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Gavin Perry
Gavin Perry, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 2143
Experience:  Licensed diagnostic and repair technician
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Yellow engine light has come on, No it was only serviced

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Yellow engine light has come on
JA: Has your vehicle stalled? Has anyone run a diagnostic test to pull the trouble code?
Customer: No it was only serviced last month 3 year service
JA: What is the model/year of your Mercedes?
Customer: 2018 C Class estate
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: diesel
JA: Is there anything else the Mechanic should know before I connect you? Rest assured that they'll be able to help you.
Customer: Only done 2000 miles in between last 2 services

Hi my name is ***** ***** am here to assist you Today since the light has come on how is the drivability of your Mercedes.

Customer: replied 6 days ago.
Absolutely fine

Two options then you could buy an OBD2 code reader and see what codes are stored see image it could be an easy fix or take it to a workshop for a full diagnostic.

If you get an OBD2 code reader if you give me the trouble code that is stored i can further assist you with that just get back to me on this thread.

Customer: replied 6 days ago.
OK thanks

Talk soon if you need me regards Gavin.

Customer: replied 6 days ago.
Hi Gavin the error is a P229F - Powertrain

Morning possible NOX sensor issue have you cleared the code and gone for a test drive.

Customer: replied 5 days ago.
no I will try that today and let you know.

Keep me posted.

Customer: replied 5 days ago.
ok tried to clear a couple of times using the clear ecu option on the odb2 device but warning light still there

OK worth a try have you got any Bosch approved independents near you let me know

Customer: replied 5 days ago.
Yep Howard's garage is closest in Mirfield

Perfect avoiding the main dealers.

Customer: replied 5 days ago.
book it in with them?

Yes they will sort it out.

Gavin Perry and other Mercedes Specialists are ready to help you
Customer: replied 5 days ago.
ok thanks