Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Ford F-350 Super Duty?

• It indicates the vehicle’s onboard diagnostics detected an issue with emissions, engine, or drivetrain systems that needs verification.
• At Coggin Ford Jacksonville, our factory-trained technicians use Ford-specific scan tools to read codes and identify the root cause quickly and accurately.
• Choosing dealer service often costs less than independent shops when you consider correct diagnosis, OEM parts, and fewer repeat repairs—delivering both immediate and long-term savings.
• Any repairs covered under warranty must be completed at a certified dealership; we also offer service financing so you can get service now and pay later.
• Protect your truck and warranty: schedule service with Coggin Ford Jacksonville to get a precise diagnosis.

How long does a check engine light service take?

• Simple code reads and brief inspections commonly take 30–60 minutes; complex diagnostics and repairs require additional time for parts and verification testing.
• Coggin Ford Jacksonville focuses on fast, reliable turnaround using OEM parts and factory tools to reduce downtime and repeat visits.
• We provide transparent estimates and explain immediate and long-term savings from addressing the true cause rather than guessing at parts.
• Check current service specials to lower initial costs, and ask about our service financing to spread payments over time.
• To reserve your arrival time, schedule appointment online for faster check-in and priority service.

How much does a check engine light diagnostic cost for a 2018 Ford F-350 Super Duty?

• Diagnostics typically start around $75 depending on complexity; Coggin Ford Jacksonville often costs less than independent shops while delivering greater value through accurate diagnostics and OEM repairs.
• A proper diagnosis prevents costly downstream repairs—spending a small diagnostic fee now produces substantial long-term savings by avoiding unnecessary part replacements and protecting the engine and emissions systems.
• Warranty-covered repairs must be performed at a certified dealership to preserve coverage; we’ll document everything clearly for you.
• Ask about current service specials and our service financing so you can get the repairs you need now and pay later.
• For a precise estimate, schedule service with our service team at Coggin Ford Jacksonville.

What is the most common reason for check engine light on a 2018 Ford F-350 Super Duty?

• Common triggers include a loose or damaged gas cap, faulty oxygen sensors, EVAP system leaks (P0455), fuel trim issues (P0171), and misfires (P0300 family).
• Left unaddressed these issues reduce fuel economy, increase emissions, and can cause catalytic converter damage—often turning an inexpensive repair into a costly replacement.
• Our technicians use OEM diagnostics and parts to ensure repairs last, which saves you money over time and keeps towing and performance reliable.
• Warranty repairs must be done at a certified dealership; we also provide service financing so you can get essential repairs without delay.
• Don’t guess — schedule service or check current service specials to get started.

What is the first thing to check when the check engine light comes on?

• Begin with simple steps: ensure the gas cap is tight and check basic fluids—many warnings are caused by small items that are quick to fix.
• If the light remains, bring the 2018 Ford F-350 Super Duty to Coggin Ford Jacksonville for a proper Ford-specific scan and diagnosis to avoid unnecessary parts replacement.
• Dealer diagnostics identify exact trouble codes and required repairs, providing immediate and long-term savings through accurate fixes and OEM warranties.
• We provide transparent estimates, factory-trained technicians, OEM parts, and service financing so you can get service now and pay later.
• Ready to address it? schedule appointment or review our service specials.