Question about 2005 Hyundai Sonata
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Posted on Jan 02, 2017
Whenever the 'CHECK ENGINE' (Service Engine Soon) light comes on, the ECU (Engine Control Unit) sets a Diagnostic Trouble Code (DTC). These codes identify the particular engine management system which caused the light to come on.
You'll need to use/find an OBDII (On-Board Diagnostic) Scanner to retrieve any code which have been stored in the ECU computer. Afterward, we might be able to help you DIAGNOSE the problem and perhaps eventually fix the problem.
Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.Take/Tow your vehicle to an authorized Hyundai dealership and pay the diagnostic fee... they will tell you exactly what the problem is and the cost of parts/labor to fix it... at least this way you'll know what the problem is and what's required to fix it.
Posted on Oct 04, 2009
activate the anti theft,with doors shut and locked,and the hood and trunk,wait about 1 minute,then disarm the anti theft,and try and start,see what happens,also,do not disconnect the battery,the computer can loose it`s memory.
Posted on Apr 05, 2010
Engine Light 'ON' is a warning light from the inbuilt system. As far as your car is driving good, no need o worry about the light.
This is from the electronic control unit signal. This can occur due to some sensor performance present in the engine. Take it to the nearest dealer. They have a diaganosis unit to fix it easy.
Posted on Jun 06, 2010
Ok, with the battery, oil etc lights are governed by simple circuits, and therfore, as soon as they receive power, and earth, they turn off right away.
With the other lights, the malfunction and EPS lights, these go through a self-test function where they check a number of sensors, not just one, and they do this very quickly......the malfunction light checks out 20-35 different sensors, and in less than 1-2 seconds, thats fast.........
However, if they STAY on, then this is where it detects a problem and you should come back and see us again.
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Posted on Jul 14, 2010
SOURCE: the check engine light came
The check engine light is still on because the code hasen't been cleared/erased (or, an insufficient number of 'key' cycles hasn't occurred yet. Let me know the code, & I'll get back to you.
Posted on Feb 08, 2011
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