Was bedeutet der Fehlercode ECM-270B?

Diagnose und Fehlercodedefinition für ECM-270B (Volvo C70 (2006–2013), Volvo C70 (2006–2013), Volvo S40 (2004–2013)). Steuergerätereparatur bei OBD Tuning.

VOLVO

ECM-270B - Engine coolant temperature (ECT) sensor. Signal missing

System

Motorsteuergerät (ECM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

3 Modelle

C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)

Modelle nach Baujahr und Motor anzeigen (7)

Was bedeutet der Fehlercode?

Although the fault is shown as a missing signal, the sensor reads a lower temperature than the one the engine control module (ECM) has calculated since the engine started. If the calculated temperature becomes higher than the sensor signal, the code is set.

Mögliche Ursachen

The temperature sensor is damaged
The coolant thermostat is damaged

Was Sie tun können

1Disconnect the connector to the electric cooling fan before working in the engine bay, since the fan can run even when the ignition is off
2Check the connector on the temperature sensor for contact resistance and oxidation
3Check the coolant level and that the coolant has the right freeze protection, since a frozen sensor can cause this code
4With diagnostic equipment, read the engine temperature after starting and see whether it rises in step with warm-up
5Have a workshop replace the coolant thermostat or the temperature sensor if the fault remains

Symptome, die Sie bemerken können2

Malfunction indicator lamp (MIL) on
The engine is hard to start

Was der Fehler beeinflussen kann3

Boost pressure is set to a basic value
The coolant temperature is calculated instead of measured, and catalytic converter heating, starting adaptation, and idle and misfire diagnostics are disabled
The electric cooling fan runs at a predefined speed

Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.