October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

When Monitored

This diagnostic runs continuously when the following conditions are met:

Cold start condition.
Engine running at idle.
The difference between the Ambient Air Temperature (AAT) Sensor and Engine Coolant Temperature (ECT) Sensor values at startup less than 15°C (27°F).
AAT Sensor value between -7°C and 50°C (19.4°F and 122°F).
ECT Sensor value between -7°C and 50°C (19.4°F and 122°F).