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On board diagnostics (obd-ii), Maintenance and specifications – FORD 2010 F-550 v.2 User Manual

Page 380

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WARNING: Do not park, idle, or drive your vehicle in dry grass
or other dry ground cover. The emission system heats up the

engine compartment and exhaust system, which can start a fire.

Illumination of the service engine soon

indicator, charging system

warning light or the temperature warning light, fluid leaks, strange odors,
smoke or loss of engine power could indicate that the emission control
system is not working properly.

An improperly operating or damaged exhaust system may allow exhaust
to enter the vehicle. Have a damaged or improperly operating exhaust
system inspected and repaired immediately.

WARNING: Exhaust leaks may result in entry of harmful and
potentially lethal fumes into the passenger compartment.

Do not make any unauthorized changes to your vehicle or engine. By
law, vehicle owners and anyone who manufactures, repairs, services,
sells, leases, trades vehicles, or supervises a fleet of vehicles are not
permitted to intentionally remove an emission control device or prevent
it from working. Information about your vehicle’s emission system is on
the Vehicle Emission Control Information Decal located on or near the
engine. This decal also lists engine displacement.

Please consult your Warranty Guide/Customer Information Guide for
complete emission warranty information.

On board diagnostics (OBD-II)

Your vehicle is equipped with a computer that monitors the engine’s
emission control system. This system is commonly known as the On
Board Diagnostics System (OBD-II). The OBD-II system protects the
environment by ensuring that your vehicle continues to meet
government emission standards. The OBD-II system also assists your
authorized dealer in properly servicing your vehicle. When the service
engine soon

indicator illuminates, the OBD-II system has detected

a malfunction. Temporary malfunctions may cause the service engine
soon

indicator to illuminate. Examples are:

1. The vehicle has run out of fuel—the engine may misfire or run poorly.

2. Poor fuel quality or water in the fuel—the engine may misfire or run
poorly.

Maintenance and Specifications

380

2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA
(fus)

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