VOLVO
ECM-243C - Front heated oxygen sensor (HO2S), bank 1 heating. Signal too high
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:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Vis modeller per årsmodell og motor (12)
- Volvo S60 (2001–2009)2006Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2007Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2008–2009Kun motor: B5204T5, B5244T5, B5254T2
- Volvo S80 (1999–2006)2006Kun motor: B5204T5, B5254T2, B6294S2, B6294T
- Volvo V70 (2000–2008)2006–2007Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2008Kun motor: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2006Kun motor: B5244T4, B5254T2
- Volvo V70 XC / XC70 (2001–2007)2007Kun motor: B5254T2
- Volvo XC90 (2003–)2006Kun motor: B5254T2, B6294T
- Volvo XC90 (2003–)2007–2012Kun motor: B5254T2
- Volvo XC90 (2003–)2013–2014Kun motor: B5254T9
- Volvo XC90 (2003–)2015
Hva betyr feilkoden?
The engine control module (ECM) checks the heater circuit of the front oxygen sensor. It measures the current in the circuit and converts it to a temperature. If the resistance is unreasonably high, giving too low a temperature, the module treats this as a fault and sets the code.
Mulige årsaker
- Contact resistance and oxidation at the connections
- Damaged front heated oxygen sensor
Hva du kan gjøre
- 1Read the code, clear it and road test to see whether it returns
- 2Check the oxygen sensor connector for oxidation and loose connections. Do not use rust solvent spray or grease on the connector
- 3If you take readings, do it from the cable side of the connector so you do not damage it or create a future loose contact
- 4With a diagnostic tool, check the oxygen sensor temperature in live data on a warm engine. A value that stays low points to the connector or sensor
- 5If the connector is clean and the wiring intact, have a workshop with diagnostic equipment check the oxygen sensor and replace it if needed
Symptomer du kan merke1
- The malfunction indicator light (MIL) is on
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.