My primary question is there anyway i can tell if a mechanic messed with the service engine light bulb, or relay on the circuit board causing it to permanently turn off?
The reason i am asking is below:
Just bought a truck, in which the dealer said he just replaced an o2 sensor, so he said sometimes it causes another to go out. (not sure if thats true or if he knew the o2 sensor wasn't working) but that is beside the fact. He signed that they would repair the check engine light if it came on. On the way home from the dealer it came on. Got the codes ran and it was the o2 sensor. Took it back the next day and they "fixed" the problem. The check engine light wasn't on, BUT the check engine light was not on at all, as in when the key was turned to accessory mode it still did not show up. i noticed this when i got in the truck and also the steering wheel was at the lowest point as you would need to take out the instrument cluster, so i scanned codes again from 3 different locations and the o2 sensor code was still on. I took dash off to see if i could tell if they messed with the lights but i couldn't tell. I took it back and told them the problem, and then he said he called the mechanic and said it needed a cat and it would fix it. Then got it scanned again before taking it to get a cat installed and printed the codes out, one of which was the o2 sensor, and the other was a code involving the gauge cluster. Then i took it back to them and handed them the papers, and they told me to take it to the other mechanic because he does most of their expensive and high end work. So we took it their, and i am currently waiting on the call to whether it is fixed and what the problem was.
Again the main concern is that the check engine light will work again, and it will one way or another. but i just wanted to know if i could find out for certain they they messed with it and turned the service engine light off and tried to sneak it past as they fixed the problem.
The reason i am asking is below:
Just bought a truck, in which the dealer said he just replaced an o2 sensor, so he said sometimes it causes another to go out. (not sure if thats true or if he knew the o2 sensor wasn't working) but that is beside the fact. He signed that they would repair the check engine light if it came on. On the way home from the dealer it came on. Got the codes ran and it was the o2 sensor. Took it back the next day and they "fixed" the problem. The check engine light wasn't on, BUT the check engine light was not on at all, as in when the key was turned to accessory mode it still did not show up. i noticed this when i got in the truck and also the steering wheel was at the lowest point as you would need to take out the instrument cluster, so i scanned codes again from 3 different locations and the o2 sensor code was still on. I took dash off to see if i could tell if they messed with the lights but i couldn't tell. I took it back and told them the problem, and then he said he called the mechanic and said it needed a cat and it would fix it. Then got it scanned again before taking it to get a cat installed and printed the codes out, one of which was the o2 sensor, and the other was a code involving the gauge cluster. Then i took it back to them and handed them the papers, and they told me to take it to the other mechanic because he does most of their expensive and high end work. So we took it their, and i am currently waiting on the call to whether it is fixed and what the problem was.
Again the main concern is that the check engine light will work again, and it will one way or another. but i just wanted to know if i could find out for certain they they messed with it and turned the service engine light off and tried to sneak it past as they fixed the problem.
