VOLVO
ECM-401C - Three-way catalytic converter (TWC) efficiency, bank 2. Signal too high
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
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 (10)
- Volvo S60 (2001–2009)2005–2006Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S80 (1999–2006)2005–2006Kun motor: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo V70 (2000–2008)2005Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 XC / XC70 (2001–2007)2005Alle motorer unntatt: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Kun motor: B5244T4, B5254T2
- Volvo XC90 (2003–)2005–2006Kun 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 efficiency of the catalytic converter on bank 2 deviates too much, according to the engine control module. It compares the values from the rear and front oxygen sensors, and the code is set under certain driving conditions when the difference becomes too large. The cause may be misfiring, a leak, faulty fuel pressure, uneven compression or a damaged catalytic converter.
Mulige årsaker
- Misfiring
- Leakage in the intake system
- Leakage in the exhaust system
- Faulty fuel pressure
- Uneven compression
- Damaged catalytic converter
Hva du kan gjøre
- 1Look for leaks in the intake system hoses and in the exhaust system joints and gaskets
- 2Check the spark plugs for damage to the insulation, since misfiring can cause the same fault
- 3Have a workshop check fuel pressure, residual pressure and compression with diagnostic equipment
- 4Read the code and see whether it returns after a test drive
- 5If the fault remains: have a workshop try a new oxygen sensor and then a new catalytic converter
Symptomer du kan merke1
- Malfunction indicator lamp is lit
Hva feilen kan påvirke1
- Rear long-term fuel trim is disabled
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