opel astra j a13dte egr issue

[kospoz]

Hi all i am having issue with this egr.I have p0404-5b code.I checked the plug and i found that first pin must have 12v but the real is 4.34v.The strange is that after i put the ignition off volt is 12.what i have here?ecu problem?i think is edc17c19

[jodank]

Hi!
How you know on the pin1 should be 12V?
The dtc is for an egr out of calibration I think. That would mean the feedback signal is to high or to low-out of spec.
I saw such of problem on some vag cars.

What about the gnd wiring in the connector?
Do you checked for a good gnd?

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[kospoz]

yes i have checked the ground is ok.haynes-pro has diagram and i saw there for the pin 1

[kospoz]

if i had signal wire off must dtc was no signal is it right?

[jodank]

I'm not really understand your last post.
Can you pls reformulate your question?
Can you also post a picture about the wiring diagram you used?

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[kospoz]

in vw cars when i have a broken wire from signal i have dtc no signal.In opel is the same or i must check and signal wires?because i stopped to the pin 1.Yes i will upload

[jodank]

I got it.
Yes. The same as in Vw cars.
But your case is not a NO signal.
You probably have some voltage on the feed back wire but out of specification.
That could also be a mechanical problem inside the egr.

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[kospoz]

i can not copy the image

[kospoz]

i must took it out and clean and i hope this fix the problem thank you

[jodank]

Yea.
A good starting point is to check it mechanically too.

If you need any help pls let me know.
Drop a pm, you are welcome.

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