VOLVO
ECM-400D - Three-way catalytic converter (TWC) efficiency, bank 1. Signal too low
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Dieser Fehlercode hat je nach Modell, Modelljahr oder Motor unterschiedliche Bedeutungen. Wählen Sie die Bedeutung, die für Ihr Fahrzeug gilt.
Gilt für folgende Modelle:
4 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- Misfiring
- Leakage in the intake system
- Leakage in the exhaust system
- Faulty fuel pressure
- Uneven compression
- Damaged catalytic converter
Was Sie tun können
- 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
Symptome, die Sie bemerken können1
- Malfunction indicator lamp is lit
Was der Fehler beeinflussen kann1
- Rear oxygen sensor control is switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.