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Home >> Audi >> 2016 >> S4 Premium Plus, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1578 (Heating & Air Conditioning (On Board Diagnostic)) >> 01 On Board Diagnostic (OBD) >> Read Measuring Value Block (function 08) >> Measuring value blocks from "001" to "010" >> Interpretation of compressor shutoff condition for display zones "1 to 4" of display group "002"

Interpretation of compressor shutoff condition for display zones "1 to 4" of display group "002"

WARNING: This page is about a different car, the 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • The numbers not listed (e.g. "13") are not assigned a compressor shutoff condition at present.
Display field Compressor shutoff condition code Meaning Malfunction cause/corrective action
1 to 4 0 Compressor on
  • No compressor shutoff condition detected
  1 * Compressor off
  • Pressure in refrigerant circuit has been or is too high
  • Ambient conditions under which pressure was last not OK
  2 Reduced compressor output
  • The relevant engine control module requests the operating and display module, Climatronic Control Module J255 to reduce the compressor output.
  • The operating and display module, Climatronic Control Module J255 regulates the current for the A/C Compressor Regulator Valve N280 to approx. 300 mA.
  • The engine control module has established that the torque for the air conditioner compressor must be reduced to the lowest level still possible for better acceleration or because of a malfunction in the engine management system.
  • Check DTC memory of engine control unit "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052.
Display field Compressor shutoff condition code Meaning Malfunction cause/corrective action
1 to 4 3 * Compressor off
  • Pressure in refrigerant circuit has been or is too low
  4 Compressor off
  • A fault preventing activation of the compressor has been entered in the DTC memory of the operating and display module, Climatronic Control Module J255.
  5 Compressor off  
   
  • Engine speed less than 300 RPM
  • Start engine
   
  • No engine speed detected
  • No information received via CAN-Bus comfort system
  • No engine speed signal output by engine control unit or Instrument Cluster Control Module J285
Display field Compressor shutoff condition code Meaning Malfunction cause/corrective action
1 to 4 6 Compressor off  
   
  • Compressor switched off by way of ECON button of operating and display module, Climatronic Control Module J255
  • Switch on compressor
   
  • After replacement of operating and display module, Climatronic Control Module J255, "Basic setting" was not performed
  7 Compressor off
  • Air conditioner switched off by way of Off button of operating and display module, Climatronic Control Module J255
  • Vehicle with no Air Quality Sensor G238
  • Air conditioner switched off by way of Minus button for Fresh Air Blower of operating and display module, Climatronic Control Module J255
  • Vehicle with Air Quality Sensor G238
  • Switch on air conditioner (e.g. by way of Auto button of operating and display module, Climatronic Control Module J255)
Display field Compressor shutoff condition code Meaning Malfunction cause/corrective action
1 to 4 8 Compressor off  
   
  • Vehicle with no Air Quality Sensor G238
  • Vehicle with Air Quality Sensor G238, however recirculated-air mode not requested by Air Quality Sensor G238 or "automatic air recirculation" function deactivated.
  • Measured ambient temperature less than 5 °C
  • Measured ambient temperature had been less than 2 °C and has not risen above 5 °C since
  • Ambient temperature less than 5 °C
  • Move vehicle into a heated area for checking
  • The Instrument Cluster Control Module J285 or the Fresh Air Intake Duct Temperature Sensor G89 is supplying incorrect values
  • Check the measured values of the Outside Air Temperature Sensor G17 (transmitted via CAN-Bus comfort system by Instrument Cluster Control Module J285) and the Fresh Air Intake Duct Temperature Sensor G89 (display group "010")
   
  • Vehicle with Air Quality Sensor G238, "automatic air recirculation" function activated and recirculated-air mode requested by Air Quality Sensor G238
  • Measured ambient temperature less than -8 °C
  • Measured ambient temperature had been less than -8 °C and has not risen above -5 °C since
  • Ambient temperature less than -5 °C
  • Ambient temperature less than 5 °C and engine cold
  • Move vehicle into a heated area for checking
  • The Instrument Cluster Control Module J285 or the Fresh Air Intake Duct Temperature Sensor G89 is supplying incorrect values
  • Check the measured values of the Outside Air Temperature Sensor G17 (transmitted via CAN-Bus comfort system by Instrument Cluster Control Module J285) and the Fresh Air Intake Duct Temperature Sensor G89 (display group "010")
Display field Compressor shutoff condition code Meaning Malfunction cause/corrective action
1 to 4 9 * Compressor off
  • Electrical Equipment voltage is or has been less than 9.5 V with engine running
  • Voltage dips in power supply to operating and display module, Climatronic Control Module J255 or to Instrument Cluster Control Module J285
  10 *  
  • Electrical Equipment voltage (at connector "D" contact "12") too low or fault in Ground (GND) connection to operating and display module, Climatronic Control Module J255 → Diagnostic Trouble Code (DTC) table 
NOTE:
  • Depending on the version of the operating and display module, Climatronic Control Module J255, code "9" or "10" is displayed for this compressor shutoff condition if the electrical system voltage is too low.
Display field Compressor shutoff condition code Meaning Malfunction cause/corrective action
1 to 4 11 * Compressor off
  • Engine temperature too high
  • The Instrument Cluster Control Module J285 has detected an excessively high engine temperature (coolant temperature greater than 118 °C) and transmitted this via the CAN-Bus comfort system to the operating and display module, Climatronic Control Module J255 →
  12 * Compressor off
  • Air conditioner compressor shutoff currently active (with display in zone "1")
  • Air conditioner compressor shutoff was active for more than 12 seconds (with display in zones "2", "3" or "4")
  • The engine control module has switched off the air conditioner compressor for a brief period (e.g. on vehicle acceleration)
  • The engine control module has switched off the air conditioner compressor because of a malfunction.
  • Check DTC memory of engine control unit "Guided Fault-Finding" Vehicle Diagnosis, Testing Info. System VAS5051B or Vehicle Diagnosis Service Syst. VAS5052.
  13 Not used at present  
Display field Compressor shutoff condition code Meaning Malfunction cause/corrective action
1 to 4 14 * Compressor off
  • In the course of the current driving cycle, the High Pressure Sensor G65 has supplied a pressure signal with a ratio greater than 87.5% (pressure too high) at least 30 times.
  • Loose contact in power supply or Ground (GND) connection to High Pressure Sensor G65
  • Loose contact in wiring between High Pressure Sensor G65 and operating and display module, Climatronic Control Module J255
  • Fault at High Pressure Sensor G65 or in refrigerant circuit
  • Problem with activation of Coolant Fan V7
  15 Compressor off
  • The temperature measured by the Evaporator Vent Temperature Sensor G263 is less than 2 °C (only displayed in zone "1")
  • The air temperature in the area of the evaporator is less than 2 °C
  • If activation of the A/C Compressor Regulator Valve N280 is OK, there is a malfunction in the refrigerant circuit → Refrigerant Circuit
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