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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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Error P203D and P205D, ADBLUE heater 74K I think. 2010

Customer Question

Error P203D and P205D
JA: How many miles are on the car? Do you have scan tool or a code reader?
Customer: ADBLUE heater 74K I think. 2010 GL350
JA: What is the model of your '10 Mercedes?
Customer: I see that there is a sensor replacement for 200 bucks instead of the complete heater replacement
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Took it to three mechanics all of which says to take to Dealer.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 7 months ago.
Category: Mercedes
Customer: replied 7 months ago.
I want to know the least expensive way to resolve this problem..
Expert:  Lou P. master tech replied 7 months ago.

Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

Expert:  Lou P. master tech replied 7 months ago.

usually when it comes to the adblue system there are only 2 fixes, software update or replace the part that threw the code. i will interrogate these codes with my scan tool and see what the possible remedies are. give me a few to do this, also what is your vin?

Expert:  Lou P. master tech replied 7 months ago.

may i have your vin please??

Expert:  Lou P. master tech replied 7 months ago.

I have the fault code descriptions and test steps ill send over an email offer so i can get these to you.