Diagnostic trouble code (DTC) information
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Condition
At a certain time after the engine is started, the control module checks that the engine coolant temperature (ECT) exceeds 35 °C. Diagnostic trouble code (DTC) ECM-A2 is stored if the control module detects that the engine coolant temperature (ECT) is below 35 °C.
Substitute Value
None.
Possible Source
- Defective thermostat
- Defective engine coolant temperature (ECT) sensor
- Contact resistance in the terminals.
Fault symptom[s]
- Low engine coolant temperature (ECT)
- High fuel consumption.