My car seems to give me an error code every so often of Code 11 and Code 16, when ever I use the a/c. Anyone know what this is about?

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1990 190E 3.0L

Code in WHAT system?? The engine?

Code 11 in the engine is for air injection & code 16 is for EGR, all of those are operated by
the MAS relay system.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Yes the air injection system and sometimes the egr, but why does it happen when i use the a/c? and the funny thing is, its not really consistent. the other day i had the a/c on all day and no code.

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1990 190E 3.0L

Possibly the MAS is having internal processor issues & isn't performing properly.

It also turns on the A/C conpressor, as well as the air injection, and EGR change-over valve.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Is there a way to fix this?

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1990 190E 3.0L