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I have a 2006 Vito 115 CDI was all good then went in to limp

Customer Question
mode. Ran codes had 3...
I have a 2006 Vito 115 CDI was all good then went in to limp mode. Ran codes had 3. 1st code 2527-002 egr short to ground 2nd 2529-002 throttle valve actuator shorted to ground. 3rd code 2530-002inlet port shutoff switch over short to ground. I changed the egr same problem went for a drive 10 min in worked great. Next morning worked great until 20mins in drive back to limp mode. HAD SAME CODES. Only visible wire damage is the O2 sensor connector is burnt. Will change tomorrow I also have the inlet port switch but can't find where it's located. Any help will be appreciated
JA: Have you located all of the vehicle's oxygen sensors? Are the wires leading to and from each intact and in good shape?
Customer: All but 1
JA: What is the model of your '06 Mercedes?
Customer: vito
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Yes, replaced egr
JA: Anything else you want the mechanic to know before I connect you?
Customer: Location of the inlet port switch over
Submitted: 4 months ago.Category: Mercedes
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Answered in 2 days by:
7/26/2017
Mercedes Mechanic: Pete, Mercedes Mechanic replied 3 months ago
Pete
Pete, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 29,570
Experience: Over 15 years experience as a Mercedes dealer technician
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Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

Replace the O2 sensor connector and see if this resolves the fault as this may be shorting out the wiring to the other sensors as well.If this does not work then you will need to inspect the wiring leading to the components the codes are set for to locate any shorts to ground needing repaired.Most likely there is at least one wire that is shorted causing this fault here needing repaired.

If no wiring is found to be shorted and since you already replaced the egr it may be that the throttle actuator is shorted internally or inlet port motor shorted internally needing replaced causing all of these issues here.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

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Mercedes Mechanic: Pete, Mercedes Mechanic replied 3 months ago

Hi, just checking in to see how things are going. Do you need further assistance?

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