Traveller AC Compressor Shutting Off

My 2016 Peugeot Traveller with a diesel engine is giving me grief. The A/C compressor keeps shutting off, and the air con system refuses to switch on at all. I plugged it in, and there's an error stored in the memory. Any ideas? Mileage is sitting at 206636 km. Could it be a simple refrigerant leak or maybe the pressure sensor?

4 comment(s)

I had a similar experience with my Traveller, though I'm running the petrol engine. If the ECU detects an undervoltage situation, it might cut power to less critical systems, and the A/C is often one of the first to go. Before diving into refrigerant or sensor issues, have you checked your battery's health and the charging system's output? A weak battery or a failing alternator could be the culprit.

That's interesting, I hadn't considered the battery. Is there a specific way to check for undervoltage in the system? I have a multimeter, but I'm not entirely sure where to start probing.

Yes, a multimeter is sufficient for this task. Check the voltage at the battery terminals while the engine is running; it should be around 14V. Also, inspect the battery terminals and ground connections for corrosion. However, considering you're seeing a stored error, I would strongly recommend a diagnostic check by a qualified technician before you start replacing parts. It could be a faulty relay switch that is causing the undervoltage, but pinpointing it without the right equipment can be tricky and may end up costing you more in the long run. You might want to check for diagnostic codes with appropriate OBD-II scanner.

Thanks for the heads-up. I took it to the workshop, and you were spot on – it was an undervoltage issue! Turns out, the A/C compressor was indeed shut off as a result. They found a corroded connection that was causing a voltage drop. Repair cost me 240€, but at least it's fixed now.

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