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-0F is stored if the control module receives a signal from the intake air temperature (IAT) sensor which corresponds to a temperature lower than -48 °C (low signal) or higher than +142 °C (high signal).

Substitute Value

When driving: latest correct values
Adaptation values not updated.

Possible Source

Signal too high:

Short-circuit to supply voltage in the signal cable
Open-circuit in the signal cable or in the ground lead
Faulty intake air temperature (IAT) sensor.

Signal too low:

Short-circuit to ground in the signal cable
Faulty intake air temperature (IAT) sensor.

Fault symptom[s]

Malfunction indicator lamp (MIL) lit
No leak diagnostic.