Conditions For Running The DTC

DTCs P0053, P0054, P0068, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0122, P0123, P0125, P0128, P0130, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0300, P0301-P0306, P0326, P0327, P0332, P0336, P0340, P0341, P0442, P0446, P0452, P0453, P0455, P0496, P0502, P0506, P0507, P0601, P0602, P0604, P0606, P060D, P060E, P0641, P0651, P1133, P1137, P1138, P1516, P1621, P2101, P2120, P2125, P2135, P2138, P2176, P2A01 are not set.
The engine speed is within 150 RPM of the desired idle.
The engine coolant temperature (ECT) is between 70-125°C (158-257°F).
The barometric pressure (BARO) is more than 75 kPa.
The vehicle is in Closed Loop.
The intake air temperature (IAT) is between -20.5 and +80°C (-5 and +176°F).
The battery voltage is more than 11 volts.
The engine run time is more than 10 minutes.
The vehicle speed is less than 4.8 km/h (3 mph).
The engine load must be stable.
The number of test attempts per trip is less than 12.
The predicted catalyst temperature is between 475-675°C (887-1247°F).
Test the catalyst by performing the following procedures:
- Drive the vehicle, engine speed above 1,500 RPM, for at least 60 seconds.
- Idle the engine and keep the vehicle in Drive, or depress the clutch pedal for a manual transmission vehicle, to activate the diagnostic. Within 60 seconds, the air fuel ratio will become rich, below 14.1, for up to 7 seconds, and then may become lean, above 15.3, for up to 7 seconds.
- Verify if DTC P0420 has passed or failed this ignition cycle with the scan tool.
This diagnostic attempts 1 test during each valid idle period, once the above conditions have been met. This diagnostic attempts up to 12 tests during each drive cycle.