Code Enable Criteria

For DTC to run, the following conditions must be met:

• DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0131-P0135, P0137, P0138, P0140, P0141, P0151-P0155, P0171-P0175, P0200, P0300, P0325, P0327, P0332, P0335, P0336, P0351-P0358, P0430, P0500, P0502, P0503, P1133, P1134, P1153, and P1154 are not set.
• Engine operates for more than 30 seconds.
• Engine run time is more than 20 seconds after closed loop operation.
• Engine speed is more than 850 RPM.
• Maximum airflow is 22 grams/second.
• ECT is 14-255°F (-10 to 110°C).
• IAT is 14-212°F (-10 to 100°C).
• Ignition voltage is more than 11.7 volts.
• Engine load is less than 40 percent.
• Air/fuel ratio is 13.125:1.
• Engine is not operating in power enrichment mode or deceleration fuel cut-off mode.
• Short term integrators are monitored while in fuel trim cells 1, 2, 5, or 20.

DTC will set when AIR pump turns ON during closed loop operation and HO2S voltage does not go less than 222 mV for 0.9 seconds or when AIR pump turns ON during closed loop operation and short term fuel trim does not change more than a predetermined value.