VOLVO
ECM-21FB - Long-term fuel trim, bank 2. Signal missing
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 fault concerns fuel adaptation on bank 2, even though the code is named signal missing. It is only set once an underlying adaptation code has been stored in two consecutive driving cycles, and it is always present together with one of them.
Mögliche Ursachen
- Consequential fault from an underlying fault code for adaptive lambda regulation on bank 2
Was Sie tun können
- 1Start by fixing the root fault among the bank 2 adaptation codes, since this code has no fault-tracing of its own
- 2Have a diagnostic tool? Read the codes and see which bank 2 adaptation codes are stored next to this one
- 3Clear the code only after the underlying faults are fixed, and road test to check that it does not return
Symptome, die Sie bemerken können1
- The engine warning lamp comes on or behaves abnormally
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.