Check engine light. WTH

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Nov 13, 2012 | 04:16 PM

FRENCHY75

Thread Starter

JK Newbie

Joined: Dec 2008

Posts: 25

Likes: 0

From: New Brunswick

Check engine light. WTH

My check engine light turns on when my gas tank goes
below half. When I fill up the tank it turns off after a while.
What could cure this issue?

Nov 13, 2012 | 04:32 PM

Rich6700

JK Freak

Joined: Jan 2012

Posts: 717

Likes: 2

From: Glenside Pa

Take it to the dealer you must have a leak. Are you seeing any gas stains on the ground under your Jeep?

Nov 13, 2012 | 04:40 PM

Dayman

JK Enthusiast

Joined: Mar 2011

Posts: 326

Likes: 1

From: Greenville, SC

You can also read the code with three quick turns to the aux pos, leave in the aux pos on last turn

Nov 13, 2012 | 04:45 PM

itasor

JK Enthusiast

Joined: Feb 2009

Posts: 480

Likes: 1

From: Oneida, NY

Not sure about on the JK specifically, but I know some vehicles only run some of the EVAP tests when the tank level drops down to around half or less. Sounds like this could be what's happening, but you should pull the code to confirm.

Nov 13, 2012 | 05:05 PM

mattyk

JK Enthusiast

Joined: Aug 2012

Posts: 439

Likes: 0

From: virginia beach, Va

Quote:

Originally Posted by Dayman

You can also read the code with three quick turns to the aux pos, leave in the aux pos on last turn

X2- this will give you your fault code. look it up online. actualy quadratec has alist of all the fault codes i believe and start troubleshooting from there.

good luck. sounds like you might be getting an evap related fault

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