Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Engine Control Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

The engine control module (ECM) has registered an internal fault in the temperature sensor circuit. Diagnostic trouble code (DTC) ECM-7140 is then stored.

Substitute Value 

• engine cooling fan (FC) at low-speed
• the engine control module (ECM) assumes a temperature of 60 °C (140°F).

Possible Source 

Signal too high: 

• internal fault in control module.

Fault symptom[s] 

None.