VOLVO
ECM-2720 - Engine coolant temperature (ECT) sensor. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Vis modeller per årsmodell og motor (6)
- Volvo S60 (2001–2009)2005Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S80 (1999–2006)2005Kun motor: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo S80 (1999–2006)2006Kun motor: B5244T4
- Volvo V70 (2000–2008)2005Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 XC / XC70 (2001–2007)2005Alle motorer unntatt: D5244T
- Volvo XC90 (2003–)2005Kun motor: B5254T2, B6294T
Hva betyr feilkoden?
The ECM compares the sensor signal with a calculated engine temperature. If the signal stays static and does not match the calculated value, the code is set. It is stored together with another fault code for the coolant temperature sensor.
Mulige årsaker
- Contact resistance and oxidation in the connectors
- The temperature sensor is damaged
Hva du kan gjøre
- 1Read the other fault code for the coolant temperature sensor first and fix it
- 2Disconnect the connector to the electric cooling fan before working in the engine bay, since the fan can run even when the ignition is off
- 3Check the connector on the temperature sensor for contact resistance and oxidation
- 4Check the coolant level and that the coolant has the right freeze protection, since a frozen sensor can cause this code
- 5With diagnostic equipment, read the engine temperature after starting and see whether it rises in step with warm-up
Symptomer du kan merke2
- Malfunction indicator lamp (MIL) on
- The engine is hard to start
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