Question about 1999 Volvo S80
There are three ways to reset a check engine light.
1. Disconnect the battery, wait approximately 30 minutes, reconnect the battery. This resets the cars computer which also reset the check engine light. On newer OBD (on-board diagnostic) compliant vehicles this usually does not work. See step 2.
2. Reset using an OBD II reader. When you hook an OBD II code reader up to your vehicle, you can reset the computer using the code reader.
3. Fixing the problem. Generally the check engine light comes on for a reason. Usually it is emission related (sensors, gas cap) or electrical (faulty wiring). In this case the way to reset the check engine light is to fix the problem
Posted on Sep 24, 2010
I would take the car into a mechanic to have them see why the light is on. I have had this problem in the past and the mechanic should be able to tell you exactly what is wrong. The check engine light can come on for a lot of different reasons and I would want to be sure it isn't going to cause damage to your car. You may just have a broken sensor. http://www.americantransmissions.biz/Auto_Repair_Virginia_Beach_VA.html
Posted on Dec 09, 2014
dear friend-filling the tank has nothing to do with the engine light.in order to cancel this light,disconnect the battery and leave for a while.reconnect battery and check light,it should be of,if the same happen again take vehicle to a dealership for a diagnostic report.
Posted on Jul 29, 2009
SOURCE: engine check light is on
Any time you have a check light or any other lights. You have a possible system failure,and need to have it checked for a possible code,then diagnosed and repaired.
If you have inspection in your state,it will fail
Not to be hurtfull,but,these sort of lights have been on most all vehicles for 30 years.
There is no reason, anyone owning a vehicle, shouldn't have an owners manual,and be aware of the vehicles operation,as far as check lights.
This was brought about 30 years ago,in the US at least,as part of a program, to reduce exhaust emissions.
Posted on Oct 14, 2010
SOURCE: After starting car check engine
Diagnosis must begin with scanning your Engine Control Module to find out why it has turned the light on. The car may seem to be running OK, but there is probably a problem that is causing you to use excessive fuel and/or is threatening to destroy some high dollar parts like your catalytic converter.
Posted on Jan 11, 2011
Agreed with thundergod - I had a failed cam sensor on my Audi A4 that made no discernable difference in the car's operation, but changing it and resetting the light fixed the problem.
Posted on May 06, 2009
The pcm (powertrain control module ) is telling you it has a set code in the memory. Take the car to a parts place like (auto zone ) and have them to run a scam on the pcm for a trouble code. Once you have done that then you will be able to correct the problem. Hope this will help you.
Posted on May 27, 2010
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