The service engine light is on. How do I reset? There are no error codes present

Service engine soon ? Do you mean SERVICE VEHICLE SOON Indicator
The amber SERVICE VEHICLE SOON indicator is an alert to the driver whenever there are specific current codes stored in the BCM or in the event of a loss of Class 2 serial data.

If your vehicle has a check engine light ,it doesn't have service engine soon .One or the other .

Is the check engine light on ? Any DTC'S - diagnostic trouble codes stored ? If any of these are true , light on or code's stored monitors will not set . Too set all monitors you do a drive cycle . A very specific way of driving your vehicle .

http://www.lyberty.com/car/drive-cycle.html

Hi Lucille Spanner light, Some cars it is used as a service reminder but on yours I suspect it could be an emission fault which has occurred and engine light has come on and gone off but spanner light has remained on. Either way I would advise taking it to a dealer or purchase an engine code reader. I think you might find an engine fault code present or in history. A dealer would be a better bet because if it is due to a service reminder they could reset it as a general code reader can not reset this. If its due to a fault code they would be able to diagnose the fault and clear the code. Good luck

Get a code reader for obd and see what the error code is.

The "Service Engine Soon" comes on when the ECM receives information from the engines sensors that exceeds normal acceptable operating parameters. The ECM will store a code (or codes) indicating which system(s) are out of tolerance and light the "Service Engine Soon" lamp. The technician will read the codes, diagnose and repair the condition(s), and reset the "Service Engine Soon" lamp. The lamp does NOT go out on its own (in most cases), once repairs are made. There is a scan tool that is used to clear the stored codes that allows the lamp to go out. It is therefore possible that you may already have fixed the condition that set your light to on. Or not. The whole purpose of the lamp was to help avoid the kind of "hit and miss" repair methodology that you have employed so far. Many feel the need to try this as they fear the costs of a professional mechanic reading the codes and the cost of repairs. Fortunately, there are less costly options available. Many of the large auto parts chains will read the "Service Engine Soon" codes for you at no cost. They will tell you what codes are present and you can decide if you (or someone you know) can perform repairs or if you need a pro to check things out. They do NOT, normally, perform resets of the lamp as this has potential liability issues for them. If you need the lamp reset after repairs are made, you have two options; pay the pro, or buy a scan tool that has the ability to reset the light. Not all do. The cheaper units are only code READERS. Be careful when you buy. But if you watch for sales, you can usually get a low-cost scan tools that can read and reset codes for around $40.00. Good luck.

Disconnect the negative battery cable for 30 minutes. Reconnect after and the code will clear. However if the problem persists, the code will come back with in 20 miles or 30 minutes.

#1 Always be suspicious of dealerships , they are in the business of doing repairs that are not necessarry.
#2 Loose intake hose "could" cause the problem , but only if the loose hose was after the mass air flow meter.
#3 most likely problem with your vehicle is a faulty oxygen sensor in the exhaust system , but could be as simple as a loose gas cap. Get somebody to scan the car for codes , some parts stores will do it for free. That will tell you what the error actually is.
#4 sometimes codes will reset if the problem is no longer present , sometimes not. On most vehicles , you can reset fault codes by simply disconecting the battery for a few minutes. If you do this and the light is then off , but comes on again after a few minutes , or even a few days , then there is a problem that needs to be repaired.

Check engine light comes on and off, these are indication that there is some error code stored in your vehicles ECM. The engine module computer needs to be scanned. These will give the code and as per the error code the further problem can be detected and confirmed. The engine light indicator blinks or remains steady on dash when engine computer noticed any problem with any engine electrically operated components.

For more help, I suggest you to refer the help links provided below. These will let you know more about which areas to look, check, when there is engine light coming up on dash panel.

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Click the link below: -------

Check Engine Light Reset Procedure?

http://whoisbyme.blogspot.in/2012/06/check-engine-light-reset-procedure.html

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Check Engine Light ON?

http://whoisbyme.blogspot.in/2012/06/check-engine-light-on.html

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Intermittent Check Engine Light?

http://whoisbyme.blogspot.in/2012/06/intermittent-check-engine-light.html

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WHY Check Engine Light On car?

http://schematicsdiagram.blogspot.com/2011/06/check-engine-light-on-car.html

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Check Engine Light, VSC light and Traction Control Light ON?

http://whoisbyme.blogspot.com/2012/06/check-engine-lightvsc-light-and.html

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Check engine light flashing?

http://technoanswers.blogspot.in/2012/02/check-engine-light-flashing.html

Service engine soon Light Turned OFF after Jump Start?

http://whatisbyme.blogspot.in/2012/06/service-engine-soon-light-turned-off.html

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After replacing throttle body the Check engine light starts blinking?

http://technoanswers.blogspot.com/2012/01/after-replacing-throttle-body-check.html

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2005 Chevy Impala: Service Vehicle Soon Warning Light?

http://whoisbyme.blogspot.in/2012/06/2005-chevy-impala-service-vehicle-soon.html

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Malfunction Indicator Light ON

http://whoisbyme.blogspot.in/2012/06/malfunction-indicator-light-on.html

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Check power-train message with orange engine light came on?

http://howtobyme.blogspot.in/2012/02/check-power-train-message-with-orange.html

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2007 Toyota Highlander Hybrid: Yellow Check Engine Light ON dash?

http://whatisbyme.blogspot.in/2012/05/2007-toyota-highlander-hybrid-yellow.html

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1999 Toyota Tacoma: Check Engine Light Read Code P0171?

http://whatisbyme.blogspot.in/2012/05/1999-toyota-tacoma-check-engine-light.html

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Car Runs Fine But Check Engine light is ON?

http://whatisbyme.blogspot.in/2012/05/car-runs-fine-but-check-engine-light-is.html

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Check engine light with codes P2195 and P2197?

http://howtobyme.blogspot.in/2012/01/check-engine-light-with-codes-p2195-and.html

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How to Read Codes from Check Engine Light?

http://schematicsdiagram.blogspot.com/2011/12/how-to-read-codes-from-check-engine.html

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Vehicle smog test failed Due to NO MIL/check engine light?

http://schematicsdiagram.blogspot.com/2011/12/vehicle-smog-test-failed-due-to-no.html

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OBD Code is cleared but check engine light will not RESET?

http://schematicsdiagram.blogspot.in/2012/02/obd-code-is-cleared-but-check-engine.html

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Car jerks while going uphill and Check engine light is ON?

http://schematicsdiagram.blogspot.com/2011/12/car-jerks-while-going-uphill-and-check.html

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Toyota Camry Check engine light flashes while driving?

http://schematicsdiagram.blogspot.in/2012/02/toyota-camry-check-engine-light-flashes.html

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These details will help.

Thanks.

Your mechanic may have forgotten to reset the light. Also if the time for service light is your check engine light a fault code may be stored in the vehicles on board computer. Have the codes pulled to determine if a fault code is present or not. If there are non you can have the light reset, however if there is a fault code and you just reset it the light will keep coming on until the problem is corrected.

Go to an autozone they can read the codes and reset the light. They do this as a free service. If there is a problem and you dont repair it the light will return. Sometimes the light can come on for no apparent reason (no code present) a loose gas cap can trigger the check engine light.