Recreation Advocate

The OutdoorWire family websites feature news and information affecting outdoor recreation opportunities and access to public lands. 
1 minute reading time (291 words)

"Check Engine" Light

In general, all vehicles equipped with on-board diagnostic systems (OBD-II is the current standard) will store error codes that can be read using a portable code reader.  A "Check Engine" light comes on to indicate that the engine management computer has detected a problem related to emissions or engine operation.  It is your notice that something needs to be fixed in order to comply with federal emissions requirements or to keep your engine running.

Many of the trouble codes relate to engine or emission sensor inputs that have failed or are out of tolerance.  The sensors control the "engine management computer" and keep the engine running at optimum efficiency.  Failed or out of tolerance sensors mean your engine is not operating at optimum efficiency.

While it is easier to read the fault codes with a code reader/scanner, most vehicle provide an option to display the codes. 

To view the codes, start with the engine turned off.  Turn the ignition key to the "ON" (not "IGNITION/START") position, then turn it off for about a second.  Turn it on for a second, then turn it off for a second. The third time you turn it on, you should see a set of trouble codes flashing on the odometer display.  (NOTE: this process works with most newer Jeep vehicles.  It may or may not work with other models.)

Once the error codes are recorded, interpretation will indicate the likely source of the fault. Fixing the problem can be simple do-it-yourself (replace the gas cap) or more complex requiring the services of an auto repair shop.

Search the 4x4Wire.com archives for more information about check engine light posts about your 4x4 vehicle model.

For a comprehensive listing of ODB-II error codes for all manufactures vehicles, check these websites:

http://www.obd-codes.com/
http://www.engine-light-help.com/

Auto Glym Car Care Products
GPS to GIS - Map it or lose it
 

Comments

No comments made yet. Be the first to submit a comment
Guest
Wednesday, 23 October 2019
If you'd like to register, please fill in the username, password and name fields.

Captcha Image

4x4Wire.com

OutdoorWire, 4x4Wire, JeepWire, TrailTalk, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc. and MUIRNet Consulting. Copyright (c) 1999-2019 OutdoorWire, Inc and MUIRNet Consulting - All Rights Reserved, no part of this publication may be reproduced in any form without express written permission. You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material. All corporate trademarks are the property of their respective owners.

OutdoorWire, 4x4Wire, JeepWire, TrailTalk, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc. and MUIRNet Consulting. Copyright (c) 1999-2019 OutdoorWire, Inc and MUIRNet Consulting - All Rights Reserved, no part of this publication may be reproduced in any form without express written permission. You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material. All corporate trademarks are the property of their respective owners.