A4 (B6 Platform) Discussion Discussion forum for the B6 Audi A4 produced from 2002-2005

testing G65

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Old Jun 27, 2006 | 02:56 PM
  #1  
KennyBradley's Avatar
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Default testing G65

My car is a 2002 Audi a4 TDi 130hp.

Problem is I don't have a VAG-COM. I put my car to the local dealer who said he was getting a fault code indicating a short in the G65 sensor so he replaced it and advised I get the refrigerant recharged. Unfortunatley this didn't fix the problem and he was still getting the same fault code so he assumed the problem must be with the wiring to the G65 sensor but could be expensive to find.

So that is why I was trying to check the wiring myself.

Measuring the 3 wires On the sensor plug:

earth connection seems good
middle wire was reading 11v from the climate control unit? this sould be for sending the signal back?
I was getting no positive supply on the third terminal.

Can anyone offer any advice?

Cheers Kenny
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Old Jun 27, 2006 | 03:20 PM
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Default Lots of Turbo knowledge here, but not much Turbo Diesel....

assuming whatever a G65 is exclusive to a TDi engine.

You're out of warranty so I'd try and find a good VW/Audi/Seat/Skoda (all the same really !) independent. I know of two in the Thames Valley area.
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Old Jun 27, 2006 | 03:42 PM
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Default

Yeah, unfortunately we were never offered Audi TDI engines in North America.
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Old Jun 28, 2006 | 10:21 AM
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Default Re: testing G65

Thanks for the reply guys.

The G65 sensor is the high pressure sensor on the air con system, I assumed it was common to al B6 A4's?. My car is stuck in econ mode so I'm not getting any air conditioning.

Unfortunatley my location limits me to where I can go for help. That's why I'm trying to look into it myself.

Cheers Kenny
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Old Jun 29, 2006 | 12:58 PM
  #5  
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Default Problem solved

Looks like the problem's solved. There is a fuse for the power supply to the G65 sensor. That fuse must have blown when the old sensor shorted.

So problem is solved.

Thanks to Derek for your help.
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Old Jun 30, 2006 | 05:47 PM
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Default Re: testing G65

hi there my ECON button dosent want to turn off and there for isnt turning my compressor on, what became of your issue. Thank you
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