Can someone explain to me how exactly a CEL code is "cleared" on a car, and what is the effect on the ECM and behavior of the car ?
I've had the CEL cleared two times already, and every time, the car became completely powerless for a few miles (almost like the Limp Mode) right after the procedure. Then after a few days/week the power was restored progressively.
Last time I took the car a few minutes after they cleared it, and the first acceleration was like no power at all (pedal on the metal and the car almost not moving). I immediately went for a U-turn to drive back to the dealership, but on the way back, engine power increased a little, mid-turn, enough to make the wheels spin on a wet road. So I decided to drive a little more and now the car is kinda improved a little bit. Clearly less power than when it was new.
Can a CEL-clear restart the 100km (or was it 100 miles?) learning period ? or is the car still in pseudo-limp mode ???
I've seen people describing the same thing after a CEL reflash or upgrade, but was wondering why both would have the same impact on the car ?
Maybe the temporary loss of power has nothing to do with the change of software in the ECM, but with the procedure that they have to do that is similar between clearing a code and reflashing the whole thing ?
Maybe some people did not experience power loss because the dealer took the car for a spin and put a few dozens of miles on it before sending it back ?
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