Originally Posted By: Trav
I do my own but you have to be careful with free scans at parts stores, many times the code does not get to the root of the problem and you can end up buying parts you don't need and in many cases are not returnable.
These monkeys see an O2 code and the next thing you know the guy is walking out with a new O2 as an example.
A good rule of thumb is use the info they give you as a starting point for further diagnosis, do not buy any parts based on their recommendation unless its clearly defective eg broken connector of burned.
I had a Nissan Z with $600 of new sensors in it when it was just a loose hose.
That is what I tell customers that walk in with codes. They all tell me I don't know what I am talking about and the AZ counter person said the insufficient EGR flow code needs an EGR valve and a DPFE doesn't exist.
I do my own but you have to be careful with free scans at parts stores, many times the code does not get to the root of the problem and you can end up buying parts you don't need and in many cases are not returnable.
These monkeys see an O2 code and the next thing you know the guy is walking out with a new O2 as an example.
A good rule of thumb is use the info they give you as a starting point for further diagnosis, do not buy any parts based on their recommendation unless its clearly defective eg broken connector of burned.
I had a Nissan Z with $600 of new sensors in it when it was just a loose hose.
That is what I tell customers that walk in with codes. They all tell me I don't know what I am talking about and the AZ counter person said the insufficient EGR flow code needs an EGR valve and a DPFE doesn't exist.