VOLVO
ECM-721A - Immobilizer. Faulty signal
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
2 modeleS40 (2004–2013), V50 (2004–2013)
Pokaż modele wg rocznika i silnika (2)
Co oznacza ten kod błędu?
The immobilizer gets a faulty signal because the BCM's hardware serial number differs from the one saved in the ECM. The fault applies to the S40 (04-) and V50, and the starter cranks but the engine will not run.
Możliwe przyczyny
- The programmed hardware serial number in the engine control module does not match the hardware serial number in the brake control module (BCM)
Co możesz zrobić
- 1Read and note the code, clear it and switch the ignition on again to see whether it returns
- 2If you have a diagnostic tool: read the codes in the engine control module and see whether any other code is stored
- 3Has the brake control module or the engine control module been replaced recently? If so, their hardware serial numbers may differ
- 4Work on the brake control module (BCM) and its programming should be done by a workshop, as it controls the braking system
- 5If the fault remains, have a workshop with diagnostic equipment compare the numbers and program the engine control module if needed
Objawy, które możesz zauważyć1
- The starter cranks but the engine will not run
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.