P26CA on Toyota
Engine Coolant Pump Control Circuit Malfunction
P26CA on Toyota vehicles indicates engine coolant pump control circuit malfunction. Au7o has documented this code across 1 Toyota model — most commonly on Camry. The ECM calculates required coolant flow from engine coolant temperature, engine speed, and vehicle speed, then commands the electric engine water pump accordingly and monitors its feedback. P26CA sets when that control circuit or feedback is wrong. Toyota's Tech Tip T-TT-0733-23 identifies the two sub-codes seen on A25A engines: P26CA14 'Engine Coolant Pump Circuit Short to Ground or Open' and P26CA31 'Engine Coolant Pump No Signal' (P26CA12 is short to battery). On A25A-FKS/FXS engines these codes commonly accompany a physical coolant leak from the water pump itself.
Common Causes of P26CA
- •Electric engine water pump internal failure
- •Coolant leaking from the water pump into the pump's electronics/connector
- •Open, short-to-ground, or short-to-battery in the water pump control circuit wiring
- •Corroded or water-intruded water pump connector
- •Blown fuse or ECM driver fault
P26CA on Toyota by Model
Toyota Camry(1 issue)
- A25A Engine Water-Pump Leak or P26CA Diagnosis (T-TT-0733-23)2022-2024
Toyota Tech Tip T-TT-0733-23 applies to some 2022-2024 Camry and Camry Hybrid vehicles with an A25A engine water-pump leak and/or an illuminated MIL with P26CA14 or P26CA31. Toyota asks technicians to document the pump and electrical connectors and contact Technical Assistance through a TAS case before diagnosing or repairing the vehicle. The Tech Tip does not extend the condition to 2018-2021 Camry vehicles and does not identify a replacement pump, gasket, coolant, or universal repair.
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View P26CA across all makes →Frequently Asked Questions
What does P26CA mean on Toyota?▼
P26CA stands for "Engine Coolant Pump Control Circuit Malfunction." The ECM calculates required coolant flow from engine coolant temperature, engine speed, and vehicle speed, then commands the electric engine water pump accordingly and monitors its feedback. P26CA sets when that control circuit or feedback is wrong. Toyota's Tech Tip T-TT-0733-23 identifies the two sub-codes seen on A25A engines: P26CA14 'Engine Coolant Pump Circuit Short to Ground or Open' and P26CA31 'Engine Coolant Pump No Signal' (P26CA12 is short to battery). On A25A-FKS/FXS engines these codes commonly accompany a physical coolant leak from the water pump itself. On Toyota specifically, this code is documented across 1 model.
What causes P26CA on Toyota vehicles?▼
Common causes on Toyota: Electric engine water pump internal failure, Coolant leaking from the water pump into the pump's electronics/connector, Open, short-to-ground, or short-to-battery in the water pump control circuit wiring, Corroded or water-intruded water pump connector, Blown fuse or ECM driver fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P26CA on a Toyota?▼
Repair costs vary widely depending on the root cause and specific Toyota model.
Which Toyota models have P26CA documented?▼
Au7o has documented P26CA on 1 Toyota model: Camry.