this country sucks and someone probably sued
Ok, this has me curious. More info on the logic behind this? I’ve always made my repair and then cleared the code. My logic being that if I didn’t fix it the code will come back and the light coming on will alert me of that immediately. By leaving it on you’re stuck driving around wondering if the light is still on because you haven’t done a full drive cycle yet or if you didn’t fix the problem.
The only advantage I see is that if you didn’t fix it you still have the code stored but how hard is it to write down the code before clearing it? Hell, chances are you wrote it down to go inside and research it on the internet anyway and you have a few favorites saved with info you found about that code for your specific vehicle.
Am I missing something? Hobbiest repair guy with no formal training just wondering why the pros suggest doing it this way.
Good question. I assume because when you clear the codes you will also clear the drive cycle monitors, history, freeze frame etc…all of which can be useful when dealing with a intermitant or difficult problem, don/jason (and a few others) may be able to give a better answer as i havent been on the pro repair side for a while
don’t think the comp only stores codes. The computer stores vehicle on board codes and stored data. which in difficult diags are big help.see sometimes you may have more then one problem.problems that don’t show up till after you have fixed certain problems.like operating condition for a egr is 35to 80%yours could be operating at 40 percent which the computer can’t pick up but your vehicle may have a driveability issue. This data stored will save you a lot of time. now you clear that stuff out the vehicle computer may not test that part till later in the drive cycle. So now you may diag the wrong problem
Good info guys. Guess I’ll change my proceedures.