VOLVO
ECM-0171 - Long-term fuel trim, bank 1.Signal too high
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 has become too lean according to the adaptive corrections, and the control module logs a fault when the corrections are too high. Possible causes include a damaged fuel pump or regulator, air entering the intake or vacuum system, a clogged fuel filter, or damaged injectors. A leak in the exhaust can also play a part.
Mulige årsaker
- Damaged fuel pump or fuel regulator
- Air leak in the inlet manifold
- Leak in the vacuum system
- Dirty fuel filter
- Damaged injectors
- Leak in the exhaust system
Hva du kan gjøre
- 1Read the fault code, clear it and road test to see whether it returns
- 2Check that the intake hose and the vacuum hoses are tight and not cracked
- 3With the engine warm, listen for exhaust leaks and look for soot at the joints
- 4If you have a diagnostic tool, read the fuel adaptation values in live data at warm idle. Consistently high values confirm a lean mixture
- 5Have a workshop with diagnostic equipment check fuel pressure, the fuel pump and the injectors
- 6A dirty fuel filter can cause too little fuel, so have a workshop replace it if needed
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) lit
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.