VOLVO
ECM-271A - Adaptive lambda control, bank 2 .Bottom limit
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerS80 (1999–2006), XC90 (2003–)
Hva betyr feilkoden?
The long-term correction for bank 2 sets how much fuel the ECM adds based on the oxygen sensor. When it reaches its lower limit, the mixture is too rich and the ECM has reduced the fuel as far as it is allowed.
Mulige årsaker
- Fuel pressure is too high
- Injectors that leak
- Faulty mass air flow sensor
- Contaminated engine oil
- Oil level is too high
Hva du kan gjøre
- 1Look at the oil level on the dipstick. It should sit between the marks and the oil should not feel diluted
- 2Have a workshop measure the fuel pressure and check the injectors, since high pressure and leakage give a rich mixture
- 3Have a workshop check the mass air flow sensor, since a defective sensor can give the wrong fuel quantity
- 4If you have diagnostic equipment, read the bank 2 long-term correction with the engine running and see whether the value is steady
Symptomer du kan merke1
- No noticeable symptoms for the driver
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