Monitored & Set Conditions

Fuel system lean condition is monitored when engine is running in closed loop, ambient temperature is more than 20°F (-7°C), battery temperature is more than 20°F (-7°C) and altitude is less than 8000 feet. DTC will be stored in Powertrain Control Module (PCM) memory if PCM multiplies short term compensation by long term adaptive and a certain percentage is exceeded for 2 trips. Possible causes for DTC to set are: intermittent condition, defective fuel pump module, defective Throttle Position (TP) sensor, restricted fuel inlet strainer on fuel pump, defective Engine Coolant Temperature (ECT) sensor, defective Manifold Absolute Pressure (MAP) sensor, engine mechanical problem, defective Heated Oxygen Sensor (HO2S), defective fuel filter, defective fuel pressure regulator or PCM.