What does fault code ECM-1335 mean?

Diagnostic fault code details for ECM-1335 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C70 (2006–2013)). Repair service at OBD Tuning.

VOLVO

ECM-1335 - EGR control. 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 fault concerns the EGR valve. The engine control module (ECM) monitors its function and, when needed, runs an adaption to check that the values are reasonable. If the adaption shows a fault, the fault is set and exhaust gas recirculation (EGR) is switched off. It can come from poor contact, or from a valve that is stuck by soot and dirt.

Possible causes

Play, contact resistance or oxidation in the connections to the EGR valve
Incorrect limit values during the EGR valve adaption
Damaged EGR position sensor

What you can do

1Read the fault code, clear it and test drive to see whether it returns
2Check the EGR valve connectors for play, contact resistance and oxidation
3Check that the EGR valve is not stuck by soot and dirt, for example by looking at whether the hoses are sooty
4Check the wiring to the EGR valve for breaks, chafing and shorts to ground or voltage
5After a repair the EGR valve must be adapted again, which a workshop does with diagnostic equipment
6If the connectors and wiring are fine: have a workshop check the EGR valve and its position sensor

Symptoms you may notice1

A text message appears in the display

What the fault can affect1

Exhaust gas recirculation (EGR) is switched off

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