2013 Audi A7 doesn't crank/start.

[hangtenboy]

You are right! Picked up gauges from Auto Zone and hooked up last night to see 0 pressure on high and low side. Now to figure out whether I want to inject system with nitrogen and test for leaks or take it somewhere to find my issue. I’m going to do a good visual inspection of system today to see if I can find the culprit but I suspect it might be at the condenser somewhere since this car has some rough stuff at front bumper with grill and such

 

[Ziddywerks]

Check for rock chip in condenser as it was a common occurrence in these cars. Also check high pressure switch they are known for pissing freon straight through the switch.

 

[hangtenboy]

Found issue after putting system under pressure. There was a small crack at the bottom right corner. Ordered up new condenser that will be here on Tuesday. Didn’t see any other leaks throughout system. Sprayed soapy water on every connector, service ports, pipe, hose and fitting including the high pressure switch and no bubbles at all with 150 psi in system, so I’m pretty sure that’s the only issue. I’ll put system under vacuum for 30 mins after replacing condenser and let it sit for 30+ mins to make sure it holds vacuum. That’s what ScannerDanner told me to do! If this works, it’ll official be the first AC system I’ve ever repaired!

https://imgur.com/a/ZcGOQLl

 

[hangtenboy]

Ended up finding replacement condenser yesterday. System is holding pressure and also under vacuum. Still have that error for the sensor module under pressure. Is that something that won’t go away until the system is charged with actual refrigerant? I’m assuming yes, right?