I had my check engine light come in and I was told both catalytic's needed replaced and they had to order parts. OUCH!!! I love my caddi sooo it is what it is. I was coming home from work and noticed the light is off, It is still off. You know it just makes a person go HMMM. Any explanations?
Check engine light catalytic issues
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I strongly suggest that you have the car scanned at a local parts store. Google a list of OBD-II Diagnostic Trouble Codes and their definitions.
Get out to the boonies and run the dog snot out of the car - cats clog up with lazy driving habits.
Please update your profile to look like other members' login banners - it sure helps to know what we're diagnosing.
Get out to the boonies and run the dog snot out of the car - cats clog up with lazy driving habits.
Please update your profile to look like other members' login banners - it sure helps to know what we're diagnosing.
do I just upload a photo to my profile?
What are the specifics on the car? year, mileage, etc. The down stream oxygen sensors monitor the catalytic converters, when things are working normally they generally deliver a pretty steady value around .700 mV +/-. This can be observed on the average scan tool. When the downstream oxygen sensor voltage starts to vary widely in a similar fashion to the upstream sensor, that's an indication the converter has about had it. I would make sure the codes point to both converters in case the recommendation is to replace them in pairs although only one has failed. They're not like shocks. Depending on the mileage, you may want to look at oxygen sensors also, sometimes they cause false converter codes.
I recently purchased a 2010 CTS 3.6 luxury with 68,000 miles on it. They told me that they needed to replace the 02 sensors also. It just seemed strange to me that after the Check Engine Light being on for many many days it suddenly goes off. Since I have had it the car runs much much better I think cheap gas and it sat for a while didn't help the car I do have a heavy foot use to drive a 2005 mustang gt. This 6 cylinder is getting better performance the more I drive it. I do think I will take it out this weekend and do some driving and blow it out.
Recommended O2 sensors also, sounds like both barrels of the proverbial "Shot gun" approach to me. Submariner suggested you put your foot in it, sounds like a real good idea.
Had code Po430 come up off to mechanic biting the bullet replacing both catalytic converters and o2 sensors. Also found used car place only had 2 of 4 tire sensors. Replacing the 2 cheap rubber valve stems. Thanks for the help
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