Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part that helps control how hot gases move around, and it's stuck in the wrong position. This can make your car not run as well.
The Exhaust Gas Recirculation (EGR) system helps reduce emissions by recirculating a portion of the exhaust gases back into the engine cylinders. The EGR cooler bypass control helps direct these gases either through a cooler or bypass it. If it's stuck closed, it can cause issues with engine performance and emissions.
The P26FC code indicates that the EGR cooler bypass valve on Bank 2 is stuck in the closed position. This valve is responsible for directing exhaust gases either through the EGR cooler or bypassing it. When the valve is stuck closed, it can cause excessive exhaust gas temperatures, leading to engine performance issues and increased emissions.
• Check Engine Light is on
• Reduced engine performance
• Increased emissions
• Faulty EGR cooler bypass valve
• Wiring issues or poor electrical connections
• Carbon buildup causing the valve to stick
EGR: Exhaust Gas Recirculation
Bypass Valve: A valve that directs flow around a specific component
• Use an OBD-II scanner to confirm the code
• Inspect the EGR cooler bypass valve for signs of damage or carbon buildup
• Check the wiring and connectors for any issues
• Clean or replace the EGR cooler bypass valve
• Repair or replace any damaged wiring or connectors
• Clear the code and test drive to ensure the issue is resolved
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram 1500
• Regular maintenance and inspection of the EGR system
• Use quality fuel to reduce carbon buildup
• Ensure timely servicing of the vehicle
Engine Performance
• Address the issue promptly to avoid further engine damage
• Consult a professional mechanic if unsure about the repair
Repairs may be covered under the vehicle's emissions warranty. Check with the manufacturer.
The P26FC code has been more commonly reported in vehicles with higher mileage and those not regularly maintained.
Moderate – While the vehicle may still be drivable, it is recommended to address the issue soon to prevent further damage.
Ignoring this code may lead to increased emissions, which can be illegal in some areas with strict emissions regulations.
• Engine at normal operating temperature
• Vehicle running at idle
The EGR cooler bypass valve is typically located near the engine, close to the exhaust manifold on Bank 2.
Q: Can I drive with a P26FC code?
A: While it's possible to drive with this code, it's not recommended as it can lead to increased emissions and engine performance issues.
Q: How can I prevent this issue?
A: Regular maintenance and using quality fuel can help prevent carbon buildup, which is a common cause of this issue.
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.