VOLVO
ECM-0172 - Long-term fuel trim, 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:
3 modellerC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (3)
Hva betyr feilkoden?
Fuel trim on bank 1 is below the set value, so the fuel-air mixture is too rich, and the control module logs a fault when the deviation becomes too large. Possible causes include a blocked air intake, damaged injectors, or leaks in the exhaust or vacuum system.
Mulige årsaker
- Blocked inlet manifold
- Damaged injectors
- Leak in the exhaust system
- Leak in the vacuum system
Hva du kan gjøre
- 1Read the fault code, clear it and road test to see whether it returns
- 2Check that the air intake and inlet pipe are not blocked by dirt or debris
- 3With the engine warm, listen for exhaust leaks and check the vacuum hoses for cracks and loose connections
- 4With a diagnostic tool, check the fuel adaptation in live data when warm. A value that stays constantly low confirms the fault
- 5Have a workshop with diagnostic equipment check the injectors for function, damage and leaks
- 6After the repair the adaptations may need resetting, which a workshop does with diagnostic equipment
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) lit
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.