VOLVO
ECM-130B - Mass air flow (MAF) sensor. Signal too low
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 (8)
- Volvo C30 (2007–2013)2007–2011Kun motor: B5244S4
- Volvo C70 (2006–2013)2006Alle motorer unntatt: B5254T3
- Volvo C70 (2006–2013)2007–2010Kun motor: B5244S4, B5244S5
- Volvo C70 (2006–2013)2011Kun motor: B5244S4
- Volvo S40 (2004–2013)2004Kun motor: B5244S4, B5244S5
- Volvo S40 (2004–2013)2005–2010Kun motor: B5244S4, B5244S5, B5244S7
- Volvo V50 (2004–2013)2004Kun motor: B5244S4, B5244S5
- Volvo V50 (2004–2013)2005–2010Kun motor: B5244S4, B5244S5, B5244S7
Hva betyr feilkoden?
The fault concerns the MAF sensor circuit, which the engine control module (ECM) monitors. It is set when the module detects a short to ground or voltage in that circuit, or an open circuit. Although the code is labelled too low, a short to voltage can set it as well.
Mulige årsaker
- Signal wire shorted to ground
- Open circuit in the signal wire
- Signal wire shorted to voltage
- Damaged MAF sensor
Hva du kan gjøre
- 1Read the fault code, clear it and test drive to see whether it returns
- 2Watch the MAF reading in live data with the engine running; a reading that is wrong at the moment points to a permanent fault, a correct one to a sporadic fault
- 3Check the MAF sensor connector for contact resistance and oxidation
- 4Check the MAF wiring for chafing, pinch damage and loose clips
- 5With a multimeter, check that the signal wire has no contact with ground or voltage and that it has no break
- 6If the wiring looks fine: have a workshop check the MAF sensor
Symptomer du kan merke2
- Engine warning lamp comes on
- Engine feels jerky
Hva feilen kan påvirke1
- The value is worked out from engine speed and intake pressure instead of being measured
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