VOLVO
ECM-0139 - Rear heated oxygen sensor (HO2S), bank 1. Slow control
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
3 modeleC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Co oznacza ten kod błędu?
The engine control module registers that the rear lambda sensor on bank 1 responds too slowly to changes in the fuel-air mixture and treats this as a fault. The usual reasons are poor contact in the connections or a worn sensor. The fault lights the lamp during driving.
Możliwe przyczyny
- Contact resistance and oxidation in the connections
- Damaged rear lambda sensor
Co możesz zrobić
- 1Read, note and clear the code, then road test
- 2Check the rear lambda sensor connector and the wire connection to the control module: is it fully engaged and free from oxidation?
- 3Clean oxidized contacts at the connector and make sure the locking tab engages properly
- 4If you have a diagnostic tool, watch the rear sensor value in live data while pressing and releasing the accelerator. A slow response confirms the fault
- 5If cleaning the contacts makes no difference, have a workshop with diagnostic equipment decide whether the rear lambda sensor should be replaced
Objawy, które możesz zauważyć1
- Malfunction indicator lamp (MIL) lit
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.