Jeep Check Engine Light. Some models include the liberty, grand cherokee, wrangler, compass, and patriot. How to read check engine light codes without a scanner jeep wrangler chrysler and dodge.
Sometimes the wrangler check engine light can illuminate after installing an aftermarket modification.
There are several hundreds of powertrain codes, but some are much more common than others. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. Here are the 10 most common problems that can trigger a check engine light. Turn the ignition key until the digital odometer displays, then turn it back to off.