VOLVO
ECM-258D - Front heated oxygen sensor (HO2S), bank 2. Signal too low
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 ground, which shows up as a signal that is too low. The code is then set.
Mögliche Ursachen
- Signal wires shorted to ground
- Damaged oxygen sensor on bank 2
Was Sie tun können
- 1Clear the code, road test the car and then check whether it comes back
- 2Look at the connector at the lambda sensor: it should be seated firmly and free from moisture and oxide. Avoid rust solvent spray and grease
- 3With the control module disconnected, use a multimeter to check that the signal wires have no contact with ground (chassis)
- 4Look for chafed and pinched spots on the wires, especially where they may have rubbed against an edge
- 5If the wires are intact but the fault remains, have a workshop check or replace the lambda sensor
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.