Renault Scenic 1.9dTi - check emissions warning | Technical matters | Back Room Forum

Tue 27 Sep 2011 22:41

Renault Scenic 1.9dTi - check emissions warning - Timmm

I have a continous "check emissions" warning but the car is running fine with no problems. My local indepedant garage ran a diagnostic check and came back with a code DF209 EGR Valve Position Circuit. As the car was running ok they just reset the warning, but it came back up after a couple of days. The garage say the next thing to do would be to change the EGR Valve but this would cost more than £300. As the car is running ok should I just ignore the warning or is there anything else I could try? I must have had this warning for almost a year now but it must be caused by some problem.

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Wed 28 Sep 2011 10:50

Renault Scenic 1.9dTi - check emissions warning - Fernando P

I suggest that you clean the EGR valve first.

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Sun 23 Oct 2011 00:06

Renault Scenic 1.9dTi - check emissions warning - Timmm

How would I do this?

From what I can see the engine is not very accessable.

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Sun 23 Oct 2011 08:23

Renault Scenic 1.9dTi - check emissions warning - Railroad.

The clue here is the fault code which is "DF209 EGR Valve Position Circuit". That to me suggests that the ECU is recognising a circuit fault on the EGR. The circuit could be open or short, which could be a broken wire, corroded pin, plug disconnected, a faulty EGR solenoid, or even a faulty ECU. You need to use diagnostic equipment to do an actuator test to operate the EGR and find out where the fault is.

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