VOLVO
ECM-0005 - Engine coolant temperature (ECT) sensor. Faulty signal. Intermittent fault
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
4 ModelleS70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Was bedeutet der Fehlercode?
The engine control module receives an incorrect signal from the engine coolant temperature sensor. The code is set if the engine is cold at start and the temperature then does not rise as it should within a certain time. The fault is recorded as intermittent, so it may not be visible right now.
Mögliche Ursachen
- Contact resistance in the sensor connector
- Break in the signal or earth wire
- The signal wire is shorted to supply voltage
- Faulty engine coolant temperature sensor
Was Sie tun können
- 1Check the sensor connector for contact resistance and oxidation. Clean it and make sure it is fully seated
- 2If you have a diagnostic tool, read the coolant temperature in live data when the engine is cold and again after some driving. The value should rise steadily
- 3Measure with a multimeter that the signal and earth wires to the sensor have no break and are not shorted to supply voltage
- 4Clear the fault code and road test the car. If it returns, have a workshop repair or replace the engine coolant temperature sensor
- 5Note whether the fault only appears when the engine is cold, so the workshop can reproduce it
Symptome, die Sie bemerken können3
- High idle speed
- The cooling fan runs at half speed with the ignition on and the engine running
- The exhaust smokes on start-up
Was der Fehler beeinflussen kann1
- The engine control module uses a fixed value for the engine temperature instead of the actual reading
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.