Diagnostic Trouble Code (DTC) Information

ECM-201A THERMOSTAT
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition
During the engine warm up phase the way the engine temperature should increase is calculated. Factors such as engine load and the start temperature are taken into account. This test takes place during the engine warm-up phase and continues until the engine temperature has reached 84°C. For the test to start, the stating temperature of the engine must be below 35°C, the outside temperature must be -7 to +35°C and at least 15 minutes must have passed since the engine was last running.

Diagnostic trouble code (DTC) ECM-201A is stored in the engine control module (ECM) if the calculated increase in temperature does not correspond to the actual increase (measured by the temperature sensor).

Hint: This diagnostic trouble code (DTC) can also be caused by faults that store ECM-1100.

Condition
None

Possible source
- Malfunction indicator lamp (MIL) lamp lit
- Defective thermostat.

Condition
- None.