Diagnostic trouble code (DTC) information

Condition

Fig 1: Locating Outside Temperature Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

If the control module receives a signal from the outside temperature sensor corresponding to a temperature lower than -39°C (low signal) or higher than +129°C (high signal) the control module interprets it as a fault and ECM-1100 is stored.

Substitute Value

The values from the engine intake air temperature (IAT) sensor.

Possible Source

Signal too high:

short-circuit to ground in the signal cable
faulty outside temperature sensor

Signal too low:

open-circuit in the signal cable
short-circuit to supply voltage in the signal cable
faulty outside temperature sensor
contact resistance in terminals.

Fault symptom[s]

Malfunction indicator lamp (MIL) lit.