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Service Engine Soon light came on

On my 2003 Ford Expedition the service engine soon light came on. What does this mean?

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This means it's time for a service..But have it diagnosed with a computer and maybe sometimes resetting it solves this problem.If the light comes back again then you need a servicing of the engine.

Posted on Jun 16, 2009

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Nooo its a loose wire connection under passenger seat just wiggle and it will dissapear ;)

Posted on Nov 23, 2011

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Posted on Jan 02, 2017

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SOURCE: 1998 Ford Expedition Eddie Bauer SERVICE ENGINE SOON light

Take the vehicle to any local auto parts store that will read the codes. WRITE THEM DOWN, and report back here for further help.

Posted on Dec 21, 2009

SOURCE: What's your problem?2004 ford expedition service engine soon light

I assume you resolved the issues by now

Check lights have been on all vehicles for 31 years,
so you shouldn't be asking about them

Does not matter what light comes on your dash

The procedure is always the same
Check for codes
Diagnose & repair code related issues first

Posted on Aug 30, 2012

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I have a 2001 mustang bullitt that is showing service engine light on. Took it to mechanic and he put 2 different machines on it to show code for problem. No codes coming up and he can't turn off the...


There is a diagnostic procedure in the factory service repair manual for engine light lit ,no codes . Did you take it to ford dealer ? MIL - is referring to check engine , service engine soon etc...
  • MIL always on when engine is running (no DTCs):
  • MIL circuits
  • For Focus, Mustang, Town Car, Continental, LS6/LS8, Escape, Windstar, F-150, Expedition and Navigator/Blackwood:
  • Instrument Cluster, Section 413-01 of the Workshop Manual.
  • All Others:
  • GO to NB1

SERVICE ENGINE SOON indicator After the engine is started, the SERVICE ENGINE SOON indicator will prove out for a duration of three seconds. If the instrument cluster does not receive a message from the PCM within five seconds, the instrument cluster will illuminate the SERVICE ENGINE SOON indicator and log a diagnostic trouble code (DTC).

  • An indicator is inoperative/always on - SERVICE ENGINE SOON
  • Circuitry.
  • Bulb.
  • Instrument cluster.
  • PCM.
  • GO to Pinpoint Test P .

PINPOINT TEST P: AN INDICATOR IS INOPERATIVE/ALWAYS ON - SERVICE ENGINE SOON CONDITIONS DETAILS/RESULTS/ACTIONS P1 CARRY OUT THE INSTRUMENT CLUSTER SERVICE ENGINE SOON INDICATOR ACTIVE COMMAND Trigger the HEC active command MIL.
  • Did the SERVICE ENGINE SOON indicator illuminate?
Yes REFER to Powertrain Control/Emissions Diagnosis (PC/ED) manual.

No INSTALL a new instrument cluster; REFER to Instrument Cluster . CLEAR the DTCs. REPEAT the self-test.

Jul 18, 2017 | 2001 Ford Mustang

2 Answers

What's your problem?2004 ford expedition service engine soon light


I assume you resolved the issues by now

Check lights have been on all vehicles for 31 years,
so you shouldn't be asking about them

Does not matter what light comes on your dash

The procedure is always the same
Check for codes
Diagnose & repair code related issues first

Aug 18, 2012 | 2004 Ford Expedition

1 Answer

Service engine light is on


The service engine soon light could be due to oxygen sensor(s) being bad or EGR module...

Nov 27, 2011 | 2003 Ford Expedition

1 Answer

2003 Ford Expedition - service engine soon light is on


Generally this turn on when have any problem with the emission sensors; to know excalty what fault code there, make one scanned the PCM in autozone or autoshop with OBD Codes Reader.

With this code number we could send aditional details.

Hope helps (remember to rate and comment this).

Sep 30, 2010 | 2003 Ford Expedition

1 Answer

What is the meaning of CHECK ENGINE ZONE for my ford expedetion 2003 v8 gasoline


http://www.ford.com/owner-services/customer-support/ask-ford-faqs?qtype=uq&inputtext=check+engine+zone

http://www.motorcraftservice.com/pubs/content/~WO3EXD/~MUS~LEN/41/03exdog5e.pdf

I checked the manual for 'CHECK ENGINE ZONE' and could find no reference to this for the 2003 Expedition.

There is a Service Engine Soon light though.

I looked all over the manual and could find no instrument cluster light to that effect.

Can you tell me what page refers to this?

Aug 03, 2010 | 2003 Ford Expedition

2 Answers

1998 Ford Expedition Eddie Bauer SERVICE ENGINE SOON light


Take the vehicle to any local auto parts store that will read the codes. WRITE THEM DOWN, and report back here for further help.

Dec 21, 2009 | 1998 Ford Expedition

1 Answer

SERVICE ENGINE SOON LIGHT IS ON


have it checked at a local auto parts store. most do it for free.

Oct 23, 2009 | 2003 Ford Expedition

1 Answer

Service engine light is on.can code be read by auto parts store? is there a check engine light and a service engine soon light?


Yes Autozone can check the codes for you for free.Both lights are on by design when there is a problem:)

Sep 06, 2009 | 2003 Ford Expedition

1 Answer

Service Engine Light staying On


Alot of times a voltage drop to the O2 Sensor can cause your check engine light to come on. Even tho the O2 sensor is wrong fine.

Feb 09, 2009 | 2003 Ford Expedition

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