What does fault code ECM-1552 mean?

Diagnostic fault code details for ECM-1552 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C70 (2006–2013)). Repair service at OBD Tuning.

VOLVO

ECM-1552 - Fuel injection system driver. Faulty signal

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

4 models

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

Show models by year and engine (10)

What does this fault code mean?

The engine control module (ECM) watches the output stages for the fuel injectors and reacts when the amount of fuel injected is too large. The last digit of the fault code shows that cylinder 2 is concerned.

Possible causes

Contact resistance or oxidation in the connections to the cylinder 2 injector
Open circuit in the signal wire (+) to cylinder 2
Open circuit in the signal wire (-) to cylinder 2
Damaged cylinder 2 injector

What you can do

1Switch off the ignition and check the connector to the cylinder 2 injector for play, contact resistance and oxidation
2Check that the wires to the cylinder 2 injector are not pinched, chafed or broken, and use a multimeter to confirm they are intact
3If you have a diagnostic tool: activate the cylinder 2 injector and see whether it responds
4Clear the code and test drive. If it returns although the wiring is intact, have a workshop replace the cylinder 2 injector

Symptoms you may notice3

Check engine light comes on or behaves abnormally
The engine lacks power
Warning symbol and a text message in the display

What the fault can affect2

Engine speed is limited
The car goes into limp home mode

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