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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: UK Car
Satisfied Customers: 3952
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic Vehicles
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My 3.0 diesel Phaeton shows "Exhaust workshop" then Engine

Customer Question

My 3.0 diesel Phaeton shows "Exhaust workshop" then Engine Management symbol
JA: How old is the engine? And when was it last serviced?
Customer: Serviced 6 months age 120.000 miles
JA: What year is your Phaeton?
Customer: 2006
JA: Are you fixing your Phaeton yourself? What have you tried so far?
Customer: Garage gave 3 codes including EGR lambda symbol and one other which I cant remember. Cleaqring these codes and running it shoed only EGr.
JA: Anything else you want the mechanic to know before I connect you?
Customer: The EGR sensor has been changed but symbol ior EGR still shows nonfeasible value
Submitted: 1 year ago.
Category: UK Car
Expert:  Chad Farhat replied 1 year ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Expert:  Chad Farhat replied 1 year ago.

hey how are you

has the egr passages been cleaned, that is a common issue where they replace the egr but not clean the passages .

if he got a scanner and pull up fuel trims ,he can tell if that is the case ,also they can do a flow test on the egr system for low flow

if all that been done and still have egr code , then the exhaust is clogged up , also a scanner reading fuel trims can figure that out

if you get me those fuel trims at idle the long one s & short ones i cant tell you and be more accurate

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Expert:  Chad Farhat replied 1 year ago.

Please let me know if you need anything else on it, just reply back and we will continue

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Thank You
Chad Farhat
ASE Certfied Technician