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Need help diagnosing a problem

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Old 09-14-2005, 07:20 AM
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Default Need help diagnosing a problem
On my way home yesterday I got a CEL. I will VAG the car later this week but the On-Board Diagnostic gave me the following codes. What does that mean? My AC is working fine.

18.1 Fresh air blower voltage, static

20.1 A/C compressor voltage not OK - static (Compressor remains off until voltage is greater than 10.8V for at least 25 seconds)

22.1 (F118) A/C Refrigerant High Pressure Switch, static open (Compressor remains off until switch closes)
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Old 09-14-2005, 07:33 AM
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what's your voltmeter reading?
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Old 09-14-2005, 08:03 AM
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~13.5V
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Old 09-14-2005, 08:36 AM
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Default My guess: high pressure switch contact problem, or voltage regulator, or alternator
There was a voltage drop, so AC got turned off.
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Old 09-14-2005, 11:55 AM
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Default the CEL turned itself off
I'm just going to wait and see if it comes back on before I do anything about it. The AC never stoped working so I'm not to concerned.
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