DTCs P0030 is not set.
The Ignition 1 Signal parameter is between 11-18 volts.
The Mass Airflow (MAF) Sensor parameter is between 5-25 g/s.
The Engine Run Time parameter is more than 60 seconds.
The Engine Speed parameter is between 500-3,000 RPM.
The Ignition 1 Signal parameter varies less than 1 volt.
DTC P0135 runs the heater current test twice per drive cycle when the above conditions are met for 2 seconds.