If the Check Engine light is out, the problem lies within the instrument cluster itself. This could be due to:
* A blown fuse: Check your owner's manual for the fuse location and rating for the instrument panel.
* A faulty instrument cluster: This is the most likely culprit. Repair or replacement of the instrument cluster is usually required. This is a more complex repair often best left to a qualified mechanic.
* A problem with the wiring: A break or short in the wiring between the engine control module (ECM) and the instrument cluster could also cause the light to fail. This is also a more advanced repair requiring diagnostic tools.
Instead of trying to replace a non-existent bulb, focus on diagnosing why the Check Engine light isn't working. If the light is *on*, that indicates a problem that needs attention and is separate from a faulty light. If it's *off* and you suspect a problem, a mechanic can troubleshoot the instrument cluster or wiring using a scan tool. Trying to fix this yourself without experience could lead to further damage.