Hva betyr feilkode ECM-A20B?

Diagnose og feilkodedefinisjon for ECM-A20B (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C70 (2006–2013)). Bestill reparasjon hos OBD Tuning.

VOLVO

ECM-A20B - Engine control module (ECM). Signal missing

System

Motorstyring (ECM)

Volvo-modeller feilkoden gjelder for

Gjelder følgende modeller:

4 modeller

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

Vis modeller per årsmodell og motor (9)

Hva betyr feilkoden?

The central electronic module (CEM) sends a timer value over the CAN network that tells the modules how long the engine has been off since its last shutdown. The engine control module uses it, for example, when restarting a warm engine. The code is set when the engine control module finds the timer value wrong or missing, and the malfunction indicator lamp comes on.

Mulige årsaker

Fault in the central electronic module (CEM), which should be checked first
Open or short circuit in the CAN wiring between the engine control module and the CEM
Damaged central electronic module (CEM)

Hva du kan gjøre

1Read the fault codes in the CEM and in any other modules that may be involved, and note which are stored
2Remedy the faults in the CEM and the CAN network first; this code must not be cleared until the codes in the CEM and other affected modules are remedied and cleared
3Check the CAN wiring and connectors between the engine control module and the CEM for open circuits, short circuits and chafing
4After the repair, clear the code and start the car to see whether it returns

Symptomer du kan merke1

Malfunction indicator lamp (MIL) on

Hva feilen kan påvirke1

The engine control module calculates a timer value instead

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