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Thread: 95 C280 AC Diagnostics

  1. #1
    Junior Member HoodStar's Avatar
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    95 C280 AC Diagnostics

    With more than 200K miles, Betsy has a few issues. Among them AC. Last year the compressor seized so I've replaced the drier, suction hose and expansion valve with new parts and the compressor was replaced with a used one.
    Had the system filled about 2 weeks ago and got cold air but the blower was not working. Replaced the blower with a used one which blows strong but now the air is no longer cold.
    I ran the diagnostics from the push button CCU and it appears, if I'm reading this correctly, the compressor is not engaging. The codes are posted below. Can anyone here help me decipher these codes and lend some insight as to what may be the issue.
    Thanks. Jay

    01 108
    02 93F
    03 166
    05 102
    06 183
    07 00 0
    08 450
    09 03
    15 HI
    20 02
    21 07 0
    22 00 0
    23 00 0
    50 10 0
    51 00
    52 00

  2. #2
    Senior Member
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    Looks like all your refrigerant leaked out. 07 is pressure in Bar and yours is reading 00 0
    1994 C280
    1996 C36
    2005 C55
    2013 Volvo XC60 R-Design
    1999 Porsche 911
    ......dang now I know where all my money went.

  3. #3
    Junior Member HoodStar's Avatar
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    Thanks sickness. I'll have a leak test done friday. If it's the evaporator Betsy may be done. Thanks again.

  4. #4
    Senior Member
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    If it turns out to be the evaporator I would try the sealants they have out on the market as you have nothing to lose at this point.
    1994 C280
    1996 C36
    2005 C55
    2013 Volvo XC60 R-Design
    1999 Porsche 911
    ......dang now I know where all my money went.

  5. #5
    Junior Member HoodStar's Avatar
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    Mar 2011
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    So the AC dude says there's a pinhole in the hose & quoted $200 to weld it. Think I'll just replace it with a used part for now & at least make it through the summer.

  6. #6
    Senior Member
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    I would strongly advise against any sealants. They clog up ac machines when evacuating your ac system. A new ac machine is roughly $4k.

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