Originally Posted by faisalmali
Isn't he talking about the Check Gauges light rather Check Engine light? I thought the Check Gauges light was supposed to tell you about stuff like low fuel, etc.
The check gauges light will tell you any time the PCM sees something it'* been told is bad etc. to draw your attention to the gauge and see the problem Since there is no apparent problem according to the gauge and most of our sensors for the gauges are independent of the PCM sensors, a pcm sensor could have gone bad. Scanning should tell which sensor the pcm is setting the check gauges light for.
There are other reasons that it might set as well. Say the alternator on an SSEi... instead of an volt gauge the SSEi gets the boost gauge in it'* place.