First time using OBDII... the red light came on (not flashing) the EV was flashing.. Couldn't figure out how to continue for more possible codes? Mil was 01/03...
Hi there,
This basically means there is an issue with the internal mode switch on the transmission valve body.
P1825 CHEVROLET - Internal Mode Switch Invalid Range Read more: https://www.autocodes.com/p1825_chevrolet.html
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