VOLVO
ECM-21AD - Long-term fuel trim load, bank1. Lower limit
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
4 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (9)
- Volvo C30 (2007–2013)2007Nur Motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Nur Motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Nur Motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Nur Motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo S40 (2004–2013)2008Nur Motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Nur Motor: B5254T7
- Volvo V50 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Nur Motor: B5254T7
Was bedeutet der Fehlercode?
Although the code is named for a lower limit, the condition is that the long-term correction of the fuel mixture has nearly reached its maximum at both lower and upper part load. The cause can be an intake leak, high fuel pressure, leaking injectors, the mass air flow sensor, the engine oil or a damaged oxygen sensor.
Mögliche Ursachen
- Air leakage in the intake system
- High fuel pressure
- Leaking injectors
- Damaged mass air flow sensor
- Contaminated engine oil or oil level too high
- Damaged heated oxygen sensor
Was Sie tun können
- 1Check the intake system for air leakage
- 2Compare the oil level with the dipstick marks and look at the oil for contaminants
- 3Look for fuel leaks at the fuel lines and the injectors
- 4Have a diagnostic tool? Read the long-term fuel trim in live data during a test drive, and see whether it sits close to an extreme position
- 5If the fault remains, have a workshop measure the fuel pressure, check the injectors and replace the oxygen sensor if needed
Symptome, die Sie bemerken können1
- The malfunction indicator lamp (MIL) comes on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.