VOLVO
ECM-2A0A - Rear heated oxygen sensor (HO2S). Signal missing. Intermittent fault
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
9 modellerC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008), V70 XC (1998–2000), V70 XC / XC70 (2001–2007)
Vis modeller per årsmodell og motor (22)
- Volvo C70 Cabriolet (1998–2005)1999, 2001–2005
- Volvo C70 Cabriolet (1998–2005)2000Alle motorer unntatt: B5244S
- Volvo C70 Coupé (1998–2002)1999Alle motorer unntatt: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Alle motorer unntatt: B5244S
- Volvo C70 Coupé (1998–2002)2001–2002
- Volvo S60 (2001–2009)2001Alle motorer unntatt: B5244S, B5244S2, D5244T
- Volvo S60 (2001–2009)2002–2003Kun motor: B5204T5, B5234T3, B5234T7, B5244T3
- Volvo S60 (2001–2009)2004Kun motor: B5204T5, B5234T3, B5234T7
- Volvo S70 (1997–2000)1999Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5254T
- Volvo S70 (1997–2000)2000Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5244T
- Volvo S80 (1999–2006)1999–2000Alle motorer unntatt: B5244S, B5244S2, D5252T MSA 15.8
- Volvo S80 (1999–2006)2001Kun motor: B5204T5, B5234T7, B5244T3, B6284T, B6294S
- Volvo S80 (1999–2006)2002–2003Kun motor: B5204T5, B5234T7, B5244T3, B6294S2, B6294T
- Volvo S80 (1999–2006)2004Kun motor: B5204T5, B5234T7, B6294S2, B6294T
- Volvo V70 (1997–2000)1999Kun motor: B5204T3, B5204T4, B5234T3, B5234T7, B5234T8, B5254T
- Volvo V70 (1997–2000)2000Alle motorer unntatt: B5244S, B5244S2, B5244SG, B5244SG2, D5252T MSA 15.8
- Volvo V70 (2000–2008)2000Alle motorer unntatt: D5252T MSA 15.8
- Volvo V70 (2000–2008)2001–2003Kun motor: B5204T5, B5234T3, B5234T7, B5244T3
- Volvo V70 (2000–2008)2004Kun motor: B5204T5, B5234T3, B5234T7
- Volvo V70 XC (1998–2000)1999–2000
- Volvo V70 XC / XC70 (2001–2007)2001–2002
- Volvo V70 XC / XC70 (2001–2007)2003–2004Kun motor: B5234T7
Hva betyr feilkoden?
The signal from the rear oxygen sensor is missing, so the fault is set. The fault is intermittent, meaning it has occurred at some point but may not be present now. The cause may be an open circuit in the signal or ground wire, or contact resistance or oxidation in the connector.
Mulige årsaker
- Open circuit in the signal wire
- Open circuit in the ground wire
- Poor contact or oxide in the connector
Hva du kan gjøre
- 1Do not use rust solvent or grease on the sensor connector. Check that it is secure and clean, without play
- 2With the car switched off, use a multimeter to check that the signal and ground wires are not broken
- 3If you have a diagnostic tool: read the rear sensor signal in live data with the engine idling. A signal that is missing or irregular points to the sensor or wiring
- 4If the connector and wires are in order but the fault remains, have a workshop try a new rear oxygen sensor
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) lit
Hva feilen kan påvirke2
- Twin oxygen sensor control is switched off
- Catalytic converter diagnostics are switched off
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.