Well, I know this is an f-150 forum , but I thought you guys might be able to help . My fiance's 99 Isuzu amigo's check engine light went on. I had auto zone check it, and it pulled codes for low voltage on the o2 sensor and the camshaft position sensor. she said check the harnesses and cables to make sure they are connected properly. from what I can tell they are. The car runs fine. Any ideas?

It seems to me that if an 02 sensor or camshaft position sensor was bad, you would be able to feel it because the car would not run right. Any suggestions on how to fix this?

 

That system is sensitive to proper voltage. If the battery is not 100% or the charging system is not all there and you get it at or below 12V that might be the cause. Might need to check the condition of your ground also. Might have a loose one or some corrosion.