I have a 2004 650H LGP Dozer and I have a lot of codes showing up, I tried to look for it but was unable to find in the web 120F 144F 145F 109F 131F 121F Where can I find these codes?
Welcome to HEF Alan ! Where are you getting these? From the monitor? Transmission controller? Post a picture please. The format for codes on those machines are as follows. Transmission codes start with an F3, Engine codes with an F4 and monitor codes with an F9, all of which will be followed by 2 numbers or a combination of numbers/letters. What are the symptoms? Serial number?
Looks like it was a bad speed sensor, took a while to figure out, turns out my mecanic accidentally ready the temp. Guage. Instead of the fault code area