VOLVO
ECM-21AD - Long-term fuel trim load, bank1. Lower limit
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (9)
- Volvo C30 (2007–2013)2007Kun motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Kun motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Kun motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Kun motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo S40 (2004–2013)2008Kun motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Kun motor: B5254T7
- Volvo V50 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Kun motor: B5254T7
Hva betyr feilkoden?
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.
Mulige årsaker
- 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
Hva du kan gjøre
- 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
Symptomer du kan merke1
- The malfunction indicator lamp (MIL) comes on
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.