VOLVO
ECM-1804 - Boost pressure sensor. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerS40 (1996–2004), V40 (1996–2004)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
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.
Mulige årsaker
- Defective boost pressure sensor
Hva du kan gjøre
- 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
Symptomer du kan merke1
- The engine feels sluggish
Hva feilen kan påvirke1
- The control module uses a fixed value for boost pressure
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