What does fault code ECM-1202 mean?

Diagnostic fault code details for ECM-1202 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C70 (2006–2013)). Repair service at OBD Tuning.

VOLVO

ECM-1202 - Fuel injection system driver. Signal missing

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 injection time for the injector valve on cylinder 2 has been wrong. The engine control module monitors the injector output stages, and when the time does not match the code is set. The last digit of the code gives the cylinder, here cylinder 2.

Possible causes

Contact resistance, oxidation or poor contact in the connections
Open circuit in the signal cable (+)
Open circuit in the signal cable (-)
Damaged injector

What you can do

1Clear the code, road test and see whether it returns
2Check the connector on the cylinder 2 injector for play, contact resistance and oxidation
3Use a multimeter to check that the two wires to the injector are not broken and have no short to ground or supply voltage
4If the fault returns and nothing is found, have a workshop replace the cylinder 2 injector if needed

Symptoms you may notice2

The engine lacks power and runs poorly
A message and a warning symbol appear in the display

What the fault can affect2

Engine speed is limited
The car can be driven in limp-home mode

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