VOLVO
ECM-P256800 - Direct Ozone Reduction Catalyst Temperature Sensor Circuit Range/Performance. General Failure Information. No sub type information
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
4 ModelleS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Modelle nach Baujahr und Motor anzeigen (7)
Was bedeutet der Fehlercode?
The engine control module (ECM) compares the radiator temperature sensor signal with the ambient and coolant temperatures at certain times. The code is set when the radiator changes temperature in a way that does not match the other temperatures. The fault may lie in the sensor, the radiator, the electric cooling fan or another temperature-related fault. Even though the code is named after a catalyst temperature sensor, it concerns the radiator temperature sensor.
Mögliche Ursachen
- Another temperature-related fault in the control module, which should be traced first
- Electric cooling fan performance too low
- Contact resistance and oxidation in the connections
- Damaged radiator
Was Sie tun können
- 1Read the codes for other temperature sensors and fix those first, since this code can be caused by one of them
- 2Check that the electric cooling fan starts and runs, because this code can appear when it does not work
- 3If you have a diagnostic tool: activate the electric cooling fan and listen for it to start
- 4Check that the connector to the radiator temperature sensor is firmly seated and free from oxidation
- 5Look over the radiator for external damage
- 6If none of this finds anything, have a workshop decide whether the radiator or the sensor needs replacing
Symptome, die Sie bemerken können1
- Emissions warning light comes on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.