MajorCommonCooling

Toyota Camry: Hybrid Inverter Coolant Pump Failure (2AR-FXE / A25A-FXS)

Hybrid Inverter Coolant Pump Failure (2AR-FXE / A25A-FXS) is a common cooling fault on the Toyota Camry on the 2012–2016 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 54 documented faults on the Toyota Camry.

Vehicle: Toyota Camry
Engine: 2AR-FXE / A25A-FXS
Years: 2012–2016
Fuel: hybrid
Gearbox: cvt
System: Cooling

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

All Toyota Camry faults54 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 hybrid drive inverter on XV50 and XV70 Camry Hybrid uses a dedicated electric coolant pump separate from the engine cooling circuit. This pump is a common failure point — it operates continuously whenever the hybrid system is active and degrades with age. Pump failure causes the inverter to overheat, triggering hybrid system warning lights and a forced shutdown to limp mode. Some failures are abrupt; others are preceded by intermittent warning lights. The pump is an OEM Toyota part and replacement is straightforward in terms of access but the part cost is significant.

What you would notice

Hybrid system warning triangle illuminated on dashboard
EV mode unavailable or hybrid system enters limp mode
Inverter overheating warning on the multi-information display
Gurgling noise from the hybrid coolant circuit under the bonnet

How to check it

Where to look. Engine bay, hybrid inverter coolant circuit — small electric pump typically mounted near the inverter

Listen for the inverter coolant pump running when the car is switched on — it should be audible.
Inspect coolant level in the hybrid reservoir.
If a workshop inspection is possible: Connect a Toyota Techstream or compatible OBD-II scanner with hybrid capability and check for inverter temperature and coolant pump fault codes (P0A93, P0A78 range).

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 any hybrid system warning light appeared?”
“Has the inverter coolant pump been replaced?”
“Is the hybrid system functioning in full EV mode as expected?”

Now check the Toyota Camry 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.

Toyota Camry buyer questions

Is hybrid inverter coolant pump failure (2ar-fxe / a25a-fxs) serious on a Toyota Camry?

We rate it major and common on the Toyota Camry. The hybrid drive inverter on XV50 and XV70 Camry Hybrid uses a dedicated electric coolant pump separate from the engine cooling circuit. This pump is a common failure point — it operates continuously whenever the hybrid system is active and degrades with age. Pump failure causes the inverter to overheat, triggering hybrid system warning lights and a forced shutdown to limp mode. Some failures are abrupt; others are preceded by intermittent warning lights. The pump is an OEM Toyota part and replacement is straightforward in terms of access but the part cost is significant.

How much does it cost to fix on a Toyota Camry?

$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 Toyota Camry years are affected?

Our research records this fault on the 2012–2016 Toyota Camry. 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?

Listen for the inverter coolant pump running when the car is switched on — it should be audible. Inspect coolant level in the hybrid reservoir. If a workshop inspection is possible: Connect a Toyota Techstream or compatible OBD-II scanner with hybrid capability and check for inverter temperature and coolant pump fault codes (P0A93, P0A78 range). Look here: Engine bay, hybrid inverter coolant circuit — small electric pump typically mounted near the inverter