OutdoorWire News

OutdoorWire

OutdoorWire

Portal page for OutdoorWire Access and Landuse Central Read More
4x4Voice

4x4Voice

California OHV recreation news and information Read More
MUIRNet News

MUIRNet News

News and information about outdoor recreation Read More
4x4Wire

4x4Wire

Off road recreation and news and information Read More
TrailTalk 
Forums

TrailTalk Forums

4x4Wire TrailTalk Forums for 4x4 tech information Read More
  • 1

Recreation Advocate

The OutdoorWire family websites feature news and information affecting outdoor recreation opportunities and access to public lands. 

4x4Wire Tech Hint: "Check Engine" Light

"Check Engine" Light

Vehicles manufactured since 1974 began sporting a variety of engine and emission control systems.  As the engine control and monitoring systems became more complex, on-board diagnostic systems were developed to record fault codes and assist in problem diagnosis.

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 or scanner.  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 vehicles provide an option to display the codes without a scanner.  

To view the error codes, start with the engine turned off (Ignition Key in the OFF position).  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, trouble codes should begin flashing on the odometer display.  (NOTE: this process works with newer Jeep vehicles.  It may or may not work with out models.)

Once the error codes are recorded, interpretation will indicate the likely source of the fault.

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/
Renezeder Takes Unlimited 4 Wins at Lucas Oil Off-...
Professionals for Managed Recreation Formed
 

Comments

No comments made yet. Be the first to submit a comment
Already Registered? Login Here
Guest
Tuesday, 06 December 2016
If you'd like to register, please fill in the username, password and name fields.

Captcha Image

OutdoorWire Websites

OutdoorWire

OutdoorWire

Portal page for OutdoorWire Access and Landuse Central Read More
4x4Voice

4x4Voice

California OHV recreation news and information Read More
MUIRNet News

MUIRNet News

News and information about outdoor recreation Read More
4x4Wire

4x4Wire

Off road recreation and news and information Read More
TrailTalk 
Forums

TrailTalk Forums

4x4Wire TrailTalk Forums for 4x4 tech information Read More
  • 1

4x4Wire Tech Section

Jeep 4x4 Tech

Jeep 4x4 Tech

Jeep Tech from JeepWire Read More
Toyota 4x4 Tech

Toyota 4x4 Tech

Toyota Tech from 4x4Wire Read More
Mitsubishi 4x4 Tech

Mitsubishi 4x4 Tech

Mitsubishi Tech from 4x4Wire Read More
Isuzu 4x4 Tech

Isuzu 4x4 Tech

Isuzu Tech from 4x4Wire Read More
  • 1