What is the AC Compressor Failure (Wrong Oil) problem on a 2020 Mitsubishi Outlander PHEV (GG)?

Common Problems with the
2020–2021 Mitsubishi Outlander PHEV (GG)

We've identified 1 known issue that can affect the 2020–2021 Mitsubishi Outlander PHEV (GG). 1 of these are serious faults that could be expensive to repair.

Known Issues

Serious

Moderate

Minor

The 2020–2021 period has an average number of reported issues compared to other Mitsubishi Outlander PHEV (GG) year periods.

All Known Issues

AC Compressor Failure (Wrong Oil)

SeriousElectrics & Electronics

The electric compressor requires specialized POE oil. Using standard PAG oil during a regas will destroy the internal motor.

Estimated cost: £1,000–£3,000Affects: 2014–2021

Typical symptoms

•AC not cooling
•Loud grinding noise when AC is on
•EV system fault light

What to inspect before you buy

✓Verify that any AC service used POE oil specifically
✓Check AC operation in both EV and Petrol modes

Buying Tips for the 2020 Mitsubishi Outlander PHEV (GG)

✓Check for the "BMU (Battery Management Unit) Reset" scam, where sellers reset the battery health to show 100% capacity temporarily. A real test drive starting with a full battery is essential.
✓Listen for a clicking noise from the rear motor on early models, which could indicate a mounting issue.
✓Verify the operation of the rapid charging port (CHAdeMO) if you plan on using public chargers.
✓Check the electric heater operation in EV mode; it's a common failure point that is expensive to fix.

2019 Mitsubishi Outlander PHEV (GG)