Question about 2002 BMW Z3

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Yellow emission light has been on temporarily but is no longer illuminated. Is thus anything to worry about as I am due to sell it? It is a z3

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  • stevecraft70 Aug 03, 2010

    cheers - I don't want to sell a car with a problem. Cheers again

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No if the buyer does not go for diagnostics test before putting the cash, normally this emission light comes on when a "bad fuel" is put in or the air filter is dirty, but if it goes off by itself there is no problem

Posted on Aug 03, 2010

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Why does check engine light blink when I accelerate?


Hi Ced ,
The malfunction indicator lamp (MIL) is located in the instrument panel cluster. The MIL will display as either SERVICE ENGINE SOON or one of the following symbols when commanded ON:
Check engine ! The MIL indicates that an emissions related fault has occurred and vehicle service is required.
The following is a list of the modes of operation for the MIL:
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The MIL illuminates when the ignition is turned ON, with the engine OFF. This is a bulb test to ensure the MIL is able to illuminate.


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The MIL turns OFF after the engine is started if a diagnostic fault is not present.


?€¢
The MIL remains illuminated after the engine is started if the control module detects a fault. A diagnostic trouble code (DTC) is stored any time the control module illuminates the MIL due to an emissions related fault. The MIL turns OFF after three consecutive ignition cycles in which a Test Passed has been reported for the diagnostic test that originally caused the MIL to illuminate.


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The MIL flashes if the control module detects a misfire condition which could damage the catalytic converter.


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When the MIL is illuminated and the engine stalls, the MIL will remain illuminated as long as the ignition is ON.


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When the MIL is not illuminated and the engine stalls, the MIL will not illuminate until the ignition is cycled OFF and then ON.

Trip

Mar 13, 2015 | 2003 Chevrolet Impala

1 Answer

Yellow cog light on on my dash


it is reporting of a problem in the transmission that needs attention. run the fault codes and have the transmission serviced asap.

Jul 19, 2014 | 1999 BMW Z3

1 Answer

Engine light came on but don't really see anything wrong


The Check Engine Light will illuminate when there is a problem within the emissions system. To pinpoint what exactly the problem is you'll need to retrieve any DTC (Diagnostic Trouble
Codes) from the cars PCM (main computer) which requires a hand held reader that plugs into the car normally under the dash on the drivers side. You can take the vehicle to your local Autozone, O'reilly's or Pep Boys parts store (will do it for Free) or the dealer (which will cost you $) and have them plug read the codes for you. That will tell you what is going on with the emissions system. Also, have them clear the codes for you, that should turn off the check engine light temporarily.

Hope this helps, good luck.

Les

Oct 31, 2013 | 2011 Kia Sorento

1 Answer

Emission warnig light on


Check Engine Light
The fault codes are cleared after the problem has been rectified and the engine has been started 5-10 times.
Service Interval Reminder Lights
The on-board computer is used to evaluate mileage, average engine speed and engine and coolant temperatures as well as other computer input factors that determine maintenance intervals. There are 5 green, a yellow and a red LED used to remind the driver of oil changes and other maintenance services.
The green LED'S will be illuminated when the ignition is in the ON position and the engine OFF. There will not be as many green LED'S illuminated when the maintenance time gets closer. A yellow LED that is illuminated when the engine is running, will indicate maintenance is now due. The red LED will be illuminated when the service interval has been exceeded by approximately 1000 miles. This is the computers way of saying this is your last warning.
There is a service interval reset tool manufactured by the Assenmacher Tool Company (tool 62-1-100). This tool is used to reset BMW 6-cylinder and 4-cylinder vehicles with the aid of an additional adapter tool.
  1. Locate the diagnostic connector near the thermostat housing.
  2. Plug the special reset tool into the diagnostic connector and place the ignition switch in the ON position.
  3. Depress the reset button on the tool until all 5 green LED'S are illuminated, showing that the reset has completed.

Nov 12, 2012 | 2002 BMW 3 Series

1 Answer

What does check engine light mean


It means your vehicle's computer has determined that a component or system in your emission control system is not working properly.
When the light comes on, one or more diagnostic trouble codes (DTC) are stored in the engine control module. These DTCs remain even if the light goes out. To address a Check Engine Light problem, the DTCs are retrieved and the appropriate troubleshooting information is followed in order to determine the problem.
Every vehicle manufactured in the U.S. has to first pass an Environmental Protection Agency (EPA) test called the Federal Test Procedure. This sets the acceptable limits of wear and/or failure for the emission control system-i.e., what conditions will ultimately cause a Check Engine Light to illuminate. These standards are closely regulated. If the emission control system is faulty and the vehicle is polluting the air, the Check Engine Light illuminates to alert the driver of this condition. (Note: A vehicle in this condition would fail an emissions inspection or smog check.)
Don't confuse the Check Engine Light with the maintenance or service light. These lights illuminate when a routine service is due. They are usually triggered by mileage, gallons of gasoline consumed, or some other type of vehicle-use measurement.

Jan 01, 2011 | Toyota Tercel Cars & Trucks

1 Answer

2004 Dodge Ram P0420 code. What could be causing this? My emissions are clean (all were within limits), and I just replaced all 4 oxygen sensors


This code is set when the catalytic converters are operating below tolerable efficiency limits. Basically, your catalytic converters are bad and are in need of replacement. You can have bad converters and still pass emissions, but your computer uses the oxygen sensors to determine how well they are working. If the readings are out of a set tolerance, the check engine light will illuminate and DTC P0420 will set. Clearing the code will turn the light out temporarily, but the next time the test is run, the light will come on again.
Hope this helps.

Oct 20, 2010 | 2004 Dodge Ram 1500

1 Answer

I need a diagram of dash board lights e,g the oil, the battery and the other light, the yellow warning light with a picture of an engine with a fan on top and on the front. What does it mean when that...


that light means you have a problem with the emission system of the car ity could be anything from a loose gas cap to a failed sensor . As long as the light isnt flashing then you can drive the car untill you get it checked out. If the light is FLASHING then DONT DRIVE THE CAR.

Apr 12, 2009 | 1999 Honda Civic

2 Answers

Yellow emission engine light comes on


Is that P0442?, if so it may be due to a loose gas cap or leaking gas cap check valve.

Oct 15, 2008 | 2001 Chevrolet Cavalier

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