Code Enable Criteria

Conditions for running DTC:

• DTCs P0105, P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0169, P0171, P0172, P0178, P0179, P0201-P0204, P0300, P0301-P0304, P0336, P0440, P0446, P0446, P0452, P0453, P0506, P0507, P0601, P0602 or P1441 are not set.
• ECT is greater than 158°F (70°C).
• Engine run time more than 200 seconds.
• TP is 9-18 percent.
• Engine speed is 1600-2450 RPM.
• Fuel level is greater than 10 percent.
• EVAP Pulse Width Modulation (PWM) is more than 35.6 percent.
• Engine is operating in closed-loop.
• Purge learned memory is greater than about 0.78.
• Fuel ethanol composition is less than 15 percent.
• MAP is greater than 25 kPa.

Conditions for setting DTC:

• Average O2S 1 response times are more than 1119 milliseconds for rich-to-lean sweeps, or 760 milliseconds for lean-to-rich sweeps, or sum of rich-to-lean and lean-to-rich is greater than 1235 milliseconds.
• Average O2S 1 L/R sweep is more than 971 milliseconds for A/T or 1111 milliseconds for M/T.
• Average R/L added to average L/R sweep is more than 971 milliseconds for A/T or 1111 milliseconds for M/T.