Sveriges Volvoforum

Motorlampan började lysa idag, då satte jag i felkodsläsaren och de står: ECM-262A, Long-Term Fuel trim.

Vad menas med detta,vad borde det vara för fel?
LMM,Lamdasong? försökt at hitta något läkage men utan resultat...

Någon som kan hjälpa en "Okunnig"..

VIDA säger följande om felkoden ifråga:

Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from λ=1, the short-term fuel trim will compensate for this by adjusting the injection time so that λ=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-262A will be stored when the long-term trim must be adjusted almost to maximum in the idle range.

Substitute value
none

Possible source

Upper limit:
intake air leakage
exhaust system air leakage
defective heated oxygen sensor (HO2S)

Lower limit:
intake air leakage
high fuel pressure
leaking injectors
defective mass air flow (MAF) sensor
contaminated engine oil
oil level too high
defective heated oxygen sensor (HO2S)

Fault symptom[s]
none