Was bedeutet der Fehlercode ECM-0104?

Diagnose und Fehlercodedefinition für ECM-0104 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C70 (2006–2013)). Steuergerätereparatur bei OBD Tuning.

VOLVO

ECM-0104 - Mass air flow (MAF) sensor. Signal missing

System

Motorsteuergerät (ECM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

4 Modelle

C30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)

Modelle nach Baujahr und Motor anzeigen (10)

Was bedeutet der Fehlercode?

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.

Mögliche Ursachen

Air leakage in the intake system
Looseness, contact resistance or oxidation in the connections
Damaged mass air flow sensor

Was Sie tun können

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

Symptome, die Sie bemerken können1

Check engine lamp lights up or behaves abnormally

Was der Fehler beeinflussen kann1

A calculated air mass is used instead of the measured value

Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.