Code Enable Criteria

Conditions for running DTC:

• Engine at idle.
• ECT is greater than 158°F (70°C).

Conditions for setting DTC:

• HO2S 1 output voltage stays 40-55 millivolts.
• HO2S 1 output voltage is always less than 55 millivolts.
• HO2S 1 output voltage is always greater than 40 millivolts.