VOLVO
ECM-288A - Front heated oxygen sensor (HO2S), bank 1. Signal missing
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleS40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
Although the code is named signal missing, it is set when the front oxygen sensor on bank 1 reacts too slowly when the fuel and air mixture changes. The control module monitors the aging of the sensor, and the cause may be a wiring fault such as a short between the calibration and pump current cables, or an open circuit.
Mögliche Ursachen
- Calibration and pump current cables shorted to each other
- Open circuit in the signal cable (-)
- Open circuit in the calibration current cable
- Damaged front oxygen sensor
Was Sie tun können
- 1Do not use rust solvent or grease on the sensor connector. Check that the connector is secure and free from contact resistance and oxidation
- 2With the car switched off, use a multimeter to check the wires one at a time for an open circuit
- 3Use a multimeter to check that the calibration and pump current wires are not shorted to each other
- 4If the connector and wires are in order but the fault remains, have a workshop fit a new oxygen sensor
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) lit
Was der Fehler beeinflussen kann1
- Catalytic converter diagnostic is switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.