MajorCommonCooling

Mitsubishi Outlander: PHEV Inverter Cooling Water Pump Failure

PHEV Inverter Cooling Water Pump Failure is a common cooling fault on the Mitsubishi Outlander on the 2013–2023 cars, and we rate it major. Putting it right costs $800 to $2,200 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 47 documented faults on the Mitsubishi Outlander.

Vehicle: Mitsubishi Outlander
Only on: plug-in
Years: 2013–2023
Fuel: hybrid
Gearbox: auto
System: Cooling

This page covers the Mitsubishi Outlander as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Mitsubishi Outlander faults47 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Water pump yet. We would rather show none than show a picture of a different part.

What goes wrong

The electric water pump responsible for cooling the inverter and motor electronics can seize or lose prime, causing the inverter to overheat. The vehicle drops into reduced-power mode or loses EV drive entirely. In severe cases the high-voltage system shuts down and the car cannot move under electric power. Mitsubishi issued a service campaign (Australian recall PRA 2018/17571) for affected 2013–2018 build dates covering pump replacement.

What you would notice

EV mode warning light illuminated on dash
Sudden loss of electric drive or severe power reduction
Inverter overheat warning message in instrument cluster
Vehicle enters limp mode on highway

How to check it

Where to look. Engine bay — inverter cooling loop, forward of the high-voltage battery tray

With ignition on, check for stored DTCs P0A93 or U0100.
Inspect the inverter coolant reservoir level and condition.
Listen for coolant pump operation when EV mode is selected.
Ask for evidence of the Mitsubishi cooling pump service campaign being completed.

Parts involved: Water pump.

What it costs to put right

$800 to $2,200 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has the Mitsubishi inverter cooling pump service campaign (PRA 2018/17571) been completed?”
“Has the inverter coolant been flushed and refilled at the recommended interval?”
“Are there any stored fault codes related to the inverter or EV system?”

Now check the Mitsubishi Outlander you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Mitsubishi Outlander buyer questions

Is phev inverter cooling water pump failure serious on a Mitsubishi Outlander?

We rate it major and common on the Mitsubishi Outlander. The electric water pump responsible for cooling the inverter and motor electronics can seize or lose prime, causing the inverter to overheat. The vehicle drops into reduced-power mode or loses EV drive entirely. In severe cases the high-voltage system shuts down and the car cannot move under electric power. Mitsubishi issued a service campaign (Australian recall PRA 2018/17571) for affected 2013–2018 build dates covering pump replacement.

How much does it cost to fix on a Mitsubishi Outlander?

$800 to $2,200 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Mitsubishi Outlander years are affected?

Our research records this fault on the 2013–2023 Mitsubishi Outlander. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

With ignition on, check for stored DTCs P0A93 or U0100. Inspect the inverter coolant reservoir level and condition. Listen for coolant pump operation when EV mode is selected. Ask for evidence of the Mitsubishi cooling pump service campaign being completed. Look here: Engine bay — inverter cooling loop, forward of the high-voltage battery tray