Question about 1997 Volvo 960
First off you need to have the problem fixed that caused the check engine light to come on in the first place. Otherwise it will just come back on. If you have repaired the problem then try disconnecting the negative battery post for 10 minutes. If that does not reset the light then you will need to have it reset with an OBD2 scan tool.
Posted on Sep 01, 2010
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Posted on Jan 02, 2017
pull positive cable for atleast 10 min and should reset computer. if not i would talk to dealership mech. there should be a proccess you can do to reset. i know there is with chevy
Posted on Dec 30, 2008
Just because your Check Engine light came on doesn't mean there's something wrong at all. Various Mechanical functions are timed by the Manufacture to signify Servicing required.
Sometimes they're set at 50K miles or more, when the light starts going on, all you have to do is take it to an Authorized Service Shop and they Reset the timer. Most places won't even charge you for doing it unless they find something wrong.
Posted on Jan 26, 2009
SOURCE: check engine light volvo 960
Just take it to an auto zone or car parts store they will put it on a computer for free and tell you what is wrong. I hope this helps. Don't forget to rate my answer. thanks.
Posted on Feb 11, 2009
A code P0401 most likely means one or more of the following has happened:
* The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (tube), most likely carbon buildup
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum
In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
* Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve
Check it and send us your advance.
Posted on Mar 02, 2011
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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.
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.
the link below: -------
details will help.
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