ECM-4201 - Three-way catalytic converter (TWC) efficiency. Power deterioration
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:
7 ModelleC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Modelle nach Baujahr und Motor anzeigen (18)
- Volvo C70 Cabriolet (1998–2005)2000Nur Motor: B5244S
- Volvo C70 Coupé (1998–2002)1999Nur Motor: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Nur Motor: B5244S
- Volvo S60 (2001–2009)2001–2002, 2009Nur Motor: B5244S, B5244S2
- Volvo S60 (2001–2009)2003–2005Nur Motor: B5244S, B5244S2, B5244S6, B5244SG, B5244SG2
- Volvo S60 (2001–2009)2006Nur Motor: B5244S, B5244S2, B5244S6, B5244SG
- Volvo S60 (2001–2009)2007–2008Nur Motor: B5244S, B5244S2, B5244SG
- Volvo S70 (1997–2000)1999Nur Motor: B5254S DENSO
- Volvo S70 (1997–2000)2000Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)1999–2000Nur Motor: B5244S, B5244S2
- Volvo S80 (1999–2006)2001, 2006Nur Motor: B5244S, B5244S2, B5244SG
- Volvo S80 (1999–2006)2002–2005Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (1997–2000)1999Nur Motor: B5254S DENSO
- Volvo V70 (1997–2000)2000Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2001, 2007–2008Nur Motor: B5244S, B5244S2, B5244SG
- Volvo V70 (2000–2008)2002Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2003–2005Nur Motor: B5244S, B5244S2, B5244S6, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2006Nur Motor: B5244S, B5244S2, B5244S6, B5244SG
Was bedeutet der Fehlercode?
After start-up the engine control module tests the catalytic converter's efficiency by alternating between rich and lean mixture and seeing how quickly the rear oxygen sensor reacts. If the sensor switches too quickly, the module interprets this as the catalytic converter having deteriorated. The fault can come from exhaust gas leakage, damaged fuel injectors or a damaged catalytic converter.
Mögliche Ursachen
- Air leak in the exhaust system
- One or more damaged fuel injectors
- Damaged catalytic converter
Was Sie tun können
- 1Check the exhaust system for air leaks at joints and connections
- 2Repair any leak found and clear the fault code
- 3On some engines from model year 2001 to 2002, all fuel injectors should be replaced if the fault remains; have a workshop do this
- 4Have you got a diagnostic tool: watch in live data how the rear oxygen sensor switches while the engine runs under even load
- 5Have a workshop replace the catalytic converter if the fault remains after the other checks have been made
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) is on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.