I have a 1998 C230 and I have a bad code 7 Refrigerant Pressure on the climate control and I'd like to check the sensor. Where is it, and how could I
check it and/or bypass it?

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5 speed '91 190E 2.6 270,000 mi. (new car, fast, smooth as silk six, couldn't find any more Peugeots)
5 speed '85 Peugeot 505 2.5l Turbo Diesel 266,000 mi. (old car, slow, had 2 others)
5 speed '01 Jetta V6 (new wifes car, pretty quick)
5 speed '85 Peugeot 505 2.2l Turbo Gas 197,000 mi. (wifes car, faster, sadly gone just short of 200k )
5 speed '83 Yamaha 750 Maxim 14,000 mi. (fastest)
0 speed 4' x 8' 1800 lb Harbor Freight utility trailer (only as fast as what's pulling it)

dont think you'd be able to bypass it.. AC wont work or you could fry out your compressor, Generally the pressure sensors on mercedes are on the Dryer but I dont know if they held to that tradition or not.

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Current Fleet
1987 300TD 300,000 miles Official 2/28/10 <Ip shot; Out of service>
1999 E300D 292,827 30.2MPG
2000 Ford Ranger sisters now
Past
74,80 450SL
84 300SD
86 300E
94 E320 Wagon
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Mine is on the drier (old W126), but this is not something that should be bypassed. It is like a "safety" on a commercial A/C system and is crucial to system operation.

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Simon Shearer

1986 420SEL
1997 SL500

2001 Victory V92 Deluxe 1500cc Cruiser
2007 Yamaha 1300cc Tourer (wife's)
2010 Lexus RX 350 (wife's)
2002 Kia Rio (for daughter #1)
2002 Hyundai Accent (for daughter #2)

W202 AC pressure sensor
MB# 1408300072


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"Red Green"
If the women don't find you handsome, they should at least find you handy.

Love that picture.

I talked with an AC guy and he said short term bypassing it should be ok. This would be just a test to isolate to the problem.