P26A8 on Toyota
Charge Air Cooler Performance
P26A8 on Toyota vehicles indicates charge air cooler performance. Au7o has documented this code across 1 Toyota model — most commonly on Prius V. 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. Typical repair costs on Toyota range from $250 to $800, depending on the specific model and root cause.
Common Causes of P26A8
- •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
P26A8 on Toyota by Model
Toyota Prius V(1 issue)
- Electric Water Pump Failure and Engine Overheating2012-2017
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.
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View P26A8 across all makes →Frequently Asked Questions
What does P26A8 mean on Toyota?▼
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. On Toyota specifically, this code is documented across 1 model.
What causes P26A8 on Toyota vehicles?▼
Common causes on Toyota: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P26A8 on a Toyota?▼
Repair costs on Toyota range from $250 to $800, depending on the specific model and root cause.
Which Toyota models have P26A8 documented?▼
Au7o has documented P26A8 on 1 Toyota model: Prius V.