P26A8 on 2012-2017 Toyota Prius V — Charge Air Cooler Performance
1 vehicles · 1 makes · $250-$800 repair
How to diagnose and fix P26A8: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Toyota Prius V · 2012–2017
The Prius V uses an electric water pump (like all Gen 3 Prius-based vehicles) rather than a belt-driven mechanical pump. The electric pump motor can fail without warning, causing rapid engine overheating. Unlike a belt-driven pump where you'd hear squealing before failure, the electric pump simply stops. The vehicle may overheat within minutes in traffic. Toyota issued a recall for some Prius models but Prius V coverage varies by production date.
Common Symptoms
- Engine temperature climbing rapidly with no warning
- Red engine temperature warning light
- No coolant circulation (heater blows cold with engine hot)
- Steam from under hood
- Engine entering limp mode and shutting down
How to Fix
Replace the electric water pump assembly (Toyota 161A0-29015). The pump is located on the lower-left side of the engine and is accessible without major disassembly. Replace the thermostat and flush the cooling system during the repair. Some owners carry a spare pump as a precaution since failure is sudden and strands the vehicle.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Toyota 161A0-29015 electric engine water pump assembly
replace a confirmed failed electric engine water pump and restore/bleed the engine cooling circuit Fitment/availability: 2012-2017 Prius v 1.8L 2ZR-FXE engine cooling circuit; replaces 161A0-39015 and is not the inverter coolant pump Fit…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipIf the temperature gauge starts climbing suddenly, pull over IMMEDIATELY and shut off the engine — the Prius V overheats extremely fast without the water pump
- WarningDo not continue driving with an overheating Prius V even for a few minutes — the aluminum engine warps heads rapidly and can require a full engine replacement
Find P26A8 by make
Browse every documented model and issue for your make.
P26A8 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P26A8 mean?
P26A8 stands for "Charge Air Cooler Performance." This code (often written P026A) indicates the charge air cooler, also called the intercooler, is not cooling the boosted intake air as efficiently as the computer expects. On turbocharged or supercharged engines the charge air cooler chills the hot, compressed air before it enters the engine, and the computer compares ambient, pre-cooler, and post-cooler air temperatures to judge its performance. When the calculated efficiency stays below threshold, this code sets. It usually means reduced power or efficiency rather than an immediate breakdown.
What are the most common causes of P26A8?
The most common causes of P26A8 are: Clogged, leaking, or damaged charge air cooler (intercooler), Leaking or loose intercooler/boost piping or couplers, Faulty charge air temperature sensor or wiring, Restricted airflow across the cooler (debris, oil fouling), Low coolant or failed pump on liquid-cooled intercoolers, Boost leak reducing pressure through the cooler, Heavy oil residue inside the cooler from blow-by. The specific cause varies by vehicle.
How much does it cost to fix P26A8?
Repair costs for P26A8 range from $250 to $800, depending on the vehicle and root cause.
Which vehicles are affected by P26A8?
Au7o has documented P26A8 across 1 vehicle models from 1 manufacturers: Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.