Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Intake Air Temperature (IAT) Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

Diagnostic trouble code (DTC) ECM-10 is stored if the control module detects changes in the air temperature within the normal operating range of the intake air temperature (IAT) sensor that are too rapid.

Substitute Value 

• The Wastegate diagnostic is disabled
• The EVAP diagnostic is disabled
• Limited EVAP control
• No fuel trim adaptation
• No idling speed adaptation.

Possible Source 

• Contact resistance in the terminals
• Defective intake air temperature (IAT) sensor
• Intermittent open-circuit, short-circuit to ground or short-circuit to supply voltage in the signal cable
• Intermittent open-circuit or short-circuit to supply voltage in the ground lead.

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit
• High fuel consumption
• High idling speed
• Low idling speed.