Service engine light goes on with the A/C

2000ISUZUR

MEMBER
2000 ISUZU RODEO
2WD
AUTOMATIC
130,000 MILES

I have a 2000 isuzu rodeo v6 that has had the service engine light on. It has been to the shop & passed emissions but seems to turn on & off. Recently noticed after driving about a month that it comes on when the a/c is on or maybe when making a hard turn. Is there possibility of a hose leak setting a trip or it this something to do with the voltage going to the computer inside. Thanks in advace for your help of understanding.

1 Reply

WRENCHTECH

MECHANIC
20,757 POSTS

The "check engine" light is an indicator for a system that monitors many electronic functions in the system, also called the "malfunction indicator lamp" (MIL). It can come on for any of hundreds of different causes from any of the systems that the computer monitors. Some are very important and can lead to further component or engine damage and some are emissions related not as serious but still a problem and need to be repaired.

Your first step is to have the computer scanned to retrieve the trouble codes that were set when the check engine light came on. Those codes will give you specific information about what the computer saw and will get you pointed in the right direction to find your problem. With a 1996 or newer and some 95 cars and you have an AutoZone or Advanced auto parts in your area, they will read them for free. Once you have these code numbers, we can be a lot more specific about what your problem may be.