richardhoffmann1
Verso AC undervoltage error
Summary of the thread
A 2011 Toyota Verso diesel is experiencing a complete failure of the air conditioning system, with a diagnostic tool indicating an undervoltage error. Possible causes include refrigerant leaks, faulty relay switches, or a malfunctioning A/C compressor. The solution involved taking the vehicle to a mechanic, who identified the issue as a faulty A/C compressor and wiring problems related to the undervoltage, leading to a successful repair.
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4 comment(s)
richardhoffmann1 (community.author)
Good shout. I hadn't considered a refrigerant leak, I'll check that out. I've also been looking at the relay switch. Was it a leak in your case then? Or was it something else? It’s just odd that it's throwing an undervoltage error…
lisakaiser99
For me it was something else. I booked it in with a trusted mechanic, as I was getting nowhere fast myself. Turned out to be a faulty A/C compressor, after they checked all the usual suspects like refrigerant and the relay. Given the error code you mentioned, it might be best to take it to a workshop and get it properly diagnosed.
richardhoffmann1 (community.author)
Okay, thanks for the advice! I followed your suggestion and took it to my local garage. They ran a proper diagnostic and it turns out it was indeed the A/C compressor, along with some wiring issues due to the undervoltage. Cost me 240€ to get sorted. Cheers for pointing me in the right direction!
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TOYOTA
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VERSO
lisakaiser99
I had a similar problem with my Verso, though mine is a petrol engine. Same symptoms, A/C just quit. Did you check for refrigerant leaks? That's often the first thing to go. Also, have you had any electrical work done recently that might be related?