VOLVO
ECM-0104 - Mass air flow (MAF) sensor. Signal missing
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 (10)
- Volvo C30 (2007–2013)2007Kun motor: D4204T
- Volvo C30 (2007–2013)2008–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
- Volvo C70 (2006–2013)2008Kun motor: D4204T
- Volvo C70 (2006–2013)2009–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
- Volvo S40 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo S40 (2004–2013)2007Kun motor: D4204T
- Volvo S40 (2004–2013)2008–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
- Volvo V50 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo V50 (2004–2013)2007Kun motor: D4204T
- Volvo V50 (2004–2013)2008–2010Kun motor: D4204T · Kun girkasse: MMT6, MPS6
Hva betyr feilkoden?
Although the code is named signal missing, the MAF sensor's reading is erratic or unreasonable. The engine control module (ECM) keeps watch on the signal and stores the code when it does not add up. The cause can be an air leak in the intake, poor contact or a damaged MAF sensor.
Mulige årsaker
- Air leakage in the intake system
- Looseness, contact resistance or oxidation in the connections
- Damaged mass air flow sensor
Hva du kan gjøre
- 1With the ignition off, check the intake for air leaks, for example at hoses and connections
- 2Check the connector to the mass air flow sensor for looseness, contact resistance and oxidation
- 3Check that the fuse for the mass air flow sensor circuit is intact
- 4Use a multimeter to check that the signal wire does not break intermittently when you move the harness, and has no short to ground or supply voltage
- 5If the fault returns after erasing codes and a test drive although the leaks and connectors are sound, have a workshop replace the mass air flow sensor
Symptomer du kan merke1
- Check engine lamp lights up or behaves abnormally
Hva feilen kan påvirke1
- A calculated air mass is used instead of the measured value
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