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AC problem w code and readings

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Old 07-10-2014, 02:12 PM
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2000 CLK430
AC problem w code and readings

Blowing hot after fixing the panel. The great local indy here says new compressor and clutch but wanted to get your thoughts.

I have a 1232 refrigerant pressure sensor error and my readings are as follows.

1 113
2 142
3 107
4 106
5 104
6 198
7 38
8 116
9 0
10 .8

20 19.0
21 6
22 0
23 0
24 14.2
40 8
41 5
42 200
43 14

Any thoughts? Read where I could bypass the pressure sensor and that may work. How would one do that?

Last edited by tgfny; 07-11-2014 at 12:11 PM.
Old 07-10-2014, 11:48 PM
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2000 CLK430, 2012 BMW X5 3.5d
First try to clear the code by pressing and holding both AUTO buttons for about 5 seconds. Restart the car - compressor may kick just enough to get a reading of the number 7 diag. This will determine if the compressor is pumping enough to get a bar reading in the 12-13 range.

You will need to have the sensor replaced to get the compressor to run. I don't think you can just jump it - but I may be wrong. Its digital so the reading will trip the computer if out of range. Yes the system has to be evac'd to get a new sensor installed at the drier.

The indy thinks you need a new compressor because it can't kick on because the code. Unfortunately unless it can be jumped or you can get a quick reading before it kicks out the only way to get a proper diag is to replace the sensor - get it regassed and then check the compressor. Kind of a pain - but they should have done this before determining that a compressor is in order.
Old 07-11-2014, 12:58 AM
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2002 CLK430
The bad pressure sensor explains the 38 reading for #7. I'd look into swapping that first.
Old 07-11-2014, 12:09 PM
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Originally Posted by stim141
First try to clear the code by pressing and holding both AUTO buttons for about 5 seconds. Restart the car - compressor may kick just enough to get a reading of the number 7 diag. This will determine if the compressor is pumping enough to get a bar reading in the 12-13 range.

You will need to have the sensor replaced to get the compressor to run. I don't think you can just jump it - but I may be wrong. Its digital so the reading will trip the computer if out of range. Yes the system has to be evac'd to get a new sensor installed at the drier.

The indy thinks you need a new compressor because it can't kick on because the code. Unfortunately unless it can be jumped or you can get a quick reading before it kicks out the only way to get a proper diag is to replace the sensor - get it regassed and then check the compressor. Kind of a pain - but they should have done this before determining that a compressor is in order.
Forgot to put had already cleared the codes. Cleared the codes again, got the d ff, turned it on and it still read 38 on the pressure. Reran it and the 1232 error was back.


Thank you so much for y'all's help.

Is this the correct part?

https://www.autohausaz.com/search/pr...ssure%20Switch

Last edited by tgfny; 07-11-2014 at 12:23 PM. Reason: New info
Old 07-11-2014, 05:36 PM
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2002 CLK430
yea, you're either way overcharged or that sensor is bad.
Old 07-14-2014, 11:36 AM
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https://www.autohausaz.com/search/pr...ssure%20Switch

Correct replacement?

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