VOLVO
ECM-4801 - Three-way catalytic converter (TWC) efficiency. Permanent 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:
10 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), XC90 (2003–)
Vis modeller per årsmodell og motor (26)
- 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)2002Kun motor: B5204T5, B5234T3, B5234T7, B5244T3
- Volvo S60 (2001–2009)2003Kun motor: B5204T5, B5234T3, B5234T7, B5244T3, B5254T2
- Volvo S60 (2001–2009)2004Kun motor: B5204T5, B5234T3, B5234T7, B5254T2, B5254T4
- 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)1999Kun motor: B5204T3, B5204T4
- Volvo S80 (1999–2006)2000Kun motor: B5204T3, B5204T4, B5204T5, B5234T7
- Volvo S80 (1999–2006)2001–2002Kun motor: B5204T5, B5234T7, B5244T3
- Volvo S80 (1999–2006)2003Kun motor: B5204T5, B5234T7, B5244T3, B5254T2
- Volvo S80 (1999–2006)2004Kun motor: B5204T5, B5234T7, B5254T2
- 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)2001–2002Kun motor: B5204T5, B5234T3, B5234T7, B5244T3
- Volvo V70 (2000–2008)2003Kun motor: B5204T5, B5234T3, B5234T7, B5244T3, B5254T2
- Volvo V70 (2000–2008)2004Kun motor: B5204T5, B5234T3, B5234T7, B5254T2, B5254T4
- Volvo V70 XC (1998–2000)1999–2000
- Volvo V70 XC / XC70 (2001–2007)2001–2002
- Volvo V70 XC / XC70 (2001–2007)2003–2004Alle motorer unntatt: D5244T
- Volvo XC90 (2003–)2003–2004Kun motor: B5254T2
Hva betyr feilkoden?
The efficiency of the catalytic converter on bank 1 deviates too much, and the fault is still present when you read the code. The engine control module compares the signals from the oxygen sensors to check the converter, and the code is set when the deviation is too large.
Mulige årsaker
- Misfiring in the engine
- Air leak in the intake system
- Air leak in the exhaust system
- Incorrect fuel pressure
- Uneven compression in the engine
- Defective catalytic converter
Hva du kan gjøre
- 1Read off and note the fault code, erase it and check whether it comes back straight away
- 2Check the intake system for air leaks such as cracks or loose hoses
- 3Look at the exhaust system for leaks at joints and seams
- 4A compression test and a check of fuel pressure need measurement, so have a workshop carry them out
- 5If none of this finds the cause, have a workshop decide whether the catalytic converter should be replaced
Symptomer du kan merke1
- Emissions warning lamp (MIL) lit
Hva feilen kan påvirke1
- Control of the rear oxygen sensor is switched off
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.