A8 Quattro Sedan V8-4.2L (BGK) (2006)
High Pressure Sensor / Switch: Service and Repair
Refrigerant Circuit
High Pressure Sensor
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Remove the radiator grille.
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Disconnect connector - A -.
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Remove the High Pressure Sensor (G65) - B - (tightening specification: 5 Nm).
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Replace O-ring-seal - C - (10.8 mm, 1.8 mm). Refer to=> [ Refrigerant Circuit O-Ring Seals ] See: Heating and Air Conditioning/Description and
Operation/Refrigerant Circuit O-Ring Seals.
‹› Cooling performance cannot be checked with High Pressure Sensor (G65) removed, front A/C control head Climatronic Control Module (J255)
does not switch on the compressor.
‹› There are different versions of the High Pressure Sensor (G65) different signals so make sure the allocation is correct. .
‹› Refrigerant circuit remains closed connection with valve.
‹› Checking function of High Pressure Sensor (G65) and signal sent. Refer to => [ High Pressure Sensor, Checking Signal ] See: Testing and
Inspection/High Pressure Sensor, Checking Signal.
‹› Lubricate O-ring seal lightly with refrigerant oil before installing. Refer to => [ Refrigerant Circuit O-Ring Seals ] See: Heating and Air
Conditioning/Description and Operation/Refrigerant Circuit O-Ring Seals.