DESCRIPTION:Engine Air Temperature – Plausibility fault out of range (High Box).

MONITORED PARAMETER:Intake manifold and charge air cooler outlet temperature.

TYPICAL ENABLING CONDITIONS:1. Engine speed 1100 to 1600 rpm.2. Torque 500 to 1200 nm.3. EGR mass flow greater than .1 kg/s.4. Coolant temperature greater than 70°C.5. Ambient temperature greater than -8°C (17.6 °F).6. Barometric pressure greater than 755 mbar.

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:Always enabled

TYPICAL DURATION:10

DASH LAMPS:1. MIL2. CEL

ENGINE REACTION:Derate 25%

VERIFICATION:Once engine is warmed up such that coolant temperature greater than 70°C (158°F) and ambient conditions are such that ambient temperature greater than -8°C (17.6°F) and barometric pressure greater than 755 mbar, run the vehicle with a light load on a flat highway.

PROBABLE CAUSES:1. Air intake system faillure (charge air cooler leaks, intake piping).2. Charge air outlet temperature sensor.3. Charge air outlet temperature sensor harness/connector.

Note: If codes for EGR system active, fix those first.