VOLVO
ECM-400D - Three-way catalytic converter (TWC) efficiency, bank 1. Signal too low
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:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Hva betyr feilkoden?
The engine control module has found that the efficiency of the catalytic converter on bank 1 deviates too much from normal, with the signal registered as too low. The code is set while driving under certain conditions. 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 and the exhaust system, for example at hoses, joints and gaskets
- 2Check whether there are codes for misfiring alongside this one, and deal with those first
- 3Check the spark plugs and ignition coils for damage and moisture, since misfiring can cause the same fault
- 4Have a workshop check fuel pressure, residual pressure and compression with diagnostic equipment
- 5If the fault remains after this: 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 oxygen sensor control is switched off
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