VOLVO
ECM-233C - Rear 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) controls the heating of the rear oxygen sensor on bank 2. The code is set when the signal is too high while heating is active. The signal wire may have touched a supply voltage, or the sensor may be damaged.
Mögliche Ursachen
- Signal wire short-circuited to supply voltage
- Damaged oxygen sensor
Was Sie tun können
- 1Read and clear the code, then road test to see whether it returns
- 2Look for chafing and pinched wiring on the signal wire to the bank 2 sensor
- 3Check that the sensor connector has not taken in moisture or corrosion
- 4If you have a diagnostic tool: read the sensor signal in live data while the engine runs and see whether it sits too high
- 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.