Proud Owner Blues

[kzczp0]

Am proud owner of 2002 GLE w/ 67,000 miles for the past 5 days. But engine light just went on and I am not auto technical. Any help with what to check first (besides gas cap) that I can do before taking in to be checked?

Thanks

[maxhopper]

Welcome to NICO.

Take it to your local Autozone or Advance Auto, they will check your codes for free.

[SVTCOBRA]

same thing happened to me. Just bought my daughter a 2000 SE and a couple of weeks later the light came on. Went to Autozone and they pulled the codes. Was a dead coil pack. I replaced it, and they reset the light. How is your car running??? With the dead coil, mine was skipping badly as you can image.

[kzczp0]

runs fine and i just pulled the codes-is 0138 o2 sensor. what i read is that both rear sensors should be replace first. kinda costly-the dealer must of reset the ecm before i bought the car

[NutriaforBreakfast]

Is your car running ok? If so, you might want to see if thecodes come back after you clear them.

I have had this happen on my 1995. I have a code readerand have cleared that and they haven't come back. I passedfine on my inspection and had pleny of room for varianceson pollution particulates, C02 etc.

Doing it this way allowed me to determine if this was just a "fluke" warning or whether the O2 sensors really need a changeout.

I think these O2 sensors have too much to contend with being inthe exhaust, under the car, etc and give a lot of false readings.

If your car is up for inspection you NEED to clear these codes beforegoing in. I recommend an Actron code reader that will clear codes too(about 60$)