VOLVO
ECM-233D - Rear 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) controls the heating of the rear oxygen sensor on bank 2. The code is set when the signal is too low while heating is switched off. The signal wire may be in contact with ground, and a damaged sensor can also set the code.
Mögliche Ursachen
- Signal wire short-circuited to ground
- Damaged oxygen sensor
Was Sie tun können
- 1Read and clear the code, then road test to see whether it returns
- 2Inspect the signal wire for chafing or spots where it may have touched the body
- 3With the sensor connector unplugged, use a multimeter to check whether the signal wire is in contact with ground
- 4If you have a diagnostic tool: see whether the sensor signal sits low and does not move while the engine runs
- 5If the fault remains, have a workshop decide whether the sensor should be replaced
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) lit
Was der Fehler beeinflussen kann1
- Lambda control is switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.