What does fault code ECM-DA04 mean?

Diagnostic fault code details for ECM-DA04 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C30 (2007–2013)). Repair service at OBD Tuning.

VOLVO

ECM-DA04 - Vehicle speed- can signal not valid

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

3 models

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

Show models by year and engine (9)

What does this fault code mean?

The engine control module monitors the components and functions of the system. The fault code is set when the vehicle speed signal over CAN is wrong, for example when the signal from the brake control module is incorrect, or when a checksum error occurs. The emissions lamp lights when the code is stored.

Possible causes

Implausible speed value received from the brake control module (BCM)
Checksum error in the CAN signal

What you can do

1There is no separate fault-tracing for this code. Work in the module that sends the signal, which is the brake control module
2Read out the fault codes in the brake control module and fix them first
3Erase the code in the engine control module only after the root fault code is fixed and erased
4If you have a diagnostic tool: read the speed value in live data during a test drive and check that it follows the car's actual speed
5The brake control module governs ABS. If the brakes or ABS feel uncertain, do not drive the car; have a workshop check it

Symptoms you may notice1

The emissions warning lamp is on

General guidance for car owners. Diagnosis on the car can point to a different cause.