Engine Fault Service Now Ford Explorer

By Nick Marchenko, PhD

Updated: November 20, 2023

Curious about the significance of the "Engine Fault Service Now" message illuminating on your Ford Explorer dashboard? If this warning has left you uncertain about its implications and the necessary actions, you are not alone. For most drivers, encountering this message can be disconcerting.

In this article, we aim to clarify the meaning behind the "Engine Fault Service Now" message and provide guidance on what steps to take when confronted with it.`

We will delve into the common triggers of engine faults, highlight warning signs to be mindful of, and offer insights on diagnosing the issue.

Additionally, we will address specific concerns related to Ford vehicles, offering effective solutions and repairs to ensure a swift return to the road.

Understanding Engine Fault Service Now

Encountering the "Engine Fault Service Now" message on your car's information display demands prompt attention and understanding. This warning signals an issue with your engine that, if ignored, could lead to more severe and costly problems.

The message may stem from various engine issues, such as faulty sensors, low oil pressure, a misfiring engine, or a damaged catalytic converter. While some problems may be minor and easily fixable, others could necessitate significant repairs.

Upon seeing the warning, refer to your Ford Explorer owner's manual for specific instructions tailored to your make and model. If the manual lacks guidance, it is advisable to promptly consult a trusted mechanic.

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A qualified mechanic will utilize diagnostic tools to read your car's computer codes, pinpointing the cause of the warning. Following this analysis, they will provide a diagnosis and recommend the necessary repairs.

To sum up, the "Engine Fault Service Now" message indicates a crucial issue with your car's engine. Never disregard this warning; instead, take immediate action by consulting your car's owner's manual or seeking the expertise of a trusted mechanic.

What Are the Top Issues That Could Cause the "Engine Fault Service Now"?

An Engine Misfires

Engine misfires often result from issues with the spark plugs, crucial components in the combustion process. These plugs ignite the gas and air mixture within the piston cylinder.

When spark plugs malfunction, the fuel fails to ignite, causing difficulties for other cylinders in the combustion system.

Addressing a worn-out spark plug involves the mechanic removing the old one and installing a new replacement. Spark plug costs vary, with an average ranging from $16 to $100 for a set of two.

The addition of labor costs, around $250 for removal and replacement, contributes to the total expense.

An Issue with the Oxygen Sensor

Malfunctions with the oxygen sensor occur when internal sensors relay inaccurate oxygen levels in the combustion chamber to the vehicle's computer.

The combustion chamber combines air and gasoline fumes, igniting them to produce fuel for the engine. Overheating incidents, among other factors, can age or damage these sensors.

Damaged sensors lead to inaccurate oxygen readings, prompting the vehicle's computer to add excessive air to the combustion chamber. Consequently, the gasoline-oxygen mixture becomes imbalanced.

To rectify oxygen sensor issues, replacement is necessary. The typical cost for this replacement, encompassing both parts and labor, can reach up to $500.

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The Catalytic Converter Malfunctions

Catalytic converter malfunctions can significantly impact engine performance. This vital component plays a crucial role in reducing the pollutants emitted by a vehicle.

While all vehicle engines produce emissions, the addition of a catalytic converter minimizes the toxicity of these emissions. Signs of a malfunctioning catalytic converter include a distinct rotten egg smell emanating from the engine.

In 2022, catalytic converters are experiencing shortages due to theft, making repairs a preferable option over replacement. Repairing a catalytic converter averages around $1,500, while replacement costs can escalate to as much as $2,500.

Corroding Lug Nuts

Corroded lug nuts are a common issue in Ford vehicles, often making them challenging to remove. Even without swelling, lug nuts secure the wheels to the engine's body, and moisture intrusion can lead to swelling and corrosion.

When lug nuts swell, removal becomes impossible, requiring replacement by a mechanic. The cost for replacing a lug nut typically stays affordable, not exceeding $100 for both parts and labor.

For Ford vehicles equipped with an EcoBoost engine, potential problems may arise with the fuel injector, responsible for compressing fuel into a mist for ignition.

A failing fuel injector can cause misfires, weak engine performance, and a noticeable smell of burning fuel after running for a few minutes.

Cleaning a clogged fuel injector is a straightforward task that can be done with a fuel injector cleaning kit and following the provided instructions, typically taking one to two hours.

How to Diagnose Engine Fault

If the "Engine Fault Service Now" message appears on your Ford Explorer dashboard, swift action is crucial to prevent further issues and expensive repairs.

In this segment, we will explore methods to diagnose engine faults using a diagnostic tool, checking for leaks, and inspecting the fuse box.

How to Diagnose an Engine Problem

Using a Diagnostic Tool

Employing a diagnostic tool is an efficient way to identify engine faults. These tools read error codes from the car's computer system. Connect the diagnostic tool to the car's OBD-II port, typically located under the dashboard, to display error codes for issue identification.

Checking for Leaks

Engine leaks can lead to various problems, including engine failure. Inspect the engine for oil or coolant stains to identify leaks. If leaks are found, promptly consult a mechanic to identify and fix the source before it causes more significant issues.

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Inspecting the Fuse Box

The fuse box is integral to the Ford electrical system, and a blown fuse can trigger the "Engine Fault Service Now" message. Check the fuse box for blown fuses and replace them with new ones of the same rating.

By utilizing a diagnostic tool, checking for leaks, and inspecting the fuse box, you can efficiently diagnose engine faults. If uncertain, seek a mechanic's expertise for issue identification and resolution.

Effective Solutions and Repairs

Regular Maintenance

Adhering to the manufacturer's recommended maintenance schedule, including oil changes, filter replacements, and coolant flushes, is crucial for preventing engine problems.

Filter Replacements

Regularly replace air filters, fuel filters, and oil filters to prevent engine issues caused by clogs from dirt and debris.

Oil Changes

Regular oil changes are vital to prevent wear and tear on engine components. Follow the manufacturer's recommended oil change schedule, using the appropriate oil type.

Fixing Fault Codes

If the "Engine Fault Service Now" message appears, fault codes have likely been triggered. Use a diagnostic tool to identify issues, and a qualified mechanic can perform necessary repairs.

In conclusion, prompt attention to engine problems is vital for maintaining your Ford Explorer's engine health. Following the manufacturer's maintenance schedule, regularly replacing filters, timely oil changes, and addressing fault codes promptly can prevent engine issues and ensure smooth vehicle operation.