Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part of the car that helps keep the engine cool is spinning too fast or has air bubbles in it, which can cause problems.
The P26FA code is triggered when the Engine Control Module (ECM) detects that the coolant pump, specifically Pump C, is operating at a speed higher than expected or there is air trapped in the cooling system.
The coolant pump is responsible for circulating coolant throughout the engine to maintain optimal operating temperature. An overspeed condition or air in the system can lead to inefficient cooling, potentially causing the engine to overheat. The ECM monitors the speed of the pump and the presence of air in the system using various sensors. If the pump operates outside of its expected parameters, the ECM will set the P26FA code.
• Engine overheating
• Coolant leaks
• Check engine light illuminated
• Faulty coolant pump
• Air trapped in the cooling system
• Faulty coolant pump speed sensor
Coolant: A fluid that absorbs heat from the engine and dissipates it through the radiator.
ECM: Engine Control Module, the computer that controls engine functions.
• Check for coolant leaks and repair if necessary.
• Bleed the cooling system to remove any trapped air.
• Test the coolant pump and speed sensor for proper operation.
• Replace the coolant pump if it is faulty.
• Bleed the cooling system to remove air.
• Replace the speed sensor if it is malfunctioning.
• OBD-II scanner
• Coolant pressure tester
• Wrench set
$150 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check coolant levels.
• Perform routine maintenance on the cooling system.
• Inspect for leaks periodically.
Engine Performance
• Do not ignore the check engine light.
• Regularly check the coolant level and top up if necessary.
Check with your vehicle manufacturer; cooling system components may be covered under the powertrain warranty.
This code has been associated with issues in vehicles with electric coolant pumps, particularly in models with advanced cooling systems.
High – This issue can lead to engine overheating if not addressed promptly.
Driving with an overheating engine can cause severe damage and may void warranties.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The coolant pump is typically located at the front of the engine, near the serpentine belt.
Q: Can I drive with a P26FA code?
A: It's not recommended as it can lead to engine overheating.
Q: How do I know if there's air in my cooling system?
A: Symptoms include fluctuating temperature gauge readings and gurgling sounds from the radiator.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
View on Amazon
Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
View on Amazon
Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.