VOLVO
ECM-1804 - Boost pressure sensor. Faulty signal
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleS40 (1996–2004), V40 (1996–2004)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
Before the engine starts, the ECM checks the boost pressure sensor against the atmospheric pressure sensor. If the pressure difference between the two is too large, fault code ECM-1804 is set, and the boost pressure sensor is then the most likely cause.
Mögliche Ursachen
- Defective boost pressure sensor
Was Sie tun können
- 1If you have a diagnostic tool: read the boost and atmospheric pressures with the ignition on, and check that the difference between them is not large
- 2Switch off the ignition and check the boost pressure sensor connector for play, contact resistance and oxidation, then reconnect it
- 3If the difference is still large with a sound connector, the boost pressure sensor is probably defective
- 4If the fault remains, have a workshop replace the boost pressure sensor
Symptome, die Sie bemerken können1
- The engine feels sluggish
Was der Fehler beeinflussen kann1
- The control module uses a fixed value for boost pressure
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.