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Thanks a lot for your help Doctor J, your reply was very relevant but I forgot to precise that I have a manual transmission.
Here is what I've found on code 42:
(M/T)
No pulse is input from the speed sensor (SP1) bult into the meter during input of a 4-pulse signal from the vehicle speed sensor (SP2) on the transmission
I also understand that there is 4 ABS speed sensors located next to each wheels. Witch sensor should I check ? SP1, SP2...or the 4 ABS speed sensors. (As you can see I'm far from an expert !)
Another precision that might help the diagnostic... that check engine light goes on at 102km/h .... not at 100... not at 90, only when I accelerate from 100 to 102 !
Thanks in advance for anyone who has an idea to share !
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