Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's engine has a pump that helps keep it cool. This code means that the pump isn't working properly, like it's stuck and not moving water around to cool the engine.
The engine coolant pump is responsible for circulating coolant through the engine to maintain optimal operating temperature. If the pump is stuck or not performing, it can cause the engine to overheat.
The P26CB code indicates that the engine control module (ECM) has detected a malfunction in the engine coolant pump's operation. This could be due to the pump being stuck in the 'off' position, failing to circulate coolant effectively, which can lead to overheating and engine damage.
• Engine overheating
• Coolant leak
• Check engine light illuminated
• Faulty engine coolant pump
• Electrical issue in the pump circuit
• Blocked or clogged coolant passages
ECM: Engine Control Module
Coolant: A fluid used in engines to maintain proper temperature
• Check for any coolant leaks or blockages.
• Inspect the coolant pump and its electrical connections.
• Test the pump for proper operation.
• Replace the engine coolant pump if faulty.
• Repair or replace damaged wiring or connectors.
• Flush the cooling system to clear blockages.
• OBD-II scanner
• Multimeter
• Coolant system pressure tester
$200 - $600
Moderate
• Ford Focus
• Chevrolet Malibu
• Toyota Camry
• Regularly check coolant levels.
• Perform routine cooling system maintenance.
• Inspect and replace coolant hoses as needed.
Engine Performance
• Do not drive the vehicle if it is overheating.
• Have the cooling system inspected by a professional.
Check with the vehicle manufacturer for warranty coverage on the cooling system components.
This code has been more common in vehicles with electric coolant pumps, especially as manufacturers shift to more efficient cooling systems.
High – Driving with an overheating engine can cause severe damage.
Operating a vehicle with an overheating engine can lead to safety hazards and is not recommended.
• Engine at operating temperature
• Coolant system pressurized
The engine coolant pump is typically located at the front of the engine, driven by the serpentine belt or electrically powered.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to engine overheating and severe engine damage.
Q: Can I drive my car with this code?
A: It's not recommended to drive the car if the engine is overheating, as it can cause further damage.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.