What does fault code ECM-1408 mean?

Diagnostic fault code details for ECM-1408 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C30 (2007–2013)). Repair service at OBD Tuning.

VOLVO

ECM-1408 - EGR control. Faulty signal

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 (13)

What does this fault code mean?

The engine control module (ECM) compares intake pressure with EGR control active and inactive. If the pressure does not change enough when EGR control is active, the fault is set. It can be caused by the EGR valve being stuck open, a blocked exhaust system or a damaged control to the EGR valve.

Possible causes

EGR valve stuck in the open position
Blocked exhaust system
Damaged control of the EGR valve

What you can do

1Read the fault code, clear it and test drive to see whether it returns
2Check that the exhaust system is not clogged or damaged, so the exhaust gases can flow freely
3Check that the EGR valve is not stuck by soot and dirt, since that can cause the fault
4Check the wiring and connectors to the EGR valve for chafing, breaks and contact resistance
5If you have a diagnostic tool: activate the EGR valve at idle and check that the intake pressure changes clearly; if it does not, the valve may be stuck
6If none of this gives a fault: have a workshop check the EGR valve and its control

Symptoms you may notice2

Engine warning lamp comes on
Rough idle

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