VOLVO
ECM-258C - Front heated oxygen sensor (HO2S), bank 2. Signal too high
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleS80 (1999–2006), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
The engine control module (ECM) detects that the signal wires to the oxygen sensor on bank 2 are shorted to supply voltage. Although the fault shows as a signal that is too high, the cause lies in the wiring or the sensor.
Mögliche Ursachen
- Signal wires shorted to supply voltage
- Damaged oxygen sensor on bank 2
Was Sie tun können
- 1Read the code, clear it and road test the car to see whether it returns
- 2Check that the connector at the lambda sensor is fully engaged and clean. No rust solvent spray or grease in the connector
- 3With the control module disconnected, use a multimeter to check that the signal wires have no contact with supply voltage
- 4Look for chafed spots on the wires where they may have touched a live wire or been pinched
- 5If the wiring is intact the sensor may be damaged; have a workshop check or replace it
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.