Prius AC compressor failure

Hey, my 2002 Toyota Prius hybrid's AC compressor just quit. Air conditioning system does not switch on, and it's blowing warm air. I scanned for errors and there's something stored in the error memory. Anyone seen this before?

4 comment(s)

I had a similar problem with my Prius, though I don't know about the specific error code you're getting. Check the AC relay first; that's an easy swap. Also, look at the pressure switch. If the refrigerant is low due to a leak, the switch will prevent the compressor from engaging to protect it. Is it only triggering at high revs or not at all?

Where exactly is the AC relay located? And how would I check the pressure switch? I'm not very experienced with HVAC systems.

The AC relay is usually in the main fuse box under the hood; check your owner's manual for the exact location. As for the pressure switch, a visual inspection for any signs of refrigerant leaks around the AC lines and components is a good start, but that's not a perfect test. Honestly, for a proper diagnosis of the HVAC system, it might be best to take it to a workshop.

Thanks for the help! I took it to a workshop as you suggested. Turned out to be undervoltage causing the issue. Repair ended up costing 240€. All good now.

Join the discussion now: